/* ============================================================
   styles.css — Korean with Alexandre Lee — Design System
   ============================================================

   TABLE OF CONTENTS
   1. CSS Variables (Design Tokens)
   2. Reset & Base
   3. Typography
   4. Layout Utilities
   5. Buttons
   6. Forms
   7. Navbar
   8. Footer
   9. Toast Notifications
   10. Modal
   11. Badges & Tags
   12. Avatar
   13. Progress Bar
   14. Cards
   15. Testimonial Cards
   16. Pricing Cards
   17. Course Module & Lesson
   18. Landing Page Sections
   19. Auth Pages
   20. Dashboard
   21. Course Page
   22. Account Page
   23. Animations & Transitions
   24. Dark Mode Overrides
   25. Responsive Overrides
   ============================================================ */

/* ─────────────────────────────────────────────
   1. CSS VARIABLES (Design Tokens)
   ─────────────────────────────────────────────
   All colours are defined here; use variables everywhere so
   dark mode is a single overriding block at the end.
   ───────────────────────────────────────────── */
:root {
  /* Brand colours — Seoul Cafe palette */
  --color-primary:       #6AADCF;   /* Korean Sky blue */
  --color-primary-dark:  #4D91B8;
  --color-primary-light: #8EC5E0;
  --color-accent:        #E0846B;   /* Grapefruit coral */
  --color-accent-hover:  #D06E55;
  --color-accent-muted:  #F5D0C5;
  --color-gold:          #9B7B5B;   /* Hazelnut brown */

  /* Neutrals — warm ivory cafe base */
  --color-bg:            #FBF8F1;   /* Warm ivory */
  --color-bg-alt:        #F5EFE4;   /* Warm sand tint */
  --color-surface:       #ffffff;
  --color-surface-raised:#FEFCF8;   /* Very slightly warm white */
  --color-border:        #E5DDD2;   /* Almond border */
  --color-border-light:  #F0EAE0;   /* Light warm border */

  /* Text */
  --color-text:          #2C2420;   /* Near black, warm */
  --color-text-muted:    #6E6259;   /* Stone */
  --color-text-subtle:   #9B9088;
  --color-text-inverse:  #ffffff;

  /* Brown accent */
  --color-brown:         #9B7B5B;   /* Hazelnut */
  --color-brown-light:   #C4A882;
  --color-brown-dark:    #7A5F43;

  /* Semantic colours */
  --color-success:       #10b981;
  --color-success-light: #d1fae5;
  --color-warning:       #f59e0b;
  --color-warning-light: #fef3c7;
  --color-error:         #ef4444;
  --color-error-light:   #fee2e2;
  --color-info:          #3b82f6;
  --color-info-light:    #dbeafe;

  /* Locked / premium */
  --color-locked:        #94a3b8;
  --color-locked-bg:     #f1f5f9;

  /* Shadows */
  --shadow-xs:   0 1px 2px rgba(0,0,0,0.06);
  --shadow-sm:   0 2px 6px rgba(0,0,0,0.08);
  --shadow-md:   0 4px 16px rgba(0,0,0,0.10);
  --shadow-lg:   0 8px 32px rgba(0,0,0,0.12);
  --shadow-xl:   0 16px 48px rgba(0,0,0,0.15);

  /* Border radius */
  --radius-xs:   4px;
  --radius-sm:   8px;
  --radius-md:   12px;
  --radius-lg:   20px;
  --radius-full: 999px;

  /* Spacing scale (4px base) */
  --space-1:  4px;
  --space-2:  8px;
  --space-3:  12px;
  --space-4:  16px;
  --space-5:  20px;
  --space-6:  24px;
  --space-8:  32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;
  --space-20: 80px;
  --space-24: 96px;
  --space-32: 128px;

  /* Typography */
  --font-sans: 'Nunito', 'Noto Sans KR', system-ui, -apple-system, sans-serif;
  --font-serif: 'DM Serif Display', 'Noto Serif KR', Georgia, serif;
  --font-handwriting: 'Gaegu', 'Caveat', cursive;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  --text-xs:   0.75rem;   /* 12px */
  --text-sm:   0.875rem;  /* 14px */
  --text-base: 1rem;      /* 16px */
  --text-lg:   1.125rem;  /* 18px */
  --text-xl:   1.25rem;   /* 20px */
  --text-2xl:  1.5rem;    /* 24px */
  --text-3xl:  1.875rem;  /* 30px */
  --text-4xl:  2.25rem;   /* 36px */
  --text-5xl:  3rem;      /* 48px */
  --text-6xl:  3.75rem;   /* 60px */

  --leading-tight:  1.25;
  --leading-snug:   1.375;
  --leading-normal: 1.5;
  --leading-relaxed:1.625;

  --font-medium:    500;
  --font-semibold:  600;
  --font-bold:      700;
  --font-extrabold: 800;

  /* Transitions */
  --transition-fast:   150ms ease;
  --transition-base:   250ms ease;
  --transition-slow:   400ms ease;

  /* Z-index scale */
  --z-base:     1;
  --z-dropdown: 100;
  --z-navbar:   200;
  --z-modal:    300;
  --z-toast:    400;

  /* Navbar height */
  --nav-height: 64px;
}

/* ─────────────────────────────────────────────
   2. RESET & BASE
   ───────────────────────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-height) + 16px);
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Paper texture overlay */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9999;
  opacity: 0.025;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='200' height='200' filter='url(%23n)' opacity='1'/%3E%3C/svg%3E");
}

body.no-scroll { overflow: hidden; }

img, video { max-width: 100%; height: auto; display: block; }

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}
a:hover { color: var(--color-primary-light); text-decoration: underline; }

ul, ol { list-style: none; }

button { cursor: pointer; font-family: inherit; border: none; background: none; }

input, textarea, select {
  font-family: inherit;
  font-size: var(--text-base);
}

hr {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: var(--space-6) 0;
}

/* ─────────────────────────────────────────────
   3. TYPOGRAPHY
   ───────────────────────────────────────────── */
h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-bold);
  line-height: var(--leading-tight);
  color: var(--color-text);
}

h1 { font-size: clamp(var(--text-3xl), 5vw, var(--text-6xl)); }
h2 { font-size: clamp(var(--text-2xl), 4vw, var(--text-4xl)); }
h3 { font-size: clamp(var(--text-xl), 3vw, var(--text-3xl)); }
h4 { font-size: var(--text-xl); }
h5 { font-size: var(--text-lg); }
h6 { font-size: var(--text-base); }

p { line-height: var(--leading-relaxed); }

.text-sm    { font-size: var(--text-sm); }
.text-lg    { font-size: var(--text-lg); }
.text-xl    { font-size: var(--text-xl); }
.text-muted { color: var(--color-text-muted); }
.text-center { text-align: center; }
.text-primary { color: var(--color-primary); }
.text-accent  { color: var(--color-accent); }

.section-label {
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-gold);
  margin-bottom: var(--space-3);
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(var(--text-2xl), 4vw, var(--text-4xl));
  font-weight: 400;
  margin-bottom: var(--space-4);
}

.section-subtitle {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 640px;
  margin-inline: auto;
  line-height: var(--leading-relaxed);
}

/* Korean text styling */
.korean {
  font-family: 'Noto Sans KR', var(--font-sans);
  font-weight: var(--font-medium);
  color: var(--color-primary);
}

/* ─────────────────────────────────────────────
   4. LAYOUT UTILITIES
   ───────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: 1200px;
  margin-inline: auto;
  padding-inline: var(--space-6);
}

.container--narrow { max-width: 760px; }
.container--wide   { max-width: 1400px; }

.section {
  padding-block: var(--space-20);
}

.section--alt {
  background-color: var(--color-bg-alt);
}

.grid {
  display: grid;
  gap: var(--space-6);
}
.grid--2 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.grid--4 { grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); }

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: var(--space-2); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }

.mt-4  { margin-top: var(--space-4); }
.mt-6  { margin-top: var(--space-6); }
.mt-8  { margin-top: var(--space-8); }
.mt-12 { margin-top: var(--space-12); }
.mb-4  { margin-bottom: var(--space-4); }
.mb-6  { margin-bottom: var(--space-6); }
.mb-8  { margin-bottom: var(--space-8); }

/* ─────────────────────────────────────────────
   5. BUTTONS
   ───────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-sm);
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
  line-height: 1;
  min-height: 44px; /* minimum tap target */
  cursor: pointer;
  border: 2px solid transparent;
  transition: all var(--transition-base);
  text-decoration: none;
  white-space: nowrap;
  user-select: none;
}

.btn:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
}

.btn--primary {
  background: var(--color-primary);
  color: var(--color-text-inverse);
  border-color: var(--color-primary);
}
.btn--primary:hover {
  background: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  color: var(--color-text-inverse);
  text-decoration: none;
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn--accent {
  background: var(--color-accent);
  color: var(--color-text-inverse);
  border-color: var(--color-accent);
}
.btn--accent:hover {
  background: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
  color: var(--color-text-inverse);
  text-decoration: none;
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn--ghost {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}
.btn--ghost:hover {
  background: var(--color-primary);
  color: var(--color-text-inverse);
  text-decoration: none;
  transform: translateY(-1px);
}

.btn--danger {
  background: var(--color-error);
  color: white;
  border-color: var(--color-error);
}
.btn--danger:hover {
  background: #dc2626;
  border-color: #dc2626;
  color: white;
  text-decoration: none;
}

.btn--outline {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}
.btn--outline:hover {
  background: var(--color-primary);
  color: white;
  text-decoration: none;
  transform: translateY(-1px);
}

.btn--outline-white {
  background: transparent;
  color: white;
  border-color: rgba(255,255,255,0.6);
}
.btn--outline-white:hover {
  background: rgba(255,255,255,0.1);
  border-color: white;
  color: white;
  text-decoration: none;
}

.btn--sm  { padding: var(--space-2) var(--space-4); font-size: var(--text-sm); }
.btn--lg  { padding: var(--space-4) var(--space-8); font-size: var(--text-lg); }
.btn--xl  { padding: var(--space-5) var(--space-10); font-size: var(--text-xl); border-radius: var(--radius-md); }
.btn--full { width: 100%; justify-content: center; }

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none !important;
  box-shadow: none !important;
}

/* ─────────────────────────────────────────────
   6. FORMS
   ───────────────────────────────────────────── */
.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-bottom: var(--space-5);
}

.form-label {
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--color-text);
}

.form-input {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: var(--text-base);
  color: var(--color-text);
  background: var(--color-surface);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  outline: none;
  min-height: 44px;
}

.form-input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(26, 58, 107, 0.15);
  outline: 2px solid var(--color-primary);
  outline-offset: 1px;
}

.form-input.input--error {
  border-color: var(--color-error);
}
.form-input.input--error:focus {
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.15);
}

.form-input::placeholder { color: var(--color-text-subtle); }

textarea.form-input {
  resize: vertical;
  min-height: 100px;
}

.field-error {
  font-size: var(--text-sm);
  color: var(--color-error);
  min-height: 1.2em;
}

/* ─────────────────────────────────────────────
   7. NAVBAR
   ───────────────────────────────────────────── */
#main-nav {
  position: sticky;
  top: 0;
  z-index: var(--z-navbar);
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-xs);
  height: var(--nav-height);
}

.nav__inner {
  display: flex;
  align-items: center;
  height: 100%;
  gap: var(--space-6);
}

.nav__brand {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-lg);
  color: var(--color-text);
  text-decoration: none;
  font-weight: var(--font-medium);
  flex-shrink: 0;
}
.nav__brand:hover { text-decoration: none; color: var(--color-primary); }
.nav__brand-icon { font-size: 1.5em; }
.nav__brand-text strong { color: var(--color-primary); }

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-left: auto;
}

.nav__link {
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--color-text-muted);
  text-decoration: none;
  transition: all var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
}
.nav__link:hover { color: var(--color-primary); background: var(--color-bg-alt); text-decoration: none; }
.nav__link--active { color: var(--color-primary); font-weight: var(--font-semibold); }

.nav__actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-left: auto;
}

.nav__dark-toggle {
  padding: var(--space-2);
  border-radius: var(--radius-sm);
  font-size: 1.1em;
  transition: background var(--transition-fast);
  line-height: 1;
}
.nav__dark-toggle:hover { background: var(--color-bg-alt); }

/* Resources dropdown */
.nav__res-menu { position: relative; }
.nav__res-btn { border: none; background: none; font-family: inherit; font-size: inherit; }
.nav__res-dropdown { left: 0; right: auto; min-width: 200px; }

/* Avatar dropdown */
.nav__user-menu { position: relative; }

.nav__avatar {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--color-text);
  cursor: pointer;
  transition: background var(--transition-fast);
}
.nav__avatar:hover { background: var(--color-bg-alt); }
.nav__caret { font-size: 0.7em; color: var(--color-text-muted); }
.nav__username { display: none; }
@media (min-width: 640px) { .nav__username { display: inline; } }

.nav__dropdown {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 200px;
  max-width: calc(100vw - 1rem);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: var(--space-2);
  z-index: var(--z-dropdown);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: all var(--transition-fast);
}
.nav__dropdown--open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.nav__dropdown-item {
  display: block;
  width: 100%;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-xs);
  font-size: var(--text-sm);
  color: var(--color-text);
  text-align: left;
  transition: background var(--transition-fast);
  text-decoration: none;
  background: none;
  cursor: pointer;
}
.nav__dropdown-item:hover { background: var(--color-bg-alt); color: var(--color-primary); text-decoration: none; }
.nav__dropdown-item--highlight { color: var(--color-primary); font-weight: var(--font-semibold); }
.nav__dropdown-item--danger { color: var(--color-error); }
.nav__dropdown-item--danger:hover { background: var(--color-error-light); color: var(--color-error); }
.nav__dropdown-divider { border: none; border-top: 1px solid var(--color-border); margin: var(--space-2) 0; }

.nav__badge--admin {
  font-size: var(--text-xs);
  background: var(--color-gold);
  color: white;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  font-weight: var(--font-semibold);
}

/* Hamburger */
.nav__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-2);
  margin-left: auto;
}
.nav__hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
}
.nav__hamburger--open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__hamburger--open span:nth-child(2) { opacity: 0; }
.nav__hamburger--open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.nav__mobile-menu {
  display: none;
  flex-direction: column;
  gap: var(--space-1);
  padding: var(--space-4) var(--space-6);
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  box-shadow: var(--shadow-md);
}
.nav__mobile-menu--open { display: flex; }
.nav__mobile-menu .nav__link { font-size: var(--text-base); padding: var(--space-3) var(--space-4); }
.nav__mobile-actions { display: flex; flex-wrap: wrap; gap: var(--space-3); padding-top: var(--space-4); border-top: 1px solid var(--color-border); }

@media (max-width: 767px) {
  .nav__links { display: none; }
  .nav__actions .btn { display: none; }
  .nav__hamburger { display: flex; }
  #main-nav { height: var(--nav-height); }
  .nav__actions { margin-left: 0; gap: var(--space-2); }
  .nav__dark-toggle { display: flex; }
  .nav__user-menu { display: none; }
}

/* ─────────────────────────────────────────────
   8. FOOTER
   ───────────────────────────────────────────── */
.footer {
  background: #2C2420;
  color: rgba(255,255,255,0.7);
  padding-block: var(--space-16) var(--space-8);
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-10);
  margin-bottom: var(--space-12);
}

.footer__brand {
  display: flex;
  flex-direction: column;
}

.footer__logo {
  font-size: var(--text-xl);
  font-weight: var(--font-bold);
  color: white;
  text-decoration: none;
  margin-bottom: var(--space-4);
  display: inline-block;
}
.footer__logo:hover { color: var(--color-accent); text-decoration: none; }

.footer__discord {
  display: inline-block;
  color: rgba(255,255,255,0.7);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  text-decoration: none;
  transition: color var(--transition-fast);
}
.footer__discord:hover { color: white; text-decoration: none; }

.footer__brand-name {
  font-size: var(--text-xl);
  font-weight: var(--font-bold);
  color: white;
  margin-bottom: var(--space-4);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.footer__tagline {
  margin-bottom: var(--space-5);
  line-height: var(--leading-relaxed);
}

.footer__socials {
  display: flex;
  gap: var(--space-3);
}

.footer__social-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: rgba(255,255,255,0.1);
  border-radius: var(--radius-sm);
  color: white;
  font-size: 1em;
  transition: background var(--transition-fast);
  text-decoration: none;
}
.footer__social-link:hover { background: var(--color-accent); text-decoration: none; color: white; }

.footer__col-title {
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: white;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-4);
}

.footer__links { display: flex; flex-direction: column; gap: var(--space-2); }
.footer__link {
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.65);
  text-decoration: none;
  transition: color var(--transition-fast);
}
.footer__link:hover { color: white; text-decoration: none; }

.footer__bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: var(--space-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  font-size: var(--text-sm);
  flex-wrap: wrap;
}

.footer__legal { display: flex; gap: var(--space-4); }
.footer__legal .footer__link { opacity: 0.7; }

@media (max-width: 767px) {
  .footer__grid { grid-template-columns: 1fr; gap: var(--space-8); }
  .footer__bottom { flex-direction: column; text-align: center; }
}

/* ─────────────────────────────────────────────
   9. TOAST NOTIFICATIONS
   ───────────────────────────────────────────── */
.toast-container {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  z-index: var(--z-toast);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  max-width: 360px;
  width: calc(100vw - var(--space-12));
}

.toast {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  box-shadow: var(--shadow-lg);
  border-left: 4px solid var(--color-info);
  opacity: 0;
  transform: translateX(20px);
  transition: all var(--transition-base);
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
}
.toast--visible { opacity: 1; transform: translateX(0); }
.toast--success { border-left-color: var(--color-success); }
.toast--error   { border-left-color: var(--color-error); }
.toast--warning { border-left-color: var(--color-warning); }
.toast--info    { border-left-color: var(--color-info); }

.toast__icon { flex-shrink: 0; font-size: 1.1em; line-height: 1; margin-top: 1px; }
.toast__message { flex: 1; color: var(--color-text); }
.toast__close {
  flex-shrink: 0;
  font-size: 1.2em;
  color: var(--color-text-subtle);
  line-height: 1;
  padding: 0 2px;
}
.toast__close:hover { color: var(--color-text); }

/* ─────────────────────────────────────────────
   10. MODAL
   ───────────────────────────────────────────── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.55);
  z-index: var(--z-modal);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
}
.modal-overlay--visible { opacity: 1; visibility: visible; }

.modal {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  width: 100%;
  max-width: 480px;
  overflow: hidden;
  transform: scale(0.95);
  transition: transform var(--transition-base);
}
.modal-overlay--visible .modal { transform: scale(1); }

.modal__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-6) var(--space-6) var(--space-4);
  border-bottom: 1px solid var(--color-border);
}
.modal__title { font-size: var(--text-xl); font-weight: var(--font-bold); }
.modal__close {
  font-size: 1.5em;
  color: var(--color-text-muted);
  line-height: 1;
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-xs);
}
.modal__close:hover { background: var(--color-bg-alt); color: var(--color-text); }

.modal__body {
  padding: var(--space-6);
  color: var(--color-text-muted);
  line-height: var(--leading-relaxed);
}

.modal__footer {
  display: flex;
  justify-content: flex-end;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-6) var(--space-6);
}

/* ─────────────────────────────────────────────
   11. BADGES & TAGS
   ───────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.badge--primary  { background: var(--color-primary);      color: white; }
.badge--accent   { background: var(--color-accent);       color: white; }
.badge--success  { background: var(--color-success-light); color: var(--color-success); }
.badge--warning  { background: var(--color-warning-light); color: #92400e; }
.badge--locked   { background: var(--color-locked-bg);    color: var(--color-locked); }
.badge--free     { background: var(--color-success-light); color: var(--color-success); }
.badge--popular  { background: var(--color-accent);       color: white; }
.badge--new      { background: var(--color-info-light);   color: var(--color-info); }

/* ─────────────────────────────────────────────
   12. AVATAR
   ───────────────────────────────────────────── */
.avatar {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  background: var(--color-primary);
  color: white;
  font-weight: var(--font-bold);
  flex-shrink: 0;
  user-select: none;
}
.avatar--xs  { width: 28px; height: 28px; font-size: var(--text-xs); }
.avatar--sm  { width: 36px; height: 36px; font-size: var(--text-sm); }
.avatar--md  { width: 48px; height: 48px; font-size: var(--text-base); }
.avatar--lg  { width: 64px; height: 64px; font-size: var(--text-xl); }
.avatar--xl  { width: 80px; height: 80px; font-size: var(--text-2xl); }

/* ─────────────────────────────────────────────
   13. PROGRESS BAR
   ───────────────────────────────────────────── */
.progress-bar {
  width: 100%;
  height: 8px;
  background: var(--color-border);
  border-radius: var(--radius-full);
  overflow: hidden;
}
.progress-bar__fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary), var(--color-primary-light));
  border-radius: var(--radius-full);
  transition: width var(--transition-slow);
}

.progress-info {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-2);
}

/* ─────────────────────────────────────────────
   14. CARDS
   ───────────────────────────────────────────── */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-6);
  box-shadow: var(--shadow-xs);
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}
.card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.card--flat { box-shadow: none; }
.card--flat:hover { box-shadow: var(--shadow-sm); transform: none; }

/* ─────────────────────────────────────────────
   15. TESTIMONIAL CARDS
   ───────────────────────────────────────────── */
.testimonial {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  transition: box-shadow 0.2s, transform 0.2s;
}
.testimonial:hover {
  box-shadow: 0 6px 24px rgba(0,0,0,0.10);
  transform: translateY(-2px);
}

.testimonial__stars { color: var(--color-accent-muted); font-size: 1.1em; letter-spacing: 2px; }
.testimonial__text {
  color: var(--color-text-muted);
  line-height: var(--leading-relaxed);
  flex: 1;
  font-style: italic;
  display: -webkit-box;
  -webkit-line-clamp: 5;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.testimonial__footer { display: flex; align-items: center; gap: var(--space-3); }
.testimonial__name { font-weight: var(--font-semibold); font-size: var(--text-sm); }
.testimonial__meta { font-size: var(--text-xs); color: var(--color-text-subtle); }

.before-after {
  background: linear-gradient(135deg, var(--color-error-light), var(--color-success-light));
  border-radius: var(--radius-sm);
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-xs);
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: var(--space-2);
  align-items: center;
  margin-top: var(--space-3);
}
.before-after__arrow { font-size: 1em; }
.before-after__before { color: #991b1b; }
.before-after__after { color: #065f46; font-weight: var(--font-semibold); text-align: right; }

/* ─────────────────────────────────────────────
   16. PRICING CARDS
   ───────────────────────────────────────────── */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-6);
  align-items: start;
}

.pricing-card {
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  position: relative;
  transition: all var(--transition-base);
}
.pricing-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.pricing-card--featured {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-lg);
  transform: translateY(-8px);
}
.pricing-card--featured:hover { transform: translateY(-12px); }

.pricing-card__badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-primary);
  color: white;
  font-size: var(--text-xs);
  font-weight: var(--font-bold);
  padding: 4px 16px;
  border-radius: var(--radius-full);
  white-space: nowrap;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.pricing-card--premium .pricing-card__badge { background: var(--color-gold); }

.pricing-card__plan { font-size: var(--text-sm); font-weight: var(--font-semibold); color: var(--color-text-muted); text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: var(--space-2); }
.pricing-card__price { display: flex; align-items: baseline; gap: var(--space-1); margin-bottom: var(--space-2); }
.pricing-card__currency { font-size: var(--text-xl); font-weight: var(--font-bold); color: var(--color-text-muted); }
.pricing-card__amount { font-size: clamp(2.5rem, 5vw, 3.5rem); font-weight: var(--font-extrabold); color: var(--color-text); line-height: 1; }
.pricing-card__period { font-size: var(--text-sm); color: var(--color-text-muted); }
.pricing-card__desc { font-size: var(--text-sm); color: var(--color-text-muted); margin-bottom: var(--space-6); }

.pricing-card__features { list-style: none; display: flex; flex-direction: column; gap: var(--space-3); margin-bottom: var(--space-8); }
.pricing-card__feature {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
}
.pricing-card__feature::before { content: "✓"; color: var(--color-success); font-weight: var(--font-bold); flex-shrink: 0; margin-top: 1px; }

.pricing-card__guarantee {
  text-align: center;
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-top: var(--space-4);
}

/* ─────────────────────────────────────────────
   17. COURSE MODULE & LESSON LIST
   ───────────────────────────────────────────── */
.module-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.module-card__header {
  padding: var(--space-5) var(--space-6);
  background: var(--color-bg-alt);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: var(--space-4);
  user-select: none;
}
.module-card__header:hover { background: var(--color-border-light); }

.module-icon { font-size: 1.5em; flex-shrink: 0; }
.module-info { flex: 1; }
.module-title { font-size: var(--text-lg); font-weight: var(--font-bold); margin-bottom: 2px; }
.module-subtitle { font-size: var(--text-sm); color: var(--color-text-muted); }
.module-toggle { font-size: 0.8em; color: var(--color-text-muted); transition: transform var(--transition-fast); flex-shrink: 0; }
.module-card.is-open .module-toggle { transform: rotate(180deg); }

.module-card__lessons { display: none; }
.module-card.is-open .module-card__lessons { display: block; }

.lesson-item {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-4) var(--space-6);
  border-top: 1px solid var(--color-border-light);
  cursor: pointer;
  transition: background var(--transition-fast);
  text-decoration: none;
  color: var(--color-text);
}
.lesson-item:hover { background: var(--color-bg-alt); text-decoration: none; color: var(--color-text); }
.lesson-item--active { background: rgba(26, 58, 107, 0.05); border-left: 3px solid var(--color-primary); }
.lesson-item--locked { cursor: default; }
.lesson-item--locked:hover { background: transparent; }

.lesson-item__num {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-full);
  background: var(--color-border);
  color: var(--color-text-muted);
  font-size: var(--text-xs);
  font-weight: var(--font-bold);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.lesson-item--active .lesson-item__num { background: var(--color-primary); color: white; }
.lesson-item--completed .lesson-item__num { background: var(--color-success); color: white; }
.lesson-item--locked .lesson-item__num { background: var(--color-locked-bg); color: var(--color-locked); }

.lesson-item__info { flex: 1; }
.lesson-item__title { font-weight: var(--font-medium); font-size: var(--text-sm); }
.lesson-item__title--locked { color: var(--color-text-muted); }
.lesson-item__duration { font-size: var(--text-xs); color: var(--color-text-subtle); margin-top: 2px; }

.lesson-item__badge { margin-left: auto; flex-shrink: 0; }
.lesson-lock-icon { font-size: 0.9em; color: var(--color-locked); }
.lesson-check-icon { font-size: 1.1em; color: var(--color-success); }

/* Video player */
.video-player {
  background: #000;
  border-radius: var(--radius-md);
  overflow: hidden;
  position: relative;
  padding-top: 56.25%; /* 16:9 */
}
.video-player iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: none;
}
.video-player__placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  color: white;
  text-align: center;
  padding: var(--space-6);
}
.video-player__placeholder-icon { font-size: 4em; opacity: 0.5; }

/* ─────────────────────────────────────────────
   18. LANDING PAGE SECTIONS
   ───────────────────────────────────────────── */

/* Hero */
.hero {
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 50%, #312e81 100%);
  color: white;
  padding-block: var(--space-24) var(--space-20);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.hero__inner {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
}

.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  background: rgba(255,255,255,0.15);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  margin-bottom: var(--space-5);
}

.hero__title {
  font-size: clamp(2.2rem, 5vw, 3.5rem);
  font-weight: var(--font-extrabold);
  line-height: 1.1;
  margin-bottom: var(--space-5);
  color: white;
}

.hero__title span { color: var(--color-accent-muted); }
.hero__title-anchor {
  font-size: clamp(1.2rem, 2.5vw, 1.8rem);
  font-weight: var(--font-semibold);
  color: rgba(255,255,255,0.55);
  letter-spacing: 0.02em;
}

.hero__subtitle {
  font-size: var(--text-lg);
  opacity: 0.85;
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-8);
  max-width: 480px;
}

.hero__cta {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.hero__stats {
  display: flex;
  gap: var(--space-8);
  margin-top: var(--space-10);
}

.hero__stat-value {
  font-size: var(--text-2xl);
  font-weight: var(--font-extrabold);
  color: var(--color-accent-muted);
}
.hero__stat-label { font-size: var(--text-xs); opacity: 0.7; text-transform: uppercase; letter-spacing: 0.08em; }

/* Hero visual */
.hero__visual {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.hero__preview-card {
  background: rgba(255,255,255,0.08);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
}

.hero__preview-video {
  background: #000;
  border-radius: var(--radius-sm);
  overflow: hidden;
  position: relative;
  padding-top: 56.25%;
  margin-bottom: var(--space-4);
}
.hero__preview-video iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: none;
}

.hero__preview-label {
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  opacity: 0.6;
  margin-bottom: var(--space-2);
}
.hero__preview-title { font-weight: var(--font-semibold); opacity: 0.9; }

.hero__mini-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3);
}

.hero__mini-stat {
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-sm);
  padding: var(--space-3) var(--space-4);
  text-align: center;
}
.hero__mini-stat-val { font-size: var(--text-xl); font-weight: var(--font-bold); }
.hero__mini-stat-lbl { font-size: var(--text-xs); opacity: 0.6; }

@media (max-width: 900px) {
  .hero__inner { grid-template-columns: 1fr; }
  .hero__visual { display: none; }
}

/* Why This Works */
.why-card {
  text-align: center;
  padding: var(--space-6);
}
.why-card__icon { font-size: 2.5em; margin-bottom: var(--space-4); }
.why-card__title { font-size: var(--text-lg); font-weight: var(--font-bold); margin-bottom: var(--space-3); }
.why-card__text { font-size: var(--text-sm); color: var(--color-text-muted); line-height: var(--leading-relaxed); }

/* Outcomes */
.outcomes-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-4);
}
.outcome-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-4);
  background: var(--color-surface);
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border-light);
}
.outcome-item__icon { font-size: 1.2em; flex-shrink: 0; margin-top: 1px; }
.outcome-item__text { font-size: var(--text-sm); line-height: var(--leading-relaxed); font-weight: var(--font-medium); }

/* FAQ */
.faq-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}
.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-5) var(--space-6);
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
  text-align: left;
  background: var(--color-surface);
  cursor: pointer;
  transition: background var(--transition-fast);
  gap: var(--space-4);
}
.faq-question:hover { background: var(--color-bg-alt); }
.faq-caret { flex-shrink: 0; transition: transform var(--transition-fast); font-size: 0.8em; color: var(--color-text-muted); }
.faq-item.is-open .faq-caret { transform: rotate(180deg); }
.faq-answer {
  display: none;
  padding: 0 var(--space-6) var(--space-5);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: var(--leading-relaxed);
  background: var(--color-surface);
}
.faq-item.is-open .faq-answer { display: block; }

/* About */
.about-inner {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-12);
  align-items: center;
}
.about-photo {
  width: 200px;
  height: 200px;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 5rem;
  flex-shrink: 0;
  box-shadow: var(--shadow-lg);
  border: 4px solid white;
}
.about-bio { line-height: var(--leading-relaxed); color: var(--color-text-muted); margin-bottom: var(--space-4); }
.about-credentials { display: flex; flex-wrap: wrap; gap: var(--space-3); }
.about-credential {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: var(--color-bg-alt);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
}

@media (max-width: 640px) {
  .about-inner { grid-template-columns: 1fr; text-align: center; }
  .about-photo { margin: 0 auto; }
  .about-credentials { justify-content: center; }
}

/* Contact */
.contact-form-wrap {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  max-width: 600px;
  margin: 0 auto;
}

/* CTA Banner */
.cta-banner {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: white;
  text-align: center;
  padding-block: var(--space-20);
}
.cta-banner__title { color: white; margin-bottom: var(--space-4); }
.cta-banner__subtitle { opacity: 0.85; max-width: 560px; margin: 0 auto var(--space-8); line-height: var(--leading-relaxed); }
.cta-banner__actions { display: flex; gap: var(--space-4); justify-content: center; flex-wrap: wrap; }
.cta-banner__guarantee { margin-top: var(--space-6); font-size: var(--text-sm); opacity: 0.7; }

/* ─────────────────────────────────────────────
   19. AUTH PAGES
   ───────────────────────────────────────────── */
.auth-page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.auth-main {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-8) var(--space-4);
  background: var(--color-bg-alt);
}

.auth-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-10);
  width: 100%;
  max-width: 440px;
  box-shadow: var(--shadow-md);
}

.auth-card__header { text-align: center; margin-bottom: var(--space-8); }
.auth-card__icon { font-size: 3em; margin-bottom: var(--space-3); }
.auth-card__title { font-size: var(--text-2xl); font-weight: var(--font-extrabold); margin-bottom: var(--space-2); }
.auth-card__subtitle { color: var(--color-text-muted); font-size: var(--text-sm); }

.auth-divider {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin: var(--space-5) 0;
  font-size: var(--text-sm);
  color: var(--color-text-subtle);
}
.auth-divider::before, .auth-divider::after {
  content: "";
  flex: 1;
  border-top: 1px solid var(--color-border);
}

.auth-footer-text {
  text-align: center;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-top: var(--space-6);
}

.demo-login-btn {
  width: 100%;
  padding: var(--space-3) var(--space-6);
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-bg-alt);
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-align: center;
}
.demo-login-btn:hover { border-color: var(--color-primary); color: var(--color-primary); background: rgba(26, 58, 107, 0.04); }

/* ─────────────────────────────────────────────
   20. DASHBOARD
   ───────────────────────────────────────────── */
.dashboard-page { min-height: 100vh; }
.page-header {
  background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
  color: white;
  padding-block: var(--space-10) var(--space-12);
}
.page-header__title { color: white; margin-bottom: var(--space-2); }
.page-header__subtitle { opacity: 0.8; }

.dashboard-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--space-5);
  margin-bottom: var(--space-8);
}

.stat-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-6);
}
.stat-card__value { font-size: var(--text-3xl); font-weight: var(--font-extrabold); color: var(--color-primary); margin-bottom: var(--space-1); }
.stat-card__label { font-size: var(--text-sm); color: var(--color-text-muted); }

.upgrade-banner {
  background: linear-gradient(135deg, #fff8eb, #fff3d8);
  border: 2px solid var(--color-accent-muted);
  border-radius: var(--radius-md);
  padding: var(--space-6);
  display: flex;
  align-items: center;
  gap: var(--space-5);
  margin-bottom: var(--space-8);
}
.upgrade-banner__icon { font-size: 2.5em; flex-shrink: 0; }
.upgrade-banner__text h3 { font-size: var(--text-lg); margin-bottom: var(--space-1); }
.upgrade-banner__text p { font-size: var(--text-sm); color: var(--color-text-muted); }
.upgrade-banner__action { margin-left: auto; flex-shrink: 0; }

@media (max-width: 640px) {
  .upgrade-banner { flex-direction: column; text-align: center; }
  .upgrade-banner__action { margin-left: 0; width: 100%; }
}

/* ─────────────────────────────────────────────
   21. COURSE PAGE
   ───────────────────────────────────────────── */
.course-layout {
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: var(--space-6);
  align-items: start;
}

.course-sidebar {
  position: sticky;
  top: calc(var(--nav-height) + var(--space-4));
  max-height: calc(100vh - var(--nav-height) - var(--space-8));
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  scrollbar-width: thin;
  scrollbar-color: var(--color-border) transparent;
}

.course-search {
  position: relative;
}
.course-search__input {
  width: 100%;
  padding: var(--space-3) var(--space-4) var(--space-3) 40px;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
  background: var(--color-surface);
  color: var(--color-text);
  outline: none;
  transition: border-color var(--transition-fast);
}
.course-search__input:focus { border-color: var(--color-primary); }
.course-search__icon {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-muted);
  font-size: 1em;
  pointer-events: none;
}

.course-main { min-width: 0; }

.video-section { margin-bottom: var(--space-6); }

.lesson-controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.lesson-nav {
  display: flex;
  gap: var(--space-3);
}

@media (max-width: 900px) {
  .course-layout { grid-template-columns: 1fr; }
  .course-sidebar {
    position: static;
    max-height: none;
    order: 2;
  }
  .course-main { order: 1; }
}

/* ─────────────────────────────────────────────
   22. ACCOUNT PAGE
   ───────────────────────────────────────────── */
.account-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: var(--space-8);
  align-items: start;
}

.account-sidebar {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  position: sticky;
  top: calc(var(--nav-height) + var(--space-4));
}

.account-nav { display: flex; flex-direction: column; }
.account-nav-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-6);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--color-text-muted);
  cursor: pointer;
  border: none;
  background: none;
  text-align: left;
  transition: all var(--transition-fast);
  border-left: 3px solid transparent;
  text-decoration: none;
}
.account-nav-item:hover { background: var(--color-bg-alt); color: var(--color-primary); text-decoration: none; }
.account-nav-item--active { color: var(--color-primary); background: rgba(26, 58, 107, 0.05); border-left-color: var(--color-primary); font-weight: var(--font-semibold); }
.account-nav-item__icon { font-size: 1.1em; }

.account-section {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-8);
  margin-bottom: var(--space-6);
}
.account-section__title {
  font-size: var(--text-xl);
  font-weight: var(--font-bold);
  margin-bottom: var(--space-6);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--color-border);
}

.subscription-status {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-5);
  background: var(--color-bg-alt);
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-5);
}
.subscription-status__icon { font-size: 2em; }
.subscription-status__name { font-weight: var(--font-bold); font-size: var(--text-lg); }
.subscription-status__meta { font-size: var(--text-sm); color: var(--color-text-muted); }
.subscription-status__badge { margin-left: auto; }

@media (max-width: 767px) {
  .account-layout { grid-template-columns: 1fr; }
  .account-sidebar { position: static; }
  .account-nav { flex-direction: row; flex-wrap: wrap; }
  .account-nav-item { flex: 1; justify-content: center; border-left: none; border-bottom: 3px solid transparent; padding: var(--space-3) var(--space-2); font-size: var(--text-xs); }
  .account-nav-item--active { border-bottom-color: var(--color-primary); font-weight: 400; }
  .account-nav-item__icon { display: none; }
}

/* Subscribe page */
.subscribe-page { min-height: 100vh; }
.subscribe-header { text-align: center; margin-bottom: var(--space-12); }

/* Checkout modal simulation */
.checkout-form { display: flex; flex-direction: column; gap: var(--space-5); }
.checkout-summary {
  background: var(--color-bg-alt);
  border-radius: var(--radius-sm);
  padding: var(--space-5);
  margin-bottom: var(--space-2);
}
.checkout-summary__row { display: flex; justify-content: space-between; align-items: center; font-size: var(--text-sm); padding: var(--space-2) 0; }
.checkout-summary__row--total { font-weight: var(--font-bold); font-size: var(--text-base); border-top: 1px solid var(--color-border); margin-top: var(--space-2); padding-top: var(--space-4); }

.fake-card-input {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: var(--space-3);
}

.stripe-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  background: #635bff;
  color: white;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-xs);
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
}

/* ─────────────────────────────────────────────
   23. ANIMATIONS & TRANSITIONS
   ───────────────────────────────────────────── */
[data-animate] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}
[data-animate].is-visible {
  opacity: 1;
  transform: translateY(0);
}
[data-animate="fade-left"] { transform: translateX(-24px); }
[data-animate="fade-left"].is-visible { transform: translateX(0); }
[data-animate="fade-right"] { transform: translateX(24px); }
[data-animate="fade-right"].is-visible { transform: translateX(0); }
[data-animate="zoom"] { transform: scale(0.95); }
[data-animate="zoom"].is-visible { transform: scale(1); }

/* Staggered children */
.stagger-children > * { transition-delay: calc(var(--stagger-index, 0) * 60ms); }

/* Pulse animation for locked badges */
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}
.badge--locked { animation: pulse 2.5s ease-in-out infinite; }

/* Loading spinner */
@keyframes spin {
  to { transform: rotate(360deg); }
}
.spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

/* ── Micro-interaction animations ────────────── */

/* Button ripple effect */
.btn { position: relative; overflow: hidden; }
.btn-ripple {
  position: absolute; border-radius: 50%;
  background: rgba(255,255,255,0.35);
  transform: scale(0); animation: ripple 0.5s ease-out;
  pointer-events: none;
}
@keyframes ripple { to { transform: scale(4); opacity: 0; } }

/* Success pop */
@keyframes successPop {
  0% { transform: scale(0.5); opacity: 0; }
  50% { transform: scale(1.15); }
  100% { transform: scale(1); opacity: 1; }
}
.anim-success-pop { animation: successPop 0.4s cubic-bezier(0.34, 1.56, 0.64, 1); }

/* Shake for wrong answer */
@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20%, 60% { transform: translateX(-6px); }
  40%, 80% { transform: translateX(6px); }
}
.anim-shake { animation: shake 0.4s ease; }

/* Fade-in up (for page sections, lists) */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}
.anim-fade-in-up { animation: fadeInUp 0.4s ease both; }

/* Stagger children */
.anim-stagger > *:nth-child(1)  { animation-delay: 0ms; }
.anim-stagger > *:nth-child(2)  { animation-delay: 50ms; }
.anim-stagger > *:nth-child(3)  { animation-delay: 100ms; }
.anim-stagger > *:nth-child(4)  { animation-delay: 150ms; }
.anim-stagger > *:nth-child(5)  { animation-delay: 200ms; }
.anim-stagger > *:nth-child(6)  { animation-delay: 250ms; }
.anim-stagger > *:nth-child(7)  { animation-delay: 300ms; }
.anim-stagger > *:nth-child(8)  { animation-delay: 350ms; }

/* Skeleton loading */
@keyframes skeletonShimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}
.skeleton {
  background: linear-gradient(90deg, #e8dfd4 25%, #f5efe8 50%, #e8dfd4 75%);
  background-size: 200% 100%;
  animation: skeletonShimmer 1.5s ease infinite;
  border-radius: var(--radius-md);
}
.skeleton-text { height: 1rem; margin-bottom: 0.5rem; }
.skeleton-title { height: 1.5rem; width: 60%; margin-bottom: 0.75rem; }
.skeleton-card { height: 120px; margin-bottom: 1rem; }

/* Confetti burst overlay */
.confetti-overlay {
  position: fixed; top: 0; left: 0; width: 100%; height: 100%;
  pointer-events: none; z-index: 9999;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  .anim-success-pop, .anim-shake, .anim-fade-in-up, .btn-ripple,
  .skeleton, .badge--locked { animation: none; }
  .anim-stagger > * { animation-delay: 0ms !important; }
}

/* ─────────────────────────────────────────────
   24. DARK MODE OVERRIDES
   ───────────────────────────────────────────── */
.dark {
  --color-bg:            #0f1117;
  --color-bg-alt:        #181c24;
  --color-surface:       #1a1f2e;
  --color-surface-raised:#222839;
  --color-border:        #2d3448;
  --color-border-light:  #252c3b;
  --color-text:          #e4e8f0;
  --color-text-muted:    #8f99b5;
  --color-text-subtle:   #5a6478;
  --color-locked:        #4a5568;
  --color-locked-bg:     #1e2533;
  --shadow-xs:   0 1px 2px rgba(0,0,0,0.3);
  --shadow-sm:   0 2px 6px rgba(0,0,0,0.35);
  --shadow-md:   0 4px 16px rgba(0,0,0,0.4);
  --shadow-lg:   0 8px 32px rgba(0,0,0,0.5);
  --shadow-xl:   0 16px 48px rgba(0,0,0,0.6);
}

.dark .hero::before { opacity: 0.5; }
.dark .hero__preview-card { background: rgba(255,255,255,0.05); border-color: rgba(255,255,255,0.1); }
.dark .module-card__header { background: var(--color-bg-alt); }
.dark .module-card__header:hover { background: var(--color-border); }
.dark .faq-question { background: var(--color-surface); }
.dark .faq-question:hover { background: var(--color-bg-alt); }
.dark .faq-answer { background: var(--color-surface); }
.dark .pricing-card { background: var(--color-surface); }
.dark .auth-card { background: var(--color-surface); }
.dark .testimonial { background: var(--color-surface); }
.dark .upgrade-banner { background: linear-gradient(135deg, #2a1020, #1e0a18); border-color: #ff6584; }
.dark .checkout-summary { background: var(--color-bg-alt); }
.dark .demo-login-btn { background: var(--color-bg-alt); }

/* ─────────────────────────────────────────────
   25. iOS / TOUCH FIXES
   ───────────────────────────────────────────── */

/* Prevent iOS long-press context menu on buttons */
.btn { -webkit-touch-callout: none; }

/* Ensure nav/footer respect iPhone notch & home bar */
#main-nav {
  padding-left:  max(var(--space-4), env(safe-area-inset-left));
  padding-right: max(var(--space-4), env(safe-area-inset-right));
}
.toast-container {
  bottom: max(var(--space-6), calc(env(safe-area-inset-bottom) + var(--space-4)));
  right:  max(var(--space-6), env(safe-area-inset-right));
}
footer {
  padding-bottom: max(var(--space-8), calc(env(safe-area-inset-bottom) + var(--space-4)));
}


/* ─────────────────────────────────────────────
   26. RESPONSIVE OVERRIDES
   ───────────────────────────────────────────── */
@media (max-width: 640px) {
  .section { padding-block: var(--space-12); }
  .hero { padding-block: var(--space-16) var(--space-12); }
  .hero__stats { gap: var(--space-6); }
  .hero__cta { flex-direction: column; align-items: flex-start; }
  .hero__cta .btn { width: 100%; justify-content: center; }
  .pricing-grid { grid-template-columns: 1fr; }
  .pricing-card--featured { transform: none; }
  .auth-card { padding: var(--space-6); }
  .contact-form-wrap { padding: var(--space-6); }
  .account-section { padding: var(--space-5); }
  .cta-banner { padding-block: var(--space-12); }
  .course-search { display: none; }
}

@media (min-width: 768px) {
  .nav__mobile-menu { display: none !important; }
}

/* Utility: visually hidden but accessible */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

/* ─────────────────────────────────────────────
   26. LEGAL PAGES
   ───────────────────────────────────────────── */

.legal-content { line-height: 1.8; color: var(--color-text); }
.legal-content p { margin-bottom: 1rem; }
.legal-content h2 { font-size: 1.2rem; font-weight: 700; margin: 2rem 0 0.75rem; color: var(--color-primary); }
.legal-content h3 { font-size: 1rem; font-weight: 600; margin: 1.25rem 0 0.5rem; }
.legal-content ul { padding-left: 1.5rem; margin-bottom: 1rem; }
.legal-content ul li { margin-bottom: 0.4rem; }
.legal-content a { color: var(--color-accent); text-decoration: underline; }

/* ─────────────────────────────────────────────
   27. LESSON TABS & TRIAL FORM
   ───────────────────────────────────────────── */

.lesson-tabs {
  display: flex;
  gap: 0.375rem;
  justify-content: center;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: calc(var(--radius) + 6px);
  padding: 4px;
  margin-bottom: 2rem;
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
}

.lesson-tab {
  flex: 1;
  padding: 0.625rem 1.25rem;
  border: none;
  border-radius: var(--radius);
  background: transparent;
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text-muted);
  cursor: pointer;
  transition: background 0.2s, color 0.2s, box-shadow 0.2s;
  white-space: nowrap;
}

.lesson-tab--active {
  background: var(--color-surface);
  color: var(--color-primary);
  box-shadow: var(--shadow-sm);
}

.lesson-panel[hidden] { display: none; }

.trial-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  max-width: 560px;
  margin: 0 auto;
  box-shadow: var(--shadow-md);
}

.trial-badge {
  display: inline-block;
  background: var(--color-success-light);
  color: #065f46;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.3rem 0.875rem;
  border-radius: 99px;
  margin-bottom: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.trial-already-applied {
  text-align: center;
  padding: 3.5rem 2rem;
  background: var(--color-success-light);
  border: 1px solid #a7f3d0;
  border-radius: var(--radius-lg);
  max-width: 560px;
  margin: 0 auto;
}

.dark .trial-card {
  background: var(--color-surface);
  border-color: var(--color-border);
}

.dark .trial-already-applied {
  background: rgba(16,185,129,0.1);
  border-color: rgba(16,185,129,0.3);
}

@media (max-width: 480px) {
  .lesson-tabs { flex-direction: column; max-width: 100%; }
  .trial-card { padding: 1.5rem; }
}

/* ── Booking grid (two-card layout) ────── */
.booking-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-8);
  align-items: start;
}

@media (max-width: 860px) {
  .booking-grid { grid-template-columns: 1fr; }
}

.booking-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
}

.booking-card__head {
  background: var(--color-primary);
  color: white;
  padding: var(--space-6);
  text-align: center;
}

.booking-card__head--regular {
  background: #2d3a8c;
}

.booking-card__tag {
  display: inline-block;
  background: rgba(255,255,255,0.18);
  padding: 0.2rem 0.875rem;
  border-radius: var(--radius-full);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
}

.booking-card__tag--regular {
  background: rgba(255,255,255,0.15);
}

.booking-card__icon {
  font-size: 2.25rem;
  margin-bottom: 0.5rem;
}

.booking-card__title {
  font-size: 1.35rem;
  font-weight: 800;
  margin-bottom: 0.25rem;
  color: white;
}

.booking-card__meta {
  font-size: 0.875rem;
  opacity: 0.8;
  margin: 0;
}

.booking-card__body {
  padding: var(--space-6);
}

.booking-card__perks {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

/* ── Testimonial carousel ───────────────── */
.t-carousel {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.t-carousel__track {
  display: flex;
  align-items: stretch;
  gap: 1.5rem;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scrollbar-width: none;
  -ms-overflow-style: none;
  flex: 1;
  padding-bottom: 0.25rem;
}

.t-carousel__track::-webkit-scrollbar { display: none; }

.t-carousel__slide {
  flex: 0 0 calc(33.333% - 1rem);
  scroll-snap-align: start;
  min-width: 0;
}

@media (max-width: 1024px) {
  .t-carousel__slide { flex: 0 0 calc(50% - 0.75rem); }
}

@media (max-width: 640px) {
  .t-carousel__slide { flex: 0 0 calc(100% - 0rem); }
  .t-carousel__btn { display: none; }
}

.t-carousel__btn {
  flex-shrink: 0;
  width: 2.75rem;
  height: 2.75rem;
  border-radius: 50%;
  border: 2px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-primary);
  font-size: 1.75rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s, border-color 0.2s, color 0.2s;
  line-height: 1;
  padding: 0;
}

.t-carousel__btn:hover {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: white;
}

.t-carousel__progress {
  margin-top: 1.5rem;
  height: 3px;
  background: var(--color-border);
  border-radius: 999px;
  overflow: hidden;
  max-width: 320px;
  margin-left: auto;
  margin-right: auto;
}

.t-carousel__progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  border-radius: 999px;
  transition: width 0.2s ease;
  width: 0%;
}

/* ── Testimonial submit block ───────────── */
.testimonial-submit {
  margin-top: var(--space-16);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  max-width: 680px;
  margin-left: auto;
  margin-right: auto;
  box-shadow: var(--shadow-md);
}

.testimonial-submit__title {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
  color: var(--color-primary);
}

.testimonial-submit__sub {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin-bottom: 1.75rem;
}

.testimonial-submit__row {
  display: flex;
  gap: 1.5rem;
  align-items: flex-end;
  flex-wrap: wrap;
}

@media (max-width: 480px) {
  .testimonial-submit { padding: 1.5rem; }
  .testimonial-submit__row { flex-direction: column; gap: 0; }
}

/* ── Feedback & Testimonial section ────── */
.feedback-tabs {
  display: flex;
  gap: 0.375rem;
  justify-content: center;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: calc(var(--radius-md) + 6px);
  padding: 4px;
  margin-bottom: 2rem;
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
}

.feedback-tab {
  flex: 1;
  padding: 0.625rem 1.25rem;
  border: none;
  border-radius: var(--radius-md);
  background: transparent;
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text-muted);
  cursor: pointer;
  transition: background 0.2s, color 0.2s, box-shadow 0.2s;
  white-space: nowrap;
}

.feedback-tab--active {
  background: var(--color-surface);
  color: var(--color-primary);
  box-shadow: var(--shadow-sm);
}

.feedback-panel[hidden] { display: none; }

.feedback-panel > div {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  max-width: 560px;
  margin: 0 auto;
  box-shadow: var(--shadow-md);
}

.star-rating {
  display: flex;
  gap: 0.25rem;
  margin-top: 0.375rem;
}

.star {
  font-size: 2rem;
  background: none;
  border: none;
  cursor: pointer;
  color: #d1d5db;
  transition: color 0.15s;
  padding: 0 0.05rem;
  line-height: 1;
}

.star.hovered,
.star.selected { color: var(--color-warning); }

@media (max-width: 480px) {
  .feedback-panel > div { padding: 1.5rem; }
  .feedback-tabs { flex-direction: column; max-width: 100%; }
}

/* ═══════════════════════════════════════════
   RESOURCES PAGE
════════════════════════════════════════════ */

.resources-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-6);
}

.resources-empty {
  text-align: center;
  padding: 3rem;
  color: var(--color-text-muted);
  font-style: italic;
}

.resource-card {
  display: flex;
  flex-direction: column;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  box-shadow: var(--shadow-sm);
  text-decoration: none;
  color: inherit;
  transition: box-shadow 0.2s, transform 0.2s;
}

.resource-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-3px);
  text-decoration: none;
  color: inherit;
}

.resource-card--article {
  border-left: 4px solid var(--color-accent);
}

.resource-card__category {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-accent);
  margin-bottom: 0.5rem;
}

.resource-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.375rem;
  margin-bottom: 0.75rem;
}

.resource-tag {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  padding: 0.15rem 0.625rem;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-text-muted);
}

.resource-card__title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 0.5rem;
  line-height: 1.3;
}

.resource-card__excerpt {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: var(--leading-relaxed);
  flex: 1;
  margin-bottom: 1rem;
}

.resource-card__meta {
  font-size: 0.8rem;
  color: var(--color-text-subtle);
}

.resource-card__cta {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-primary-light);
  margin-top: auto;
}

/* ── Article page ────────────────────────── */

.article-page {
  padding: 3rem 0 5rem;
}

.article-back {
  display: inline-block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text-muted);
  text-decoration: none;
  margin-bottom: 2rem;
  transition: color 0.15s;
}

.article-back:hover { color: var(--color-primary); text-decoration: none; }

.article-header {
  margin-bottom: 2.5rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--color-border);
}

.article-header__category {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-accent);
  margin-bottom: 0.75rem;
}

.article-header__title {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1.2;
  margin-bottom: 1.25rem;
}

.article-header__meta {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.article-header__avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  object-fit: cover;
}

.article-body {
  font-size: 1.05rem;
  line-height: 1.85;
  color: var(--color-text);
  max-width: 100%;
}

.article-body h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
  margin: 2.5rem 0 1rem;
}

.article-body h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-primary);
  margin: 2rem 0 0.75rem;
}

.article-body p { margin-bottom: 1.25rem; }

.article-body ul, .article-body ol {
  padding-left: 1.5rem;
  margin-bottom: 1.25rem;
}

.article-body li { margin-bottom: 0.5rem; }

.article-body blockquote {
  border-left: 4px solid var(--color-accent);
  padding: 1rem 1.5rem;
  background: var(--color-bg-alt);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin: 1.5rem 0;
  font-style: italic;
  color: var(--color-text-muted);
}

.article-korean-box {
  background: var(--color-primary);
  color: white;
  border-radius: var(--radius-lg);
  padding: 1.5rem 2rem;
  margin: 1.5rem 0;
  text-align: center;
}

.article-korean-box__kr {
  font-family: 'Noto Sans KR', sans-serif;
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.article-korean-box__en {
  font-size: 1rem;
  opacity: 0.9;
  margin-bottom: 0.25rem;
}

.article-korean-box__romanization {
  font-size: 0.875rem;
  opacity: 0.65;
  letter-spacing: 0.05em;
}

.article-cta {
  margin-top: 4rem;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  text-align: center;
}

.article-cta h3 {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 0.5rem;
}

.article-cta p {
  color: var(--color-text-muted);
  margin-bottom: 1.5rem;
}

/* ── Articles blog list ───────────────────── */


.articles-blog-list {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.article-list-item {
  display: block;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-accent);
  border-radius: var(--radius-lg);
  padding: 1.5rem 1.75rem;
  text-decoration: none;
  color: inherit;
  transition: box-shadow 0.2s, transform 0.15s, border-color 0.15s;
}

.article-list-item:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
  text-decoration: none;
  color: inherit;
}

.article-list-item__top {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  margin-bottom: 0.6rem;
  flex-wrap: wrap;
}

.article-list-item__cat {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-accent);
  background: #fff0f3;
  border: 1px solid var(--color-accent-muted);
  border-radius: var(--radius-full);
  padding: 0.15rem 0.6rem;
}

.article-list-item__date {
  font-size: 0.8rem;
  color: var(--color-text-subtle);
}

.article-list-item__title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 0.4rem;
  line-height: 1.3;
}

.article-list-item__excerpt {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.65;
  margin-bottom: 0.75rem;
}

.article-list-item__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.article-list-item__read {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-primary-light);
}

.article-list-item__time {
  font-size: 0.8rem;
  color: var(--color-text-subtle);
}

/* ── Write article page ───────────────────── */

.write-page { max-width: 780px; margin: 0 auto; padding: 2.5rem 1.25rem 5rem; }

.write-page__title {
  font-size: clamp(1.4rem, 3vw, 1.8rem);
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: 0.25rem;
  letter-spacing: -0.02em;
}

.write-form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

@media (max-width: 540px) { .write-form-row { grid-template-columns: 1fr; } }

.write-editor-wrap {
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--color-surface);
}

.write-toolbar {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.5rem 0.75rem;
  background: var(--color-bg-alt);
  border-bottom: 1px solid var(--color-border);
  flex-wrap: wrap;
}

.write-tb-btn {
  width: 32px; height: 32px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  cursor: pointer;
  font-size: 0.85rem;
  font-weight: 700;
  font-family: var(--font-sans);
  color: var(--color-text);
  display: flex; align-items: center; justify-content: center;
  transition: background 0.1s, border-color 0.1s;
}

.write-tb-btn:hover { background: var(--color-bg); border-color: var(--color-primary); }

.write-tb-sep { width: 1px; height: 22px; background: var(--color-border); margin: 0 0.1rem; }

.write-content {
  min-height: 320px;
  padding: 1.25rem 1.5rem;
  outline: none;
  font-size: 1rem;
  line-height: 1.75;
  color: var(--color-text);
  font-family: var(--font-sans);
}

.write-content:empty::before {
  content: attr(data-placeholder);
  color: var(--color-text-subtle);
  pointer-events: none;
}

.write-actions {
  display: flex;
  gap: 0.75rem;
  justify-content: flex-end;
  margin-top: 1.5rem;
  flex-wrap: wrap;
}

/* ── Article content components ─────────────────────────────────────────────── */

/* Pull quote */
.article-body .pull-quote {
  font-size: 1.35rem;
  font-style: italic;
  font-weight: 300;
  color: var(--color-accent, #c0392b);
  line-height: 1.5;
  border-top: 2px solid var(--color-accent, #c0392b);
  border-bottom: 2px solid var(--color-accent, #c0392b);
  padding: 24px 0;
  margin: 40px 0;
  text-align: center;
}

/* Word card (vocabulary spotlight) */
.article-body .word-card {
  background: var(--color-surface, #fff);
  border: 1px solid var(--color-border);
  border-top: 4px solid var(--color-accent, #c0392b);
  border-radius: 16px;
  padding: 32px 36px;
  margin: 36px 0;
  box-shadow: 0 2px 16px rgba(0,0,0,0.05);
}
.article-body .word-card__header {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 10px;
  flex-wrap: wrap;
}
.article-body .word-card__korean {
  font-family: 'Noto Sans KR', sans-serif;
  font-size: 2.6rem;
  font-weight: 700;
  color: var(--color-accent, #c0392b);
  line-height: 1;
}
.article-body .word-card__romanization {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  letter-spacing: 0.04em;
}
.article-body .word-card__hanja {
  font-size: 0.8rem;
  background: var(--color-bg-alt);
  color: var(--color-text-muted);
  padding: 3px 10px;
  border-radius: 99px;
  font-weight: 600;
}
.article-body .word-card__rule {
  font-size: 0.9rem;
  font-weight: 700;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 10px 14px;
  margin: 16px 0;
  line-height: 1.5;
}

/* Korean example box (within word card or standalone) */
.article-body .example {
  background: var(--color-bg-alt);
  border-radius: 10px;
  padding: 16px 20px;
  margin: 12px 0;
}
.article-body .example__korean {
  font-family: 'Noto Sans KR', sans-serif;
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: 3px;
}
.article-body .example__korean .highlight {
  color: var(--color-accent, #c0392b);
  font-weight: 700;
}
.article-body .example__romanization {
  font-size: 0.78rem;
  color: var(--color-text-muted);
  font-style: italic;
  margin-bottom: 3px;
}
.article-body .example__english {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

/* Compound word grid */
.article-body .compound-grid {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 8px 20px;
  margin: 16px 0;
  font-size: 0.875rem;
}
.article-body .compound-grid .kor {
  font-family: 'Noto Sans KR', sans-serif;
  font-weight: 700;
  color: var(--color-accent, #c0392b);
  white-space: nowrap;
}
.article-body .compound-grid .eng {
  color: var(--color-text-muted);
  line-height: 1.5;
}

/* Mistake box (wrong → right) */
.article-body .mistake-box {
  margin: 20px 0;
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}
.article-body .mistake-box__wrong {
  background: #fff5f5;
  border-left: 4px solid #ef4444;
  padding: 12px 18px;
  font-family: 'Noto Sans KR', sans-serif;
  font-size: 0.975rem;
  color: #7f1d1d;
}
.article-body .mistake-box__right {
  background: #f0fdf4;
  border-left: 4px solid #22c55e;
  padding: 12px 18px;
  font-family: 'Noto Sans KR', sans-serif;
  font-size: 0.975rem;
  color: #14532d;
}
.article-body .mistake-box__label {
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 3px;
  opacity: 0.65;
}
.article-body .mistake-box__note {
  font-size: 0.825rem;
  color: var(--color-text-muted);
  background: var(--color-bg-alt);
  padding: 10px 18px;
  border-left: 4px solid var(--color-border);
  line-height: 1.6;
}

/* Quiz section */
.article-body .quiz {
  background: #f8f7ff;
  border: 1px solid #e8e6ff;
  border-radius: 16px;
  padding: 36px 40px;
  margin: 48px 0;
}
.article-body .quiz__title {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: #6c63ff;
  margin-bottom: 6px;
}
.article-body .quiz__heading {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 8px;
  line-height: 1.4;
}
.article-body .quiz__sub {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-bottom: 28px;
}
.article-body .quiz-question {
  margin-bottom: 28px;
  padding-bottom: 28px;
  border-bottom: 1px solid #e8e6ff;
}
.article-body .quiz-question:last-child { border-bottom: none; margin-bottom: 0; padding-bottom: 0; }
.article-body .quiz-question__text,
.article-body .quiz-question__q {
  font-size: 0.95rem;
  font-weight: 700;
  color: #2C2420;
  margin-bottom: 6px;
  line-height: 1.6;
}
.article-body .quiz-question__kr {
  font-family: 'Noto Sans KR', sans-serif;
  font-size: 1.05rem;
  color: #374151;
  margin-bottom: 10px;
  line-height: 1.7;
}
.article-body .quiz-question__blank {
  display: inline-block;
  border-bottom: 2px solid var(--color-text);
  min-width: 72px;
  text-align: center;
  margin: 0 3px;
  font-weight: 700;
  color: var(--color-accent, #c0392b);
  vertical-align: bottom;
}
.article-body .quiz-question__hint {
  font-size: 0.775rem;
  color: var(--color-text-muted);
  font-style: italic;
}
.article-body .quiz-answers {
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px dashed var(--color-border);
}
/* Reveal-style quiz answer boxes */
.article-body .quiz-question details summary {
  font-size: 0;
  font-weight: 600;
  color: #6c63ff;
  cursor: pointer;
  padding: 6px 0;
  list-style: none;
}
.article-body .quiz-question details summary::-webkit-details-marker { display: none; }
.article-body .quiz-question details summary::before { content: "→  Show answer"; font-size: 0.8rem; }
.article-body .quiz-question details[open] summary::before { content: "↓  Hide answer"; font-size: 0.8rem; }
.article-body .quiz-question details .answer {
  font-size: 0.875rem;
  background: #fff;
  border-left: 3px solid #6c63ff;
  padding: 10px 14px;
  margin-top: 8px;
  border-radius: 0 8px 8px 0;
  color: #374151;
  line-height: 1.6;
}
@media (max-width: 640px) { .article-body .quiz { padding: 24px 20px; } }
.article-body details > summary {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-accent, #c0392b);
  cursor: pointer;
  list-style: none;
  padding: 8px 0;
  border-top: 1px solid var(--color-border);
}
.article-body details > summary::-webkit-details-marker { display: none; }
.article-body details > summary::before { content: "▶ "; font-size: 0.65rem; }
.article-body details[open] > summary::before { content: "▼ "; }
.article-body .answer-list {
  font-size: 0.875rem;
  padding: 12px 0 4px 12px;
  line-height: 2;
  color: var(--color-text-muted);
}
.article-body .answer-list .kor {
  font-family: 'Noto Sans KR', sans-serif;
  font-weight: 700;
  color: var(--color-accent, #c0392b);
}

/* Hangul example box */
.article-body .hangul-example {
  background: var(--color-surface, #fff);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 28px 36px;
  margin: 36px 0;
  box-shadow: 0 2px 12px rgba(0,0,0,0.05);
}
.article-body .hangul-example .korean {
  font-family: 'Noto Sans KR', sans-serif;
  font-size: 2.6rem;
  letter-spacing: 0.12em;
  color: var(--color-accent, #c0392b);
  display: block;
  margin-bottom: 6px;
}
.article-body .hangul-example .romanization {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  letter-spacing: 0.06em;
}

/* Stat row (used in Hangul articles) */
.article-body .stat-row {
  display: flex;
  gap: 24px;
  margin: 32px 0;
  flex-wrap: wrap;
}
.article-body .stat-box {
  flex: 1;
  min-width: 130px;
  background: var(--color-surface, #fff);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  padding: 20px;
  text-align: center;
}
.article-body .stat-box .number {
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-accent, #c0392b);
  display: block;
}
.article-body .stat-box .label {
  font-size: 0.72rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.07em;
  margin-top: 4px;
}

/* Student story card */
.article-body .student-story {
  background: #f0f4ff;
  border-radius: 12px;
  padding: 24px 28px;
  margin: 32px 0;
  border-left: 4px solid #3b5bdb;
}
.article-body .student-story .country {
  font-size: 0.72rem;
  font-weight: 700;
  color: #3b5bdb;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 8px;
}
.article-body .student-story p {
  margin-bottom: 0;
  font-style: italic;
  color: #2c3e70;
  font-size: 0.95rem;
}

/* Tip box */
.article-body .tip-box {
  background: #f6fff8;
  border: 1px solid #b2dfdb;
  border-radius: 10px;
  padding: 20px 24px;
  margin: 28px 0;
}

/* Section divider */
.article-body .section-divider {
  text-align: center;
  color: var(--color-border);
  font-size: 1.4rem;
  letter-spacing: 0.5em;
  margin: 48px 0;
}

/* ── Pairs table (hanja vs goyueo) ────────────────────────── */
.article-body .pairs-table {
  width: 100%;
  border-collapse: collapse;
  margin: 32px 0;
  font-size: 0.9rem;
  line-height: 1.5;
}
.article-body .pairs-table thead th {
  padding: 10px 14px;
  text-align: left;
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 2px solid var(--color-border);
  white-space: nowrap;
}
.article-body .pairs-table thead th.native-col { color: #1a7a3c; }
.article-body .pairs-table thead th.sino-col   { color: #1a4fa8; }
.article-body .pairs-table tbody tr {
  border-bottom: 1px solid #f0f0f0;
}
.article-body .pairs-table tbody tr:hover {
  background: #f8f8f8;
}
.article-body .pairs-table td {
  padding: 10px 14px;
  vertical-align: middle;
}
.article-body .pairs-table td:first-child {
  color: #666;
  font-size: 0.82rem;
  white-space: nowrap;
  width: 80px;
}
.article-body .pairs-table td.native-col {
  font-weight: 700;
  color: #1a7a3c;
  white-space: nowrap;
  width: 120px;
}
.article-body .pairs-table td.sino-col {
  font-weight: 700;
  color: #1a4fa8;
  white-space: nowrap;
  width: 130px;
}
.article-body .pairs-table td.kr {
  font-size: 1.05rem;
  font-family: 'Noto Sans KR', sans-serif;
}
.article-body .pairs-table td:last-child {
  color: #444;
  font-size: 0.85rem;
}
@media (max-width: 640px) {
  .article-body .pairs-table { font-size: 0.82rem; }
  .article-body .pairs-table td { padding: 8px 8px; }
  .article-body .pairs-table td:first-child { width: 60px; }
  .article-body .pairs-table td.native-col,
  .article-body .pairs-table td.sino-col { width: auto; }
  .article-body .pairs-table td:last-child { font-size: 0.78rem; }
}

/* ── Number use table ────────────────────────────────────── */
.article-body .number-use-table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0 32px;
  font-size: 0.9rem;
}
.article-body .number-use-table thead th {
  padding: 10px 14px;
  text-align: left;
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 2px solid var(--color-border);
  white-space: nowrap;
}
.article-body .number-use-table thead th.native-col { color: #1a7a3c; }
.article-body .number-use-table thead th.sino-col   { color: #1a4fa8; }
.article-body .number-use-table tbody tr {
  border-bottom: 1px solid #f0f0f0;
}
.article-body .number-use-table tbody tr:hover { background: #f8f8f8; }
.article-body .number-use-table td {
  padding: 9px 14px;
  vertical-align: middle;
}
.article-body .number-use-table td:first-child {
  color: #666;
  font-size: 0.82rem;
  white-space: nowrap;
  width: 120px;
}
.article-body .number-use-table td.native-col {
  font-weight: 600;
  color: #1a7a3c;
}
.article-body .number-use-table td.sino-col {
  font-weight: 600;
  color: #1a4fa8;
}
.article-body .number-use-table td.kr {
  font-family: 'Noto Sans KR', sans-serif;
  font-size: 1rem;
}
@media (max-width: 500px) {
  .article-body .number-use-table td { padding: 8px 8px; font-size: 0.82rem; }
}

/* ── Word-vs comparison cards ────────────────────────────── */
.article-body .word-vs {
  display: flex;
  align-items: stretch;
  gap: 0;
  margin: 32px 0;
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid var(--color-border);
}
.article-body .word-vs__card {
  flex: 1;
  padding: 24px 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.article-body .word-vs__card--native { background: #f0faf4; }
.article-body .word-vs__card--sino   { background: #f0f4fa; }
.article-body .word-vs__divider {
  display: flex;
  align-items: center;
  padding: 0 12px;
  font-weight: 700;
  color: #999;
  font-size: 0.85rem;
  background: #fff;
  border-left: 1px solid var(--color-border);
  border-right: 1px solid var(--color-border);
}
.article-body .word-vs__tag {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 4px;
}
.article-body .word-vs__tag--native { color: #1a7a3c; }
.article-body .word-vs__tag--sino   { color: #1a4fa8; }
.article-body .word-vs__korean {
  font-family: 'Noto Sans KR', sans-serif;
  font-size: 1.6rem;
  font-weight: 700;
  line-height: 1.2;
}
.article-body .word-vs__roman {
  font-size: 0.82rem;
  color: #666;
  font-style: italic;
}
.article-body .word-vs__feel {
  font-size: 0.85rem;
  color: #444;
  margin-top: 4px;
}
@media (max-width: 500px) {
  .article-body .word-vs { flex-direction: column; }
  .article-body .word-vs__divider {
    padding: 8px 16px;
    border-left: none;
    border-right: none;
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
  }
}

/* ── Hangul article components ────────────────────────────── */

/* Letter reveal cards */
.article-body .letter-reveal {
  background: white;
  border-radius: 14px;
  margin: 20px 0;
  box-shadow: 0 2px 12px rgba(0,0,0,0.07);
  border: 1px solid #e8e8e8;
  display: grid;
  grid-template-columns: 88px 1fr;
  grid-template-rows: auto auto auto;
  overflow: hidden;
}
.article-body .letter-reveal .letter {
  font-size: 3.2rem;
  color: #059669;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #f0fdf4;
  grid-row: 1 / 4;
  font-family: 'Noto Sans KR', sans-serif;
  border-right: 1px solid #d1fae5;
}
.article-body .letter-reveal .sound {
  font-size: 0.9rem;
  font-weight: 700;
  color: #0d0d1a;
  padding: 18px 20px 4px;
}
.article-body .letter-reveal .explanation {
  font-size: 0.85rem;
  color: #555;
  line-height: 1.6;
  padding: 0 20px;
}
.article-body .letter-reveal .mnemonic {
  font-size: 0.82rem;
  background: #f0fdf4;
  border-top: 1px solid #d1fae5;
  padding: 10px 20px;
  color: #166534;
  grid-column: 1 / -1;
}
@media (max-width: 480px) {
  .article-body .letter-reveal { grid-template-columns: 70px 1fr; }
  .article-body .letter-reveal .letter { font-size: 2.6rem; }
}

/* Letter grid (consonant derivation) */
.article-body .letter-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 12px;
  margin: 24px 0;
}
.article-body .letter-card {
  background: white;
  border-radius: 12px;
  padding: 20px 14px;
  text-align: center;
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
  border: 1px solid #e8e8e8;
  border-top: 3px solid #059669;
}
.article-body .letter-card .lc-letter {
  font-size: 2rem;
  color: #059669;
  display: block;
  margin-bottom: 6px;
  font-family: 'Noto Sans KR', sans-serif;
  font-weight: 700;
}
.article-body .letter-card .lc-sound { font-size: 0.78rem; font-weight: 700; color: #333; margin-bottom: 4px; }
.article-body .letter-card .lc-hint { font-size: 0.72rem; color: #888; line-height: 1.4; }

/* Try-it box */
.article-body .try-it {
  background: #f0fdf4;
  border: 2px solid #059669;
  border-radius: 12px;
  padding: 20px 24px;
  margin: 28px 0;
}
.article-body .try-it .ti-label {
  font-size: 11px;
  font-weight: 700;
  color: #059669;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 10px;
}
.article-body .try-it p { margin-bottom: 0; color: #166534; font-size: 0.92rem; }

/* Syllable demo */
.article-body .syllable-demo {
  background: white;
  border-radius: 14px;
  padding: 32px;
  margin: 28px 0;
  box-shadow: 0 4px 16px rgba(0,0,0,0.06);
  text-align: center;
  border: 1px solid #e8e8e8;
}
.article-body .syllable-demo .parts {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}
.article-body .syllable-demo .part {
  font-size: 2.6rem;
  color: #059669;
  font-family: 'Noto Sans KR', sans-serif;
  background: #f0fdf4;
  border-radius: 8px;
  padding: 6px 14px;
  line-height: 1.3;
}
.article-body .syllable-demo .plus,
.article-body .syllable-demo .equals { font-size: 1.6rem; color: #ccc; font-weight: 300; }
.article-body .syllable-demo .result {
  font-size: 4rem;
  color: #059669;
  font-weight: 700;
  font-family: 'Noto Sans KR', sans-serif;
  background: #f0fdf4;
  border-radius: 8px;
  padding: 6px 20px;
  line-height: 1.3;
}
.article-body .syllable-demo .label { font-size: 0.75rem; color: #888; margin-top: 6px; }

/* Vowel table */
.article-body .vowel-table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0 28px;
  font-size: 0.9rem;
}
.article-body .vowel-table th {
  background: #047857;
  color: white;
  padding: 10px 14px;
  text-align: center;
  font-size: 0.76rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.article-body .vowel-table td {
  padding: 10px 14px;
  border-bottom: 1px solid #f0f0f0;
  background: white;
  text-align: center;
}
.article-body .vowel-table tbody tr:hover { background: #f8fffe; }
.article-body .vowel-table .kr { font-size: 1.6rem; color: #059669; font-family: 'Noto Sans KR', sans-serif; }

/* Comparison table */
.article-body .comparison-table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 0.88rem;
}
.article-body .comparison-table th {
  background: #0d0d1a;
  color: white;
  padding: 12px 16px;
  text-align: left;
  font-size: 0.76rem;
  letter-spacing: 0.05em;
  font-weight: 700;
  text-transform: uppercase;
}
.article-body .comparison-table td {
  padding: 12px 16px;
  border-bottom: 1px solid #eee;
  background: white;
  vertical-align: middle;
}
.article-body .comparison-table tbody tr:hover td { background: #f8f8f8; }
.article-body .comparison-table tr:last-child td {
  background: #f0fdf4;
  font-weight: 600;
  color: #059669;
}

/* Myth boxes */
.article-body .myth-box {
  border-radius: 12px;
  margin: 24px 0;
  overflow: hidden;
  border: 1px solid #fca5a5;
}
.article-body .myth-box .myth-label {
  font-size: 11px;
  font-weight: 700;
  color: #dc2626;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 12px 20px 0;
  background: #fff8f8;
}
.article-body .myth-box .myth-label::before { content: "✗  "; }
.article-body .myth-box p {
  margin: 0;
  font-size: 0.92rem;
  color: #7f1d1d;
  padding: 6px 20px 16px;
  background: #fff8f8;
}
.article-body .myth-box .truth {
  font-size: 11px;
  font-weight: 700;
  color: #059669;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 12px 20px 0;
  background: #f0fdf4;
  border-top: 1px solid #d1fae5;
}
.article-body .myth-box .truth::before { content: "✓  "; }
.article-body .myth-box .truth-text {
  color: #166534;
  font-size: 0.88rem;
  margin: 0;
  padding: 6px 20px 16px;
  background: #f0fdf4;
}

/* Quiz items (word showcase) */
.article-body .quiz-item {
  background: white;
  border-radius: 12px;
  padding: 16px 20px;
  margin: 12px 0;
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
  display: flex;
  align-items: center;
  gap: 18px;
  border: 1px solid #e8e8e8;
}
.article-body .quiz-item .korean {
  font-size: 2rem;
  color: #059669;
  min-width: 72px;
  text-align: center;
  font-family: 'Noto Sans KR', sans-serif;
  font-weight: 700;
  background: #f0fdf4;
  border-radius: 8px;
  padding: 6px 10px;
  flex-shrink: 0;
}
.article-body .quiz-item .meaning { color: #333; line-height: 1.5; }
.article-body .quiz-item .meaning strong { display: block; font-size: 1rem; color: #0d0d1a; margin-bottom: 2px; }
.article-body .quiz-item .meaning span { font-size: 0.82rem; color: #888; }

/* Step boxes */
.article-body .step-box {
  background: white;
  border-radius: 12px;
  padding: 20px 22px;
  margin: 14px 0;
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
  display: flex;
  gap: 16px;
  border: 1px solid #e8e8e8;
}
.article-body .step-box .step-num {
  width: 36px;
  height: 36px;
  background: #059669;
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1rem;
  flex-shrink: 0;
  margin-top: 2px;
}
.article-body .step-box .step-content h4 { font-weight: 700; margin-bottom: 4px; color: #0d0d1a; font-size: 0.95rem; }
.article-body .step-box .step-content p { margin-bottom: 0; font-size: 0.87rem; color: #555; line-height: 1.6; }

/* Big moment callout */
.article-body .big-moment {
  background: linear-gradient(135deg, #059669, #047857);
  color: white;
  border-radius: 14px;
  padding: 32px 36px;
  margin: 36px 0;
  text-align: center;
}
.article-body .big-moment .bm-text { font-size: 1.4rem; font-weight: 700; line-height: 1.4; margin-bottom: 10px; }
.article-body .big-moment .bm-sub { font-size: 0.88rem; opacity: 0.85; }

/* CTA box */
.article-body .cta-box {
  background: linear-gradient(135deg, #0d0d1a, #1e1e3f);
  color: white;
  border-radius: 16px;
  padding: 44px 36px;
  margin: 48px 0 32px;
  text-align: center;
}
.article-body .cta-box h3 {
  color: white !important;
  font-size: 1.5rem;
  font-weight: 700;
  text-transform: none !important;
  letter-spacing: 0 !important;
  margin-bottom: 12px !important;
  margin-top: 0 !important;
}
.article-body .cta-box p { color: rgba(255,255,255,0.75); margin-bottom: 24px; font-size: 0.95rem; }
.article-body .cta-box .cta-link {
  display: inline-block;
  background: #059669;
  color: white;
  padding: 12px 28px;
  border-radius: 8px;
  font-weight: 700;
  font-size: 0.95rem;
  text-decoration: none;
}
.article-body .cta-box .cta-link:hover { background: #047857; }

/* Hangul article quiz */
.article-body .hangul-quiz {
  background: #f8f7ff;
  border-radius: 16px;
  padding: 36px 40px;
  margin: 48px 0;
  border: 1px solid #e8e6ff;
}
.article-body .hangul-quiz .hq-title {
  font-size: 0.75rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: #059669;
  margin-bottom: 6px;
}
.article-body .hangul-quiz .hq-heading { font-size: 1.25rem; font-weight: 700; color: #0d0d1a; margin-bottom: 6px; }
.article-body .hangul-quiz .hq-sub { font-size: 0.87rem; color: #666; margin-bottom: 28px; }
.article-body .hangul-quiz .hq-q {
  margin-bottom: 24px;
  padding-bottom: 24px;
  border-bottom: 1px solid #e8e6ff;
}
.article-body .hangul-quiz .hq-q:last-child { border-bottom: none; margin-bottom: 0; padding-bottom: 0; }
.article-body .hangul-quiz .hq-q__text { font-size: 0.93rem; font-weight: 700; color: #2C2420; margin-bottom: 8px; }
.article-body .hangul-quiz .hq-q__kr {
  font-family: 'Noto Sans KR', sans-serif;
  font-size: 1.05rem;
  color: #374151;
  margin-bottom: 10px;
  line-height: 1.7;
}
.article-body .hangul-quiz details summary {
  font-size: 0.8rem;
  font-weight: 600;
  color: #059669;
  cursor: pointer;
  padding: 6px 0;
  list-style: none;
}
.article-body .hangul-quiz details summary::-webkit-details-marker { display: none; }
.article-body .hangul-quiz details summary::before { content: "▶  Show answer"; }
.article-body .hangul-quiz details[open] summary::before { content: "▼  Hide answer"; }
.article-body .hangul-quiz details .hq-answer {
  font-size: 0.875rem;
  background: white;
  border-left: 3px solid #059669;
  padding: 10px 14px;
  margin-top: 8px;
  border-radius: 0 8px 8px 0;
  color: #166534;
  line-height: 1.6;
}
.article-body .hangul-quiz details .hq-answer strong { font-family: 'Noto Sans KR', sans-serif; font-size: 1rem; }
@media (max-width: 640px) { .article-body .hangul-quiz { padding: 24px 20px; } }

/* ── Shared article components (transitive, question-words, hanja) ───── */
.article-body .kr { font-family: 'Noto Sans KR', sans-serif; font-size: 1.05em; }

/* Verb / word pair table */
.article-body .pair-table {
  width: 100%; border-collapse: collapse; margin: 1.75rem 0;
  font-size: 0.9rem; border-radius: 10px; overflow: hidden;
  box-shadow: 0 2px 8px rgba(0,0,0,0.07);
}
.article-body .pair-table th {
  background: #2C2420; color: #fff; padding: 12px 16px; text-align: left;
  font-family: 'Nunito', sans-serif; font-weight: 600;
  font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.08em;
}
.article-body .pair-table td {
  padding: 11px 16px; border-bottom: 1px solid #f0f0f0; vertical-align: middle;
  font-family: 'Noto Sans KR', sans-serif; font-size: 1rem; color: #1a1a2e;
}
.article-body .pair-table td:last-child { font-family: 'Nunito', sans-serif; font-size: 0.85rem; color: #6b7280; }
.article-body .pair-table tr:last-child td { border-bottom: none; }
.article-body .pair-table tr:hover td { background: #f5f6ff; }
@media (max-width: 540px) { .article-body .pair-table td { padding: 9px 12px; font-size: 0.92rem; } }

/* Sentence pair comparison card */
.article-body .sent-pair {
  margin: 1.75rem 0; border-radius: 12px; overflow: hidden;
  border: 1px solid #e5e7eb; box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}
.article-body .sent-pair__label {
  background: #f8f9fa; padding: 8px 16px; border-bottom: 1px solid #e5e7eb;
  font-family: 'Nunito', sans-serif; font-size: 0.7rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.1em; color: #c0392b;
}
.article-body .sent-pair__row {
  display: flex; align-items: baseline; flex-wrap: wrap;
  gap: 6px 14px; padding: 14px 16px;
}
.article-body .sent-pair__row + .sent-pair__row { border-top: 1px solid #e5e7eb; }
.article-body .sent-pair__row--tr  { background: #eff6ff; border-left: 3px solid #2563eb; }
.article-body .sent-pair__row--int { background: #f0fdf4; border-left: 3px solid #16a34a; }
.article-body .sent-pair__tag {
  font-family: 'Nunito', sans-serif; font-size: 0.66rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.07em;
  min-width: 82px; flex-shrink: 0; padding-top: 3px;
}
.article-body .sent-pair__tag--tr  { color: #1d4ed8; }
.article-body .sent-pair__tag--int { color: #15803d; }
.article-body .sent-pair__kr { font-family: 'Noto Sans KR', sans-serif; font-size: 1.05rem; color: #1a1a2e; }
.article-body .sent-pair__kr strong { color: #c0392b; }
.article-body .sent-pair__en { font-size: 0.82rem; color: #6b7280; align-self: center; }
@media (max-width: 480px) {
  .article-body .sent-pair__tag { min-width: 0; width: 100%; }
  .article-body .sent-pair__row { gap: 3px 10px; }
}

/* Example card */
.article-body .ex-card {
  background: #f9fafb; border-radius: 10px; padding: 14px 18px;
  margin: 1.25rem 0; display: flex; flex-direction: column; gap: 9px;
  border-left: 3px solid #c0392b;
}
.article-body .ex-card__row { display: flex; align-items: baseline; flex-wrap: wrap; gap: 4px 14px; }
.article-body .ex-card__kr { font-family: 'Noto Sans KR', sans-serif; font-size: 1.05rem; color: #1a1a2e; }
.article-body .ex-card__en { font-size: 0.82rem; color: #6b7280; }

/* Suffix grid */
.article-body .suffix-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 0.75rem; margin: 1.5rem 0;
}
.article-body .suffix-card {
  background: #fff; border-radius: 10px; padding: 1rem 1.1rem;
  border: 1px solid #e0e7ff; border-left: 3px solid #3730a3;
  box-shadow: 0 1px 4px rgba(0,0,0,0.05);
}
.article-body .suffix-card .sfx {
  font-size: 1.1rem; font-weight: 700; color: #3730a3; display: block;
  margin-bottom: 0.4rem; font-family: 'Noto Sans KR', sans-serif;
}
.article-body .suffix-card .sfx-ex { color: #4b5563; font-family: 'Noto Sans KR', sans-serif; font-size: 0.82rem; line-height: 1.8; }

/* Tip box (amber variant) */
.article-body .tip-box.amber {
  background: #fffbeb; border: 1px solid #fcd34d; border-left: 3px solid #f59e0b;
  border-radius: 10px; padding: 1rem 1.25rem; margin: 1.75rem 0;
}
.article-body .tip-box.amber .tip-label {
  font-family: 'Nunito', sans-serif; font-size: 0.7rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.1em; color: #92400e;
  margin-bottom: 0.4rem; display: block;
}

/* ── 한자어 vs 고유어 article ──────────────────────────────── */

/* Vocabulary layer diagram */
.article-body .vocab-layers { margin: 2rem 0; display: flex; flex-direction: column; gap: 0.5rem; }
.article-body .vocab-layer {
  border-radius: 10px; padding: 0.875rem 1.25rem;
  display: flex; align-items: center; gap: 1rem; flex-wrap: wrap;
}
.article-body .vocab-layer--native { background: #f0fdf4; border: 1px solid #bbf7d0; }
.article-body .vocab-layer--sino   { background: #eff6ff; border: 1px solid #bfdbfe; }
.article-body .vocab-layer--loan   { background: #fef3c7; border: 1px solid #fde68a; }
.article-body .vocab-layer__pct {
  font-family: 'Nunito', sans-serif; font-size: 1.4rem; font-weight: 800;
  min-width: 56px; text-align: center; flex-shrink: 0;
}
.article-body .vocab-layer--native .vocab-layer__pct { color: #16a34a; }
.article-body .vocab-layer--sino   .vocab-layer__pct { color: #2563eb; }
.article-body .vocab-layer--loan   .vocab-layer__pct { color: #d97706; }
.article-body .vocab-layer__name { font-family: 'Nunito', sans-serif; font-size: 0.875rem; font-weight: 700; color: #1a1a2e; }
.article-body .vocab-layer__desc { font-family: 'Nunito', sans-serif; font-size: 0.8rem; color: #6b7280; margin-top: 1px; }
.article-body .vocab-layer__ex { margin-left: auto; font-family: 'Noto Sans KR', sans-serif; font-size: 0.85rem; color: #374151; text-align: right; }
@media (max-width: 520px) { .article-body .vocab-layer__ex { margin-left: 0; text-align: left; width: 100%; padding-left: 56px; } }

/* 한자 root cards */
.article-body .hanja-root-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem; margin: 1.75rem 0;
}
.article-body .hanja-root-card {
  border-radius: 12px; overflow: hidden;
  border: 1px solid #e0e7ff; box-shadow: 0 2px 8px rgba(0,0,0,0.07);
}
.article-body .hanja-root-card__header {
  background: #2C2420; padding: 0.875rem 1.1rem;
  display: flex; align-items: center; gap: 0.875rem;
}
.article-body .hanja-root-card__char {
  font-family: 'Noto Sans KR', sans-serif;
  font-size: 2.2rem; font-weight: 700; line-height: 1; color: #fff;
}
.article-body .hanja-root-card__kr { font-family: 'Noto Sans KR', sans-serif; font-size: 1rem; font-weight: 700; color: #fff; }
.article-body .hanja-root-card__meaning { font-family: 'Nunito', sans-serif; font-size: 0.78rem; color: #a5b4fc; margin-top: 2px; }
.article-body .hanja-root-card__words { padding: 0.875rem 1.1rem; background: #fff; display: flex; flex-direction: column; gap: 5px; }
.article-body .hanja-root-card__word { display: flex; align-items: baseline; gap: 8px; }
.article-body .hanja-root-card__word-kr { font-family: 'Noto Sans KR', sans-serif; font-size: 0.95rem; font-weight: 600; color: #2C2420; }
.article-body .hanja-root-card__word-en { font-family: 'Nunito', sans-serif; font-size: 0.78rem; color: #6b7280; }

/* Register comparison table */
.article-body .register-table {
  width: 100%; border-collapse: collapse; margin: 1.75rem 0;
  font-size: 0.9rem; border-radius: 10px; overflow: hidden;
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}
.article-body .register-table th {
  padding: 11px 16px; text-align: left;
  font-family: 'Nunito', sans-serif; font-weight: 700;
  font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.08em;
}
.article-body .register-table th:first-child { background: #f3f4f6; color: #6b7280; border-bottom: 2px solid #e5e7eb; }
.article-body .register-table th.th-native { background: #f0fdf4; color: #15803d; border-bottom: 2px solid #16a34a; }
.article-body .register-table th.th-sino   { background: #eff6ff; color: #1d4ed8; border-bottom: 2px solid #2563eb; }
.article-body .register-table td { padding: 10px 16px; border-bottom: 1px solid #f0f0f0; vertical-align: middle; }
.article-body .register-table td:first-child { font-family: 'Nunito', sans-serif; font-size: 0.82rem; color: #374151; background: #fafafa; font-weight: 600; }
.article-body .register-table td.td-native { font-family: 'Noto Sans KR', sans-serif; font-size: 1rem; color: #15803d; background: #f7fef9; }
.article-body .register-table td.td-sino   { font-family: 'Noto Sans KR', sans-serif; font-size: 1rem; color: #1d4ed8; background: #f0f7ff; }
.article-body .register-table tr:last-child td { border-bottom: none; }

/* Number system split cards */
.article-body .num-system-split { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin: 1.75rem 0; }
.article-body .num-system-card { border-radius: 12px; overflow: hidden; border: 1px solid #e5e7eb; box-shadow: 0 2px 6px rgba(0,0,0,0.05); }
.article-body .num-system-card__header { padding: 0.875rem 1.1rem; font-family: 'Nunito', sans-serif; font-weight: 700; font-size: 0.85rem; border-bottom: 1px solid; }
.article-body .num-system-card--native .num-system-card__header { background: #f0fdf4; color: #15803d; border-bottom-color: #bbf7d0; }
.article-body .num-system-card--sino   .num-system-card__header { background: #eff6ff; color: #1d4ed8; border-bottom-color: #bfdbfe; }
.article-body .num-system-card__nums { font-family: 'Noto Sans KR', sans-serif; font-size: 1rem; font-weight: 700; padding: 0.875rem 1.1rem 0.4rem; color: #1a1a2e; line-height: 1.7; }
.article-body .num-system-card__uses { padding: 0.4rem 1.1rem 1rem; list-style: none; margin: 0; font-family: 'Nunito', sans-serif; font-size: 0.82rem; color: #374151; line-height: 1.8; }
.article-body .num-system-card__uses li::before { content: "→ "; opacity: 0.4; }
@media (max-width: 480px) { .article-body .num-system-split { grid-template-columns: 1fr; } }

/* Inline register tag */
.article-body .tag-native { display: inline-block; background: #dcfce7; color: #15803d; font-family: 'Nunito', sans-serif; font-size: 0.65rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.07em; padding: 1px 7px; border-radius: 99px; vertical-align: middle; }
.article-body .tag-sino   { display: inline-block; background: #dbeafe; color: #1d4ed8; font-family: 'Nunito', sans-serif; font-size: 0.65rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.07em; padding: 1px 7px; border-radius: 99px; vertical-align: middle; }

/* ── Transitive / Intransitive concept cards ─────────────── */
.article-body .verb-concept-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin: 1.75rem 0;
}
.article-body .verb-concept {
  border-radius: 12px; overflow: hidden;
  box-shadow: 0 2px 8px rgba(0,0,0,0.08);
  display: flex; flex-direction: column;
}
.article-body .verb-concept__header {
  padding: 1rem 1.25rem 0.75rem;
  display: flex; align-items: center; gap: 0.75rem;
}
.article-body .verb-concept--tr  .verb-concept__header { background: #1d4ed8; }
.article-body .verb-concept--int .verb-concept__header { background: #15803d; }
.article-body .verb-concept__label {
  font-family: 'Nunito', sans-serif; font-size: 0.7rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.1em; color: rgba(255,255,255,0.75);
}
.article-body .verb-concept__particle {
  font-family: 'Noto Sans KR', sans-serif; font-size: 1.5rem; font-weight: 800;
  color: #fff; line-height: 1;
}
.article-body .verb-concept__body { padding: 0.875rem 1.25rem; background: #fff; border: 1px solid #e5e7eb; border-top: none; border-radius: 0 0 12px 12px; flex: 1; }
.article-body .verb-concept__rule {
  font-family: 'Nunito', sans-serif; font-size: 0.85rem; font-weight: 600; color: #1a1a2e;
  margin-bottom: 0.5rem;
}
.article-body .verb-concept__ex {
  font-family: 'Noto Sans KR', sans-serif; font-size: 0.95rem; color: #374151; line-height: 1.8;
}
.article-body .verb-concept__ex strong { color: #c0392b; }
@media (max-width: 480px) { .article-body .verb-concept-grid { grid-template-columns: 1fr; } }

/* ── Conjunction variant (amber) for verb-concept-grid ───── */
.article-body .verb-concept--conj .verb-concept__header { background: #92400e; }

/* ── Formality spectrum strip (3-column: formal → casual) ── */
.article-body .formality-strip {
  display: grid; grid-template-columns: repeat(3, 1fr);
  border-radius: 12px; overflow: hidden;
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
  margin: 1.75rem 0;
}
.article-body .formality-strip__cell { padding: 1.1rem 1rem; text-align: center; }
.article-body .formality-strip__cell--1 { background: #2C2420; }
.article-body .formality-strip__cell--2 { background: #4338ca; }
.article-body .formality-strip__cell--3 { background: #818cf8; }
.article-body .formality-strip__badge {
  font-family: 'Nunito', sans-serif; font-size: 0.65rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.08em; color: rgba(255,255,255,0.6);
  margin-bottom: 0.35rem;
}
.article-body .formality-strip__particle {
  font-family: 'Noto Sans KR', sans-serif; font-size: 1.3rem; font-weight: 800;
  color: #fff; line-height: 1.2; margin-bottom: 0.35rem;
}
.article-body .formality-strip__desc {
  font-family: 'Nunito', sans-serif; font-size: 0.72rem; color: rgba(255,255,255,0.82);
  line-height: 1.45;
}
.article-body .formality-strip__axis {
  display: flex; justify-content: space-between;
  font-family: 'Nunito', sans-serif; font-size: 0.7rem; color: #9ca3af;
  padding: 0.3rem 0.1rem 0; margin-top: 0.2rem;
}
@media (max-width: 480px) { .article-body .formality-strip { grid-template-columns: 1fr; } }