/* ═══════════════════════════════════════════════════════════════════
   Hemacandra's Śabdānuśāsana — Shared Stylesheet
   ═══════════════════════════════════════════════════════════════════ */

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

/* ── Variables ──────────────────────────────────────────────────── */
:root {
  --primary:      #7B3F1A;
  --primary-dark: #5C2D0E;
  --primary-light:#A0572A;
  --paper:        #F7EDD8;
  --paper-dark:   #EDE0C4;
  --ink:          #2A1A0E;
  --ink-muted:    #6B4F35;
  --accent:       #B8792A;
  --gold:         #C9952E;
  --border:       #D5C4A8;
  --border-light: #E8DCC8;
  --shadow-sm:    0 1px 3px rgba(100,60,20,.12);
  --shadow-md:    0 4px 16px rgba(100,60,20,.14);
  --shadow-lg:    0 8px 32px rgba(100,60,20,.16);

  --font-dev:     'Noto Serif Devanagari', serif;
  --font-roman:   'EB Garamond', Georgia, serif;
  --font-display: 'Cormorant Garamond', 'EB Garamond', serif;
  --font-ui:      'EB Garamond', Georgia, serif;

  --r-sm: 6px;
  --r-md: 10px;
  --r-lg: 16px;

  --nav-h: 60px;
  --bar-h: 64px;  /* bottom nav bar height */
}

/* ── Reset & Base ───────────────────────────────────────────────── */
*, *::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: 1.65;
  color: var(--ink);
  background: var(--paper);
  min-height: 100vh;
}

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

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

/* ── Page Header ────────────────────────────────────────────────── */
.site-header {
  background: var(--primary-dark);
  color: #F7EDD8;
  padding: 18px 20px 14px;
  text-align: center;
  position: relative;
}

.site-header .back-link {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: rgba(247,237,216,.75);
  font-size: 15px;
  display: flex;
  align-items: center;
  gap: 5px;
  transition: color .2s;
}
.site-header .back-link:hover { color: #F7EDD8; text-decoration: none; }
.site-header .back-link svg { width: 16px; height: 16px; }

.site-header h1 {
  font-family: var(--font-display);
  font-size: clamp(1.3rem, 4vw, 1.75rem);
  font-weight: 600;
  letter-spacing: .01em;
  line-height: 1.2;
}

.site-header .subtitle {
  font-family: var(--font-roman);
  font-style: italic;
  font-size: clamp(.8rem, 2.5vw, .95rem);
  color: rgba(247,237,216,.7);
  margin-top: 3px;
  letter-spacing: .02em;
}

/* ── Script Toggle ──────────────────────────────────────────────── */
.script-toggle {
  display: inline-flex;
  background: var(--paper-dark);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 3px;
  gap: 2px;
}

.script-toggle button {
  padding: 5px 13px;
  border-radius: 999px;
  font-family: var(--font-roman);
  font-size: .8rem;
  font-weight: 500;
  color: var(--ink-muted);
  letter-spacing: .03em;
  transition: background .15s, color .15s;
  white-space: nowrap;
}

.script-toggle button.active {
  background: var(--primary);
  color: #F7EDD8;
}

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

/* ── Pāda Filter Tabs ───────────────────────────────────────────── */
.pada-tabs {
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
}

.pada-tabs button {
  padding: 6px 14px;
  border-radius: var(--r-sm);
  font-family: var(--font-roman);
  font-size: .85rem;
  font-weight: 500;
  color: var(--ink-muted);
  border: 1px solid var(--border);
  background: var(--paper);
  transition: all .15s;
}

.pada-tabs button.active {
  background: var(--primary);
  color: #F7EDD8;
  border-color: var(--primary);
}

.pada-tabs button:hover:not(.active) {
  background: var(--paper-dark);
  border-color: var(--border);
  color: var(--ink);
}

/* ── ID Badge ───────────────────────────────────────────────────── */
.sutra-id-badge {
  display: inline-block;
  font-family: 'EB Garamond', monospace;
  font-size: .72rem;
  font-weight: 500;
  letter-spacing: .06em;
  color: var(--primary);
  background: rgba(123,63,26,.08);
  border: 1px solid rgba(123,63,26,.18);
  border-radius: var(--r-sm);
  padding: 2px 7px;
  white-space: nowrap;
  flex-shrink: 0;
}

/* ── Sutra Text (script-aware) ──────────────────────────────────── */
.sutra-text {
  font-family: var(--font-dev);
  font-size: 1.05em;
  line-height: 1.6;
}

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

[data-script="HK"] .sutra-text {
  font-style: normal;
  font-family: 'EB Garamond', 'Courier New', monospace;
}

/* ── Loading Overlay ────────────────────────────────────────────── */
.transliteration-loading {
  position: fixed;
  bottom: 80px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--primary-dark);
  color: #F7EDD8;
  padding: 8px 20px;
  border-radius: 999px;
  font-size: .85rem;
  z-index: 200;
  opacity: 0;
  pointer-events: none;
  transition: opacity .2s;
}

.transliteration-loading.visible { opacity: 1; }

/* ── Commentary Section ─────────────────────────────────────────── */
.commentary-section {
  border-top: 1px solid var(--border-light);
  padding-top: 24px;
  margin-top: 24px;
}

.commentary-section h2 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.commentary-section h2::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border-light);
}

.coming-soon-box {
  background: linear-gradient(135deg, rgba(123,63,26,.04), rgba(201,149,46,.06));
  border: 1px dashed var(--border);
  border-radius: var(--r-md);
  padding: 28px 24px;
  text-align: center;
}

.coming-soon-box .icon {
  font-size: 1.8rem;
  margin-bottom: 10px;
  opacity: .6;
}

.coming-soon-box p {
  color: var(--ink-muted);
  font-style: italic;
  font-size: .95rem;
}

.coming-soon-box strong {
  display: block;
  color: var(--ink);
  font-style: normal;
  font-family: var(--font-display);
  font-size: 1.05rem;
  margin-bottom: 6px;
}

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

/* ════════════════════════════════════════════════════════════════════
   INDEX PAGE
   ════════════════════════════════════════════════════════════════════ */

/* Controls bar */
.controls-bar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--paper);
  border-bottom: 1px solid var(--border-light);
  padding: 10px 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  box-shadow: var(--shadow-sm);
}

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

.controls-row.space-between {
  justify-content: space-between;
}

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

.search-wrap svg {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  width: 16px;
  height: 16px;
  color: var(--ink-muted);
  pointer-events: none;
}

#sutra-search {
  width: 100%;
  padding: 9px 12px 9px 36px;
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  background: white;
  font-family: var(--font-ui);
  font-size: .9rem;
  color: var(--ink);
  transition: border-color .15s, box-shadow .15s;
}

#sutra-search:focus {
  outline: none;
  border-color: var(--primary-light);
  box-shadow: 0 0 0 3px rgba(123,63,26,.12);
}

#sutra-search::placeholder { color: var(--ink-muted); opacity: .7; }

/* Sutra list */
.sutra-list {
  padding: 0 0 80px;
}

.sutra-list-header {
  padding: 12px 16px 8px;
  font-size: .8rem;
  color: var(--ink-muted);
  letter-spacing: .04em;
  text-transform: uppercase;
  font-family: var(--font-roman);
}

.pada-group-heading {
  padding: 10px 16px 4px;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  color: var(--primary);
  border-top: 1px solid var(--border-light);
  margin-top: 4px;
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.pada-group-heading .count {
  font-family: var(--font-roman);
  font-size: .75rem;
  font-weight: 400;
  color: var(--ink-muted);
}

.sutra-item {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 11px 16px;
  border-bottom: 1px solid var(--border-light);
  cursor: pointer;
  transition: background .12s;
  text-decoration: none;
  color: inherit;
}

.sutra-item:hover {
  background: rgba(123,63,26,.04);
  text-decoration: none;
}

.sutra-item:active { background: rgba(123,63,26,.08); }

.sutra-item .text {
  flex: 1;
  font-family: var(--font-dev);
  font-size: 1rem;
  line-height: 1.5;
  color: var(--ink);
}

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

[data-script="HK"] .sutra-item .text { font-style: normal; }

.sutra-item .arrow {
  color: var(--border);
  flex-shrink: 0;
  font-size: .9rem;
}

.sutra-item:hover .arrow { color: var(--ink-muted); }

/* Empty state */
.empty-state {
  padding: 48px 24px;
  text-align: center;
  color: var(--ink-muted);
  font-style: italic;
}

/* Result count */
#result-count {
  font-size: .78rem;
  color: var(--ink-muted);
  padding: 6px 16px 4px;
  font-family: var(--font-roman);
}

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

.sutra-page {
  max-width: 680px;
  margin: 0 auto;
  padding: 0 16px calc(var(--bar-h) + 24px);
}

/* Breadcrumb row */
.sutra-breadcrumb {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0 10px;
  border-bottom: 1px solid var(--border-light);
  margin-bottom: 0;
}

.sutra-breadcrumb a {
  font-size: .88rem;
  color: var(--ink-muted);
  display: flex;
  align-items: center;
  gap: 5px;
  transition: color .15s;
}

.sutra-breadcrumb a:hover { color: var(--primary); text-decoration: none; }

.sutra-breadcrumb .ref-label {
  font-family: var(--font-roman);
  font-size: .82rem;
  color: var(--ink-muted);
}

/* Main sutra display */
.sutra-display {
  padding: 32px 0 24px;
  text-align: center;
  border-bottom: 1px solid var(--border-light);
}

.sutra-main-text {
  font-family: var(--font-dev);
  font-size: clamp(1.3rem, 4vw, 1.75rem);
  line-height: 1.6;
  color: var(--ink);
  margin-bottom: 20px;
  word-break: break-word;
}

[data-script="IAST"] .sutra-main-text,
[data-script="ISO15919"] .sutra-main-text {
  font-family: var(--font-roman);
  font-style: italic;
  font-size: clamp(1.25rem, 3.5vw, 1.65rem);
}

[data-script="HK"] .sutra-main-text {
  font-family: 'EB Garamond', 'Courier New', monospace;
  font-style: normal;
  font-size: clamp(1.1rem, 3vw, 1.45rem);
  letter-spacing: .02em;
}

.sutra-display .script-toggle {
  margin-bottom: 16px;
}

.sutra-meta {
  font-family: var(--font-roman);
  font-size: .85rem;
  color: var(--ink-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}

.sutra-meta .sep { opacity: .4; }

.sutra-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-top: 16px;
}

.action-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  font-family: var(--font-roman);
  font-size: .82rem;
  color: var(--ink-muted);
  background: var(--paper);
  transition: all .15s;
}

.action-btn:hover {
  border-color: var(--primary-light);
  color: var(--primary);
  background: rgba(123,63,26,.04);
}

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

/* ── Bottom Navigation Bar ──────────────────────────────────────── */
.sutra-nav-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: var(--bar-h);
  background: var(--paper);
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  z-index: 100;
  box-shadow: 0 -2px 12px rgba(100,60,20,.1);
}

.nav-btn {
  flex: 1;
  height: 100%;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 16px;
  font-family: var(--font-roman);
  font-size: .85rem;
  color: var(--ink-muted);
  transition: background .12s, color .12s;
}

.nav-btn:hover { background: rgba(123,63,26,.05); color: var(--primary); }
.nav-btn:active { background: rgba(123,63,26,.1); }

.nav-btn.disabled {
  opacity: .35;
  pointer-events: none;
}

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

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

.nav-btn .btn-label {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  line-height: 1.2;
}

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

.nav-btn .btn-hint {
  font-size: .7rem;
  opacity: .6;
  letter-spacing: .02em;
}

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

.nav-center {
  padding: 0 12px;
  font-family: var(--font-roman);
  font-size: .75rem;
  color: var(--ink-muted);
  text-align: center;
  min-width: 80px;
  white-space: nowrap;
}

/* ── Responsive ─────────────────────────────────────────────────── */
@media (min-width: 600px) {
  .controls-bar {
    flex-direction: row;
    align-items: center;
    padding: 10px 20px;
  }

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

  .sutra-item { padding: 11px 20px; }

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

  .sutra-display { padding: 40px 0 28px; }
}

@media (min-width: 900px) {
  .sutra-list { max-width: 800px; margin: 0 auto; }

  .sutra-page { padding-top: 4px; }

  .sutra-main-text { font-size: 2rem; }

  .nav-btn .btn-label { display: flex; }
}