/* ═══════════════════════════════════════════════════════════════════
   Hemacandra's Śabdānuśāsana — Shared Stylesheet v2
   Haimavyākaraṇa Digitization Project
   ═══════════════════════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Cinzel:wght@400;500;600&family=Cormorant+Garamond:ital,wght@0,400;0,500;0,600;1,400;1,600&family=Crimson+Pro:ital,wght@0,400;0,500;1,400&family=Noto+Serif+Devanagari:wght@400;500;600&display=swap');

/* ── Design Tokens ──────────────────────────────────────────────── */
:root {
  /* Core palette */
  --clr-parchment:    #f6ead0;
  --clr-parchment-dk: #ecdec0;
  --clr-surface:      #fdf8ef;
  --clr-surface-dk:   #f4ead6;

  /* Brand */
  --clr-primary:    #7a2d10;
  --clr-primary-dk: #4e1a07;
  --clr-primary-lt: #a64222;

  /* Gold accents */
  --clr-gold:       #b87a22;
  --clr-gold-lt:    #d4a040;
  --clr-gold-pale:  #e8c878;

  /* Indigo accent (for header gradient) */
  --clr-indigo:     #1a1040;
  --clr-indigo-mid: #2a1840;

  /* Text */
  --clr-ink:        #1c0d04;
  --clr-ink-mid:    #5a3920;
  --clr-ink-muted:  #8a6840;
  --clr-ink-faint:  #b89870;

  /* Borders */
  --clr-border:       rgba(140, 100, 40, 0.22);
  --clr-border-lt:    rgba(140, 100, 40, 0.12);
  --clr-border-gold:  rgba(184, 122, 34, 0.35);

  /* Shadows */
  --shadow-sm:  0 1px 4px rgba(80, 40, 10, 0.10);
  --shadow-md:  0 4px 20px rgba(80, 40, 10, 0.13);
  --shadow-lg:  0 10px 40px rgba(80, 40, 10, 0.16);
  --shadow-glow: 0 0 0 3px rgba(184, 122, 34, 0.18);

  /* Typography */
  --font-title:   'Cinzel', 'Cormorant Garamond', Georgia, serif;
  --font-display: 'Cormorant Garamond', Georgia, serif;
  --font-roman:   'Crimson Pro', 'Georgia', serif;
  --font-dev:     'Noto Serif Devanagari', serif;
  --font-ui:      'Crimson Pro', Georgia, serif;

  /* Radii */
  --r-sm:  6px;
  --r-md:  12px;
  --r-lg:  20px;
  --r-xl:  28px;

  /* Spacing */
  --nav-h:    60px;
  --bar-h:    68px;
  --content-max: 760px;
}

/* ── Reset ──────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-ui);
  font-size: 18px;
  line-height: 1.7;
  color: var(--clr-ink);
  background-color: var(--clr-parchment);
  /* Layered parchment texture */
  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='0.75' numOctaves='4' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='200' height='200' filter='url(%23n)' opacity='0.035'/%3E%3C/svg%3E"),
    radial-gradient(ellipse at 10% 10%, rgba(190, 140, 50, 0.09) 0%, transparent 55%),
    radial-gradient(ellipse at 90% 85%, rgba(130, 60, 15, 0.07) 0%, transparent 50%),
    radial-gradient(ellipse at 55% 45%, rgba(210, 170, 80, 0.05) 0%, transparent 70%);
  min-height: 100vh;
}

a { color: var(--clr-primary); text-decoration: none; }
a:hover { color: var(--clr-primary-lt); text-decoration: underline; }

button {
  font-family: var(--font-ui);
  cursor: pointer;
  border: none;
  background: none;
}

/* ═══════════════════════════════════════════════════════════════════
   PAGE HEADER — Hero
   ═══════════════════════════════════════════════════════════════════ */

.page-hero {
  position: relative;
  overflow: hidden;
  background:
    linear-gradient(155deg,
      var(--clr-primary-dk) 0%,
      #2e1230 38%,
      var(--clr-indigo) 72%,
      #0e1830 100%);
  color: #f5e8cc;
  text-align: center;
  padding: 40px 24px 36px;
  /* Subtle diamond grid overlay */
  background-image:
    url("data:image/svg+xml,%3Csvg width='40' height='40' viewBox='0 0 40 40' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M20 2L38 20L20 38L2 20Z' fill='none' stroke='%23ffffff' stroke-width='0.4' stroke-opacity='0.08'/%3E%3C/svg%3E"),
    linear-gradient(155deg,
      var(--clr-primary-dk) 0%,
      #2e1230 38%,
      var(--clr-indigo) 72%,
      #0e1830 100%);
}

.page-hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg,
    transparent 0%,
    var(--clr-gold) 20%,
    var(--clr-gold-pale) 50%,
    var(--clr-gold) 80%,
    transparent 100%);
  opacity: 0.75;
}

.hero-dev-title {
  font-family: var(--font-dev);
  font-size: clamp(1.1rem, 3.5vw, 1.5rem);
  font-weight: 400;
  color: rgba(245, 232, 200, 0.55);
  letter-spacing: 0.04em;
  margin-bottom: 8px;
}

.hero-title {
  font-family: var(--font-title);
  font-size: clamp(1.5rem, 5vw, 2.4rem);
  font-weight: 500;
  letter-spacing: 0.04em;
  line-height: 1.2;
  color: #f8eed8;
}

.hero-rule {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin: 14px auto;
  max-width: 300px;
}

.hero-rule::before,
.hero-rule::after {
  content: '';
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(212, 160, 64, 0.5));
}
.hero-rule::after { transform: scaleX(-1); }

.hero-rule-gem {
  width: 7px;
  height: 7px;
  background: var(--clr-gold-lt);
  transform: rotate(45deg);
  opacity: 0.7;
  flex-shrink: 0;
}

.hero-subtitle {
  font-family: var(--font-display);
  font-style: italic;
  font-size: clamp(0.85rem, 2.5vw, 1.05rem);
  color: rgba(245, 232, 200, 0.62);
  letter-spacing: 0.02em;
}

/* ═══════════════════════════════════════════════════════════════════
   CONTROLS BAR (sticky)
   ═══════════════════════════════════════════════════════════════════ */

.controls-bar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--clr-surface);
  border-bottom: 1px solid var(--clr-border);
  padding: 12px 16px 10px;
  display: flex;
  flex-direction: column;
  gap: 9px;
  box-shadow: 0 2px 16px rgba(80, 40, 10, 0.10);
}

.controls-row {
  display: flex;
  align-items: center;
  gap: 10px;
}

/* ── Search ───────────────────────────────────────────────────────── */
.search-wrap {
  flex: 1;
  position: relative;
}

.search-wrap .search-icon {
  position: absolute;
  left: 13px;
  top: 50%;
  transform: translateY(-50%);
  width: 16px;
  height: 16px;
  color: var(--clr-ink-faint);
  pointer-events: none;
  transition: color 0.2s;
}

.search-wrap:focus-within .search-icon { color: var(--clr-gold); }

#sutra-search {
  width: 100%;
  padding: 10px 14px 10px 38px;
  border: 1.5px solid var(--clr-border);
  border-radius: var(--r-xl);
  background: var(--clr-surface);
  font-family: var(--font-ui);
  font-size: 1rem;
  color: var(--clr-ink);
  transition: border-color 0.2s, box-shadow 0.2s;
}

#sutra-search:focus {
  outline: none;
  border-color: var(--clr-gold);
  box-shadow: var(--shadow-glow);
}

#sutra-search::placeholder {
  color: var(--clr-ink-faint);
  font-style: italic;
}

.search-clear {
  position: absolute;
  right: 10px;
  top: 50%;
  transform: translateY(-50%);
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--clr-parchment-dk);
  border: none;
  color: var(--clr-ink-muted);
  font-size: 0.85rem;
  display: none;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background 0.15s;
}

.search-clear:hover { background: var(--clr-border); }
.search-wrap.has-value .search-clear { display: flex; }

/* ── Script Toggle ────────────────────────────────────────────────── */
.script-toggle {
  display: inline-flex;
  background: var(--clr-parchment-dk);
  border: 1.5px solid var(--clr-border);
  border-radius: 999px;
  padding: 3px;
  gap: 2px;
  flex-shrink: 0;
}

.script-toggle button {
  padding: 5px 12px;
  border-radius: 999px;
  font-family: var(--font-roman);
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--clr-ink-muted);
  letter-spacing: 0.04em;
  transition: background 0.15s, color 0.15s;
  white-space: nowrap;
}

.script-toggle button.active {
  background: var(--clr-primary);
  color: #f5e8cc;
  box-shadow: 0 1px 4px rgba(122, 45, 16, 0.25);
}

.script-toggle button:hover:not(.active) {
  background: var(--clr-border-lt);
  color: var(--clr-ink);
}

/* ── Pāda / Adhyāya Tabs ──────────────────────────────────────────── */
.pada-tabs {
  display: flex;
  gap: 5px;
  flex-wrap: wrap;
  flex: 1;
}

.pada-tabs button {
  padding: 6px 14px;
  border-radius: var(--r-sm);
  font-family: var(--font-roman);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--clr-ink-mid);
  border: 1.5px solid var(--clr-border);
  background: transparent;
  transition: all 0.15s;
  letter-spacing: 0.01em;
}

.pada-tabs button.active {
  background: var(--clr-primary);
  color: #f5e8cc;
  border-color: var(--clr-primary);
  box-shadow: var(--shadow-sm);
}

.pada-tabs button:hover:not(.active) {
  background: var(--clr-parchment-dk);
  border-color: var(--clr-gold);
  color: var(--clr-primary);
}

/* Result count */
.result-count {
  font-size: 0.78rem;
  font-family: var(--font-roman);
  color: var(--clr-ink-faint);
  white-space: nowrap;
  letter-spacing: 0.02em;
}

/* ═══════════════════════════════════════════════════════════════════
   SUTRA LIST
   ═══════════════════════════════════════════════════════════════════ */

.sutra-list {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 0 0 100px;
}

/* Chapter / Pāda group divider */
.pada-divider {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px 20px 8px;
  border-top: 1px solid var(--clr-border-lt);
  margin-top: 6px;
}

.pada-divider:first-child { border-top: none; }

.pada-divider-label {
  font-family: var(--font-title);
  font-size: 0.88rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--clr-primary);
  text-transform: uppercase;
  white-space: nowrap;
}

.pada-divider-count {
  font-family: var(--font-roman);
  font-size: 0.75rem;
  color: var(--clr-ink-faint);
}

.pada-divider-line {
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, var(--clr-border), transparent);
}

/* Sutra item */
.sutra-item {
  display: flex;
  align-items: baseline;
  gap: 0;
  padding: 12px 20px 12px 16px;
  border-bottom: 1px solid var(--clr-border-lt);
  cursor: pointer;
  text-decoration: none;
  color: inherit;
  position: relative;
  transition: background 0.13s;
}

.sutra-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: transparent;
  border-radius: 0 3px 3px 0;
  transition: background 0.15s;
}

.sutra-item:hover {
  background: rgba(180, 122, 34, 0.06);
  text-decoration: none;
}

.sutra-item:hover::before {
  background: var(--clr-gold);
}

.sutra-item:active { background: rgba(180, 122, 34, 0.1); }

.sutra-item-ref {
  font-family: var(--font-roman);
  font-size: 0.73rem;
  color: var(--clr-ink-faint);
  white-space: nowrap;
  flex-shrink: 0;
  min-width: 62px;
  padding-right: 12px;
  letter-spacing: 0.02em;
  padding-top: 2px;
}

[data-script="Devanagari"] .sutra-item-ref {
  font-family: var(--font-dev);
  font-size: 0.68rem;
  letter-spacing: 0;
}

.sutra-item-text {
  flex: 1;
  font-family: var(--font-dev);
  font-size: 1rem;
  line-height: 1.55;
  color: var(--clr-ink);
  word-break: break-word;
}

[data-script="IAST"] .sutra-item-text,
[data-script="ISO15919"] .sutra-item-text {
  font-family: var(--font-roman);
  font-style: italic;
  font-size: 1rem;
}

[data-script="HK"] .sutra-item-text {
  font-family: var(--font-roman);
  font-style: normal;
  font-size: 0.95rem;
  letter-spacing: 0.01em;
}

.sutra-item-arrow {
  color: var(--clr-border);
  flex-shrink: 0;
  font-size: 1.1rem;
  margin-left: 10px;
  align-self: center;
  transition: color 0.15s, transform 0.15s;
}

.sutra-item:hover .sutra-item-arrow {
  color: var(--clr-gold);
  transform: translateX(2px);
}

/* Search highlight */
mark {
  background: rgba(212, 160, 64, 0.28);
  color: inherit;
  border-radius: 2px;
  padding: 0 1px;
  font-style: inherit;
}

/* Empty / loading states */
.empty-state {
  padding: 60px 24px;
  text-align: center;
  color: var(--clr-ink-muted);
  font-style: italic;
  font-family: var(--font-display);
  font-size: 1.1rem;
}

.empty-icon {
  font-size: 2rem;
  opacity: 0.4;
  margin-bottom: 10px;
}

/* ═══════════════════════════════════════════════════════════════════
   SUTRA DETAIL PAGE
   ═══════════════════════════════════════════════════════════════════ */

/* Compact header for sutra page */
.sutra-page-header {
  background:
    linear-gradient(155deg,
      var(--clr-primary-dk) 0%,
      #2e1230 50%,
      var(--clr-indigo) 100%);
  color: rgba(245, 232, 200, 0.9);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  height: 54px;
  gap: 12px;
  box-shadow: 0 2px 12px rgba(30, 10, 4, 0.3);
}

.sutra-page-header .back-link {
  display: flex;
  align-items: center;
  gap: 6px;
  color: rgba(245, 232, 200, 0.72);
  font-family: var(--font-roman);
  font-size: 0.9rem;
  transition: color 0.15s;
  white-space: nowrap;
  flex-shrink: 0;
}

.sutra-page-header .back-link:hover {
  color: #f5e8cc;
  text-decoration: none;
}

.sutra-page-header .back-link svg {
  width: 15px;
  height: 15px;
}

.sutra-page-header .header-title {
  font-family: var(--font-dev);
  font-size: 0.9rem;
  text-align: center;
  flex: 1;
  color: rgba(245, 232, 200, 0.65);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.sutra-page-header .header-ref {
  font-family: var(--font-roman);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: rgba(245, 232, 200, 0.5);
  white-space: nowrap;
  flex-shrink: 0;
}

/* Script toggle on dark header */
#script-toggle-header .script-toggle {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.18);
}

#script-toggle-header .script-toggle button {
  color: rgba(245, 232, 200, 0.65);
  font-size: 0.72rem;
  padding: 4px 10px;
}

#script-toggle-header .script-toggle button.active {
  background: rgba(255, 255, 255, 0.2);
  color: #f5e8cc;
}

#script-toggle-header .script-toggle button:hover:not(.active) {
  background: rgba(255, 255, 255, 0.1);
  color: #f5e8cc;
}

/* Sutra content wrapper */
.sutra-page-body {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 20px 16px calc(var(--bar-h) + 24px);
}

/* Main sutra card */
.sutra-card {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--r-lg);
  padding: 32px 24px 24px;
  text-align: center;
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
}

.sutra-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg,
    transparent, var(--clr-gold), var(--clr-gold-pale), var(--clr-gold), transparent);
  opacity: 0.7;
}

.sutra-card-ref {
  font-family: var(--font-roman);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--clr-ink-faint);
  text-transform: uppercase;
  margin-bottom: 6px;
  display: block;
}

.sutra-card-location {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-roman);
  font-size: 0.8rem;
  color: var(--clr-ink-muted);
  margin-bottom: 20px;
}

.sutra-card-location .sep { opacity: 0.4; }

.location-chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 10px;
  background: rgba(122, 45, 16, 0.07);
  border: 1px solid rgba(122, 45, 16, 0.14);
  border-radius: 999px;
  font-size: 0.75rem;
  color: var(--clr-primary);
}

/* Main sutra text */
.sutra-main-text {
  font-family: var(--font-dev);
  font-size: clamp(1.4rem, 5vw, 2rem);
  line-height: 1.55;
  color: var(--clr-ink);
  margin-bottom: 12px;
  word-break: break-word;
}

[data-script="IAST"] .sutra-main-text,
[data-script="ISO15919"] .sutra-main-text {
  font-family: var(--font-display);
  font-style: italic;
  font-size: clamp(1.2rem, 4vw, 1.7rem);
}

[data-script="HK"] .sutra-main-text {
  font-family: var(--font-roman);
  font-style: normal;
  font-size: clamp(1.1rem, 3.5vw, 1.45rem);
  letter-spacing: 0.03em;
}

/* Secondary script line */
.sutra-alt-text {
  font-family: var(--font-dev);
  font-size: clamp(1rem, 3vw, 1.25rem);
  color: var(--clr-ink-muted);
  line-height: 1.6;
  margin-bottom: 22px;
  opacity: 0.7;
}

[data-script="Devanagari"] .sutra-alt-text { display: none; }

/* Card ornament divider */
.card-ornament {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin: 18px auto;
  max-width: 200px;
}

.card-ornament::before,
.card-ornament::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--clr-border);
}

.card-ornament-inner {
  width: 6px;
  height: 6px;
  background: var(--clr-gold);
  border-radius: 1px;
  transform: rotate(45deg);
  opacity: 0.5;
}

/* Action buttons */
.sutra-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
}

.action-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 16px;
  border: 1.5px solid var(--clr-border);
  border-radius: var(--r-sm);
  font-family: var(--font-roman);
  font-size: 0.83rem;
  color: var(--clr-ink-mid);
  background: transparent;
  transition: all 0.15s;
  cursor: pointer;
}

.action-btn:hover {
  border-color: var(--clr-gold);
  color: var(--clr-primary);
  background: rgba(184, 122, 34, 0.06);
}

.action-btn svg { width: 14px; height: 14px; }

/* ── Commentary ──────────────────────────────────────────────────── */
.commentary-section {
  margin-top: 24px;
}

.commentary-section-title {
  font-family: var(--font-title);
  font-size: 0.88rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--clr-primary);
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 16px;
}

.commentary-section-title::after {
  content: '';
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, var(--clr-border), transparent);
}

/* Commentary tabs */
.commentary-tabs {
  display: flex;
  gap: 4px;
  margin-bottom: 14px;
  border-bottom: 1.5px solid var(--clr-border-lt);
}

.commentary-tab {
  padding: 7px 16px;
  border: none;
  background: none;
  font-family: var(--font-roman);
  font-size: 0.88rem;
  color: var(--clr-ink-muted);
  cursor: pointer;
  font-weight: 500;
  transition: all 0.15s;
  border-bottom: 2px solid transparent;
  margin-bottom: -1.5px;
  border-radius: var(--r-sm) var(--r-sm) 0 0;
}

.commentary-tab:hover { color: var(--clr-primary); }
.commentary-tab.active { color: var(--clr-primary); border-bottom-color: var(--clr-primary); }

/* Commentary text block */
.commentary-body {
  background: rgba(246, 234, 208, 0.5);
  border: 1px solid var(--clr-border-lt);
  border-radius: var(--r-md);
  padding: 20px 22px;
  line-height: 1.8;
}

.commentary-text {
  font-family: var(--font-dev);
  font-size: 1rem;
  color: var(--clr-ink);
  white-space: pre-wrap;
  word-wrap: break-word;
}

[data-script="IAST"] .commentary-text,
[data-script="ISO15919"] .commentary-text {
  font-family: var(--font-roman);
  font-style: italic;
}

[data-script="HK"] .commentary-text {
  font-family: var(--font-roman);
  font-style: normal;
}

/* No commentary state */
.commentary-empty {
  background: linear-gradient(135deg,
    rgba(122, 45, 16, 0.03),
    rgba(212, 160, 64, 0.05));
  border: 1.5px dashed var(--clr-border);
  border-radius: var(--r-md);
  padding: 28px 24px;
  text-align: center;
}

.commentary-empty p {
  color: var(--clr-ink-muted);
  font-style: italic;
  font-family: var(--font-display);
  font-size: 1rem;
}

/* ── Bottom Navigation ───────────────────────────────────────────── */
.sutra-nav-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: var(--bar-h);
  background: var(--clr-surface);
  border-top: 1px solid var(--clr-border);
  display: flex;
  align-items: center;
  z-index: 100;
  box-shadow: 0 -4px 24px rgba(80, 40, 10, 0.12);
}

.nav-btn {
  flex: 1;
  height: 100%;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 18px;
  font-family: var(--font-roman);
  font-size: 0.88rem;
  color: var(--clr-ink-mid);
  transition: background 0.13s, color 0.13s;
}

.nav-btn:hover { background: rgba(180, 122, 34, 0.07); color: var(--clr-primary); }
.nav-btn:active { background: rgba(180, 122, 34, 0.12); }

.nav-btn.disabled {
  opacity: 0.3;
  pointer-events: none;
}

.nav-btn.nav-next {
  justify-content: flex-end;
  border-left: 1px solid var(--clr-border-lt);
}

.nav-btn.nav-prev { border-right: 1px solid var(--clr-border-lt); }

.nav-btn-label {
  display: flex;
  flex-direction: column;
  line-height: 1.25;
}

.nav-btn.nav-next .nav-btn-label { align-items: flex-end; }

.nav-btn-sub {
  font-size: 0.68rem;
  opacity: 0.55;
  letter-spacing: 0.02em;
  font-family: var(--font-dev);
}

[data-script="IAST"] .nav-btn-sub,
[data-script="ISO15919"] .nav-btn-sub,
[data-script="HK"] .nav-btn-sub {
  font-family: var(--font-roman);
}

.nav-btn svg { width: 18px; height: 18px; flex-shrink: 0; }

.nav-center {
  padding: 0 10px;
  font-family: var(--font-roman);
  font-size: 0.73rem;
  color: var(--clr-ink-faint);
  text-align: center;
  white-space: nowrap;
  letter-spacing: 0.04em;
}

/* ── Skeleton loading ────────────────────────────────────────────── */
.skeleton {
  background: linear-gradient(90deg,
    var(--clr-parchment-dk) 25%,
    var(--clr-surface-dk) 50%,
    var(--clr-parchment-dk) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.4s infinite;
  border-radius: 4px;
  color: transparent !important;
  pointer-events: none;
}

@keyframes shimmer { to { background-position: -200% 0; } }

/* ── Utility ─────────────────────────────────────────────────────── */
.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
}

/* ═══════════════════════════════════════════════════════════════════
   SITE FOOTER
   ═══════════════════════════════════════════════════════════════════ */

.site-footer {
  background: var(--clr-primary-dk);
  color: rgba(245, 232, 200, 0.6);
  font-family: var(--font-roman);
  font-size: 0.82rem;
  text-align: center;
  padding: 18px 20px;
  line-height: 1.7;
}

.site-footer a {
  color: rgba(245, 232, 200, 0.8);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.site-footer a:hover { color: #f5e8cc; }

/* ═══════════════════════════════════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════════════════════════════════ */

@media (min-width: 600px) {
  .controls-bar {
    flex-direction: row;
    align-items: center;
    padding: 12px 20px;
  }

  .controls-bar .controls-row:first-child { flex: 1; }

  .sutra-item { padding: 13px 24px 13px 18px; }
  .sutra-item-ref { min-width: 70px; }

  .sutra-page-body { padding-left: 24px; padding-right: 24px; }

  .sutra-card { padding: 40px 36px 28px; }

  .hero-title { letter-spacing: 0.06em; }
}

@media (min-width: 900px) {
  .sutra-list { padding-bottom: 60px; }
  .pada-divider { padding: 22px 24px 10px; }
  .sutra-main-text { font-size: 2.2rem; }
  .nav-btn-label { display: flex; }
}

@media (max-width: 400px) {
  .script-toggle button { padding: 4px 8px; font-size: 0.72rem; }
  .sutra-item { padding: 11px 14px 11px 14px; }
  .sutra-item-ref { min-width: 52px; padding-right: 8px; }
}