/* ==========================================================================
   Sundarkand Sacred Reader Design System
   Thematic Palettes: Saffron (Default), Dark, Sepia, Light
   ========================================================================== */

:root {
  /* Default: Saffron Devotional Theme */
  --bg-primary: #120406;
  --bg-secondary: #1f080c;
  --bg-card: #280b11;
  --bg-card-hover: #350f17;
  --bg-verse: #1a060a;
  --bg-arth: #2d0e15;
  --text-primary: #fff7ed;
  --text-secondary: #fed7aa;
  --text-muted: #d97706;
  --accent-gold: #f59e0b;
  --accent-gold-bright: #fbbf24;
  --accent-orange: #ea580c;
  --accent-saffron: #f97316;
  --border-card: #78350f;
  --border-subtle: #451a03;
  --highlight-bg: #b45309;
  --highlight-text: #ffffff;
  --badge-bg: #451a03;
  --badge-text: #fde68a;
  --shadow-color: rgba(0, 0, 0, 0.6);
  --header-glass: rgba(18, 4, 6, 0.92);
  --font-base: 'Martel', Georgia, serif;
  --font-title: 'Rozha One', 'Yatra One', serif;
  --font-ornate: 'Cinzel', serif;
  --font-size-base: 18px;
  --line-height-verse: 1.9;
  --line-height-arth: 1.8;
}

[data-theme="dark"] {
  --bg-primary: #090d16;
  --bg-secondary: #0f172a;
  --bg-card: #1e293b;
  --bg-card-hover: #273549;
  --bg-verse: #151e2e;
  --bg-arth: #1a2436;
  --text-primary: #f8fafc;
  --text-secondary: #cbd5e1;
  --text-muted: #94a3b8;
  --accent-gold: #38bdf8;
  --accent-gold-bright: #7dd3fc;
  --accent-orange: #0284c7;
  --accent-saffron: #38bdf8;
  --border-card: #334155;
  --border-subtle: #1e293b;
  --highlight-bg: #0369a1;
  --highlight-text: #ffffff;
  --badge-bg: #0f172a;
  --badge-text: #bae6fd;
  --shadow-color: rgba(0, 0, 0, 0.7);
  --header-glass: rgba(9, 13, 22, 0.94);
}

[data-theme="sepia"] {
  --bg-primary: #fbf0d9;
  --bg-secondary: #f4e3be;
  --bg-card: #fff9ea;
  --bg-card-hover: #fcf3de;
  --bg-verse: #fef5e1;
  --bg-arth: #f7ebd0;
  --text-primary: #2d1808;
  --text-secondary: #573315;
  --text-muted: #8c521f;
  --accent-gold: #b45309;
  --accent-gold-bright: #92400e;
  --accent-orange: #c2410c;
  --accent-saffron: #d97706;
  --border-card: #d5b583;
  --border-subtle: #e6ceaa;
  --highlight-bg: #fde68a;
  --highlight-text: #78350f;
  --badge-bg: #fef3c7;
  --badge-text: #92400e;
  --shadow-color: rgba(92, 54, 18, 0.15);
  --header-glass: rgba(251, 240, 217, 0.94);
}

[data-theme="light"] {
  --bg-primary: #f8fafc;
  --bg-secondary: #edf2f7;
  --bg-card: #ffffff;
  --bg-card-hover: #f1f5f9;
  --bg-verse: #faf5ff;
  --bg-arth: #f8fafc;
  --text-primary: #0f172a;
  --text-secondary: #334155;
  --text-muted: #64748b;
  --accent-gold: #b45309;
  --accent-gold-bright: #d97706;
  --accent-orange: #c2410c;
  --accent-saffron: #ea580c;
  --border-card: #e2e8f0;
  --border-subtle: #cbd5e1;
  --highlight-bg: #fed7aa;
  --highlight-text: #7c2d12;
  --badge-bg: #fee2e2;
  --badge-text: #991b1b;
  --shadow-color: rgba(0, 0, 0, 0.08);
  --header-glass: rgba(255, 255, 255, 0.95);
}

/* ==========================================================================
   Font Scaling States
   ========================================================================== */
body.font-sm { --font-size-base: 16px; }
body.font-md { --font-size-base: 18px; }
body.font-lg { --font-size-base: 22px; }
body.font-xl { --font-size-base: 26px; }

/* ==========================================================================
   Base & Reset
   ========================================================================== */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-base);
  font-size: var(--font-size-base);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  transition: background-color 0.3s ease, color 0.3s ease;
  min-height: 100vh;
}

/* Progress bar at top */
.progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  height: 4px;
  width: 0%;
  background: linear-gradient(90deg, var(--accent-orange), var(--accent-gold-bright));
  z-index: 1000;
  transition: width 0.1s linear;
}

/* ==========================================================================
   Header & Controls
   ========================================================================== */
.app-header {
  background: var(--header-glass);
  backdrop-filter: blur(12px);
  border-bottom: 2px solid var(--border-card);
  position: sticky;
  top: 0;
  z-index: 500;
  box-shadow: 0 4px 20px var(--shadow-color);
}

.header-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.5rem 1.5rem;
  border-bottom: 1px solid var(--border-subtle);
  font-size: 0.85rem;
}

.devotional-tagline {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--accent-gold);
  font-weight: 600;
}

.om-symbol {
  font-size: 1.1rem;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.theme-picker, .font-controls {
  display: flex;
  gap: 0.25rem;
  background: var(--bg-secondary);
  padding: 0.25rem;
  border-radius: 9999px;
  border: 1px solid var(--border-subtle);
}

.theme-btn, .ctrl-btn {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  padding: 0.25rem 0.6rem;
  font-size: 0.85rem;
  font-weight: 700;
  border-radius: 9999px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.theme-btn:hover, .ctrl-btn:hover {
  background: var(--bg-card);
  color: var(--accent-gold);
}

.theme-btn.active, .ctrl-btn.active {
  background: var(--accent-gold);
  color: #120406;
}

.header-main {
  text-align: center;
  padding: 1.25rem 1.5rem 1rem;
}

.slogan-badge {
  display: inline-block;
  background: var(--badge-bg);
  color: var(--badge-text);
  border: 1px solid var(--border-card);
  padding: 0.2rem 1rem;
  border-radius: 9999px;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
}

.main-title {
  font-family: var(--font-title);
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--accent-gold-bright);
  text-shadow: 0 2px 10px rgba(245, 158, 11, 0.3);
  letter-spacing: 0.02em;
  line-height: 1.3;
}

.subtitle {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-top: 0.25rem;
}

/* Metrics Grid */
.metrics-grid {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  margin-top: 1rem;
  flex-wrap: wrap;
}

.metric-card {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--bg-secondary);
  padding: 0.35rem 0.9rem;
  border-radius: 8px;
  border: 1px solid var(--border-subtle);
}

.metric-num {
  font-size: 1.1rem;
  font-weight: 900;
  color: var(--accent-gold);
}

.metric-label {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

/* Toolbar & Search */
.toolbar-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.75rem 1.5rem;
  border-top: 1px solid var(--border-subtle);
  flex-wrap: wrap;
}

.search-box {
  flex: 1;
  min-width: 280px;
  position: relative;
  display: flex;
  align-items: center;
}

.search-icon {
  position: absolute;
  left: 0.85rem;
  font-size: 0.9rem;
  color: var(--accent-gold);
  pointer-events: none;
}

.search-box input {
  width: 100%;
  padding: 0.6rem 2.2rem 0.6rem 2.4rem;
  border-radius: 9999px;
  border: 1px solid var(--border-card);
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.95rem;
  outline: none;
  transition: all 0.2s ease;
}

.search-box input:focus {
  border-color: var(--accent-gold);
  box-shadow: 0 0 12px rgba(245, 158, 11, 0.35);
  background: var(--bg-card);
}

.clear-btn {
  position: absolute;
  right: 0.85rem;
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 0.9rem;
  display: none;
}

.search-box input:not(:placeholder-shown) + .clear-btn {
  display: block;
}

.mode-toggles {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.mode-btn {
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  padding: 0.5rem 0.9rem;
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  transition: all 0.2s ease;
}

.mode-btn:hover {
  background: var(--bg-card);
  border-color: var(--accent-gold);
  color: var(--accent-gold-bright);
}

.mode-btn.active {
  background: var(--accent-gold);
  color: #120406;
  border-color: var(--accent-gold-bright);
  font-weight: 700;
}

.mode-btn.drawer-btn {
  border-color: var(--accent-orange);
}

/* Filter Pills */
.filter-pills {
  display: flex;
  gap: 0.5rem;
  padding: 0.5rem 1.5rem;
  overflow-x: auto;
  border-top: 1px solid var(--border-subtle);
  scrollbar-width: none;
}

.filter-pills::-webkit-scrollbar {
  display: none;
}

.pill {
  white-space: nowrap;
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
  padding: 0.25rem 0.8rem;
  border-radius: 9999px;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}

.pill:hover {
  color: var(--accent-gold);
  border-color: var(--accent-gold);
}

.pill.active {
  background: var(--accent-orange);
  color: #ffffff;
  border-color: var(--accent-orange);
}

/* ==========================================================================
   Layout & Drawer
   ========================================================================== */
.layout-container {
  display: flex;
  max-width: 1200px;
  margin: 0 auto;
  padding: 1.5rem 1rem 4rem;
  position: relative;
  gap: 2rem;
}

.chapter-drawer {
  position: fixed;
  top: 0;
  right: -360px;
  width: 340px;
  height: 100vh;
  background: var(--bg-card);
  border-left: 2px solid var(--border-card);
  z-index: 1100;
  box-shadow: -5px 0 25px var(--shadow-color);
  transition: right 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  flex-direction: column;
}

.chapter-drawer.open {
  right: 0;
}

.drawer-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(3px);
  z-index: 1050;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.drawer-overlay.active {
  opacity: 1;
  pointer-events: all;
}

.drawer-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border-subtle);
  background: var(--bg-secondary);
}

.drawer-header h3 {
  font-size: 1.1rem;
  color: var(--accent-gold-bright);
}

.close-drawer-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 1.2rem;
  cursor: pointer;
  padding: 0.2rem;
}

.drawer-search {
  padding: 0.75rem 1.25rem;
  border-bottom: 1px solid var(--border-subtle);
}

.drawer-search input {
  width: 100%;
  padding: 0.5rem 0.8rem;
  background: var(--bg-primary);
  border: 1px solid var(--border-subtle);
  border-radius: 6px;
  color: var(--text-primary);
  font-size: 0.85rem;
  outline: none;
}

.drawer-nav {
  flex: 1;
  overflow-y: auto;
  padding: 0.5rem 0;
}

.drawer-item {
  display: block;
  padding: 0.7rem 1.25rem;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  line-height: 1.4;
  border-left: 3px solid transparent;
  transition: all 0.2s ease;
}

.drawer-item:hover {
  background: var(--bg-secondary);
  color: var(--accent-gold-bright);
  border-left-color: var(--accent-gold);
}

.drawer-item.active {
  background: var(--bg-verse);
  color: var(--accent-gold-bright);
  border-left-color: var(--accent-orange);
  font-weight: 700;
}

.drawer-item .item-num {
  font-weight: 700;
  color: var(--accent-gold);
  margin-right: 0.4rem;
}

/* ==========================================================================
   Reader Main
   ========================================================================== */
.reader-main {
  flex: 1;
  min-width: 0;
}

.search-banner {
  background: var(--bg-secondary);
  border: 1px solid var(--accent-gold);
  color: var(--accent-gold-bright);
  padding: 0.75rem 1.25rem;
  border-radius: 8px;
  margin-bottom: 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.95rem;
  font-weight: 600;
}

.search-banner.hidden {
  display: none;
}

.link-btn {
  background: transparent;
  border: none;
  color: var(--text-primary);
  text-decoration: underline;
  cursor: pointer;
  font-size: 0.85rem;
}

/* Sections */
.section-block {
  margin-bottom: 3.5rem;
  position: relative;
}

.section-header {
  padding-bottom: 0.75rem;
  margin-bottom: 1.5rem;
  border-bottom: 2px solid var(--border-card);
  position: relative;
}

.section-badge {
  display: inline-block;
  background: var(--badge-bg);
  color: var(--badge-text);
  font-size: 0.8rem;
  font-weight: 700;
  padding: 0.15rem 0.6rem;
  border-radius: 4px;
  border: 1px solid var(--border-card);
  margin-bottom: 0.4rem;
}

.section-title {
  font-family: var(--font-title);
  font-size: 1.8rem;
  color: var(--accent-gold-bright);
  line-height: 1.35;
}

/* Verse Cards */
.verse-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: 12px;
  padding: 1.4rem;
  margin-bottom: 1.25rem;
  box-shadow: 0 4px 12px var(--shadow-color);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
  position: relative;
}

.verse-card:hover {
  border-color: var(--accent-gold);
  box-shadow: 0 6px 20px var(--shadow-color);
}

.verse-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.9rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border-subtle);
}

.verse-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  background: var(--bg-secondary);
  color: var(--accent-gold);
  font-weight: 700;
  font-size: 0.8rem;
  padding: 0.2rem 0.65rem;
  border-radius: 9999px;
  border: 1px solid var(--border-subtle);
}

.verse-tag.doha {
  background: var(--accent-orange);
  color: #ffffff;
  border-color: var(--accent-orange);
}

.verse-tag.shloka {
  background: #7c2d12;
  color: #fef08a;
  border-color: #b45309;
}

.verse-tag.chhand {
  background: #14532d;
  color: #bbf7d0;
  border-color: #16a34a;
}

.verse-tools {
  display: flex;
  gap: 0.5rem;
}

.tool-icon-btn {
  background: transparent;
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
  width: 28px;
  height: 28px;
  border-radius: 6px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  transition: all 0.2s ease;
}

.tool-icon-btn:hover {
  background: var(--bg-secondary);
  color: var(--accent-gold-bright);
  border-color: var(--accent-gold);
}

/* Original Verse Text */
.verse-text-box {
  background: var(--bg-verse);
  border-left: 4px solid var(--accent-gold);
  padding: 1rem 1.25rem;
  border-radius: 0 8px 8px 0;
  margin-bottom: 0.85rem;
}

.verse-lines {
  font-weight: 700;
  font-size: 1.1em;
  color: var(--text-primary);
  line-height: var(--line-height-verse);
  letter-spacing: 0.015em;
  white-space: pre-wrap;
}

/* Hindi Arth / Bhavarth Box */
.arth-box {
  background: var(--bg-arth);
  border-left: 4px solid var(--accent-orange);
  padding: 0.9rem 1.25rem;
  border-radius: 0 8px 8px 0;
  font-size: 0.98em;
  color: var(--text-secondary);
  line-height: var(--line-height-arth);
}

.arth-label {
  font-weight: 800;
  color: var(--accent-gold);
  margin-right: 0.4rem;
}

/* View Mode classes */
body.mode-verses-only .arth-box {
  display: none;
}

body.mode-arth-only .verse-text-box {
  display: none;
}

/* Highlight Matches */
mark.search-match {
  background-color: var(--highlight-bg);
  color: var(--highlight-text);
  padding: 0 0.25rem;
  border-radius: 3px;
  font-weight: 700;
}

/* Concluding Box */
.concluding-box {
  background: var(--bg-secondary);
  border: 2px dashed var(--accent-gold);
  border-radius: 12px;
  padding: 1.5rem;
  text-align: center;
  margin-top: 2rem;
  box-shadow: 0 4px 16px var(--shadow-color);
}

.concluding-box h4 {
  font-family: var(--font-title);
  color: var(--accent-gold-bright);
  font-size: 1.3rem;
  margin-bottom: 0.5rem;
}

.concluding-box p {
  color: var(--text-secondary);
  font-size: 1rem;
  line-height: 1.6;
}

/* ==========================================================================
   Floating Fast Nav & Toast
   ========================================================================== */
.floating-controls {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  z-index: 400;
}

.floating-btn {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--accent-orange);
  color: #ffffff;
  border: 2px solid var(--accent-gold);
  font-size: 1.1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 15px var(--shadow-color);
  transition: transform 0.2s ease, background 0.2s ease;
}

.floating-btn:hover {
  transform: translateY(-3px) scale(1.05);
  background: var(--accent-gold);
  color: #120406;
}

.toast {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent-gold);
  color: #120406;
  font-weight: 700;
  padding: 0.6rem 1.5rem;
  border-radius: 9999px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
  z-index: 1200;
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.toast.hidden {
  opacity: 0;
  pointer-events: none;
  transform: translate(-50%, 20px);
}

/* ==========================================================================
   Footer
   ========================================================================== */
.app-footer {
  background: var(--bg-secondary);
  border-top: 2px solid var(--border-card);
  padding: 3rem 1.5rem 2rem;
  text-align: center;
  color: var(--text-secondary);
  margin-top: 4rem;
}

.doha-quote {
  font-family: var(--font-title);
  font-size: 1.25rem;
  color: var(--accent-gold-bright);
  line-height: 1.8;
  margin-bottom: 0.75rem;
}

.footer-sub {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  flex-wrap: wrap;
  font-size: 0.9rem;
}

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.2s ease;
}

.footer-links a:hover {
  color: var(--accent-gold);
}

/* ==========================================================================
   Responsive Adaptations
   ========================================================================== */
@media (max-width: 768px) {
  .header-top {
    flex-direction: column;
    gap: 0.5rem;
    align-items: flex-start;
  }
  
  .header-actions {
    width: 100%;
    justify-content: space-between;
  }
  
  .main-title {
    font-size: 1.6rem;
  }
  
  .toolbar-container {
    flex-direction: column;
    align-items: stretch;
  }
  
  .search-box {
    width: 100%;
  }
  
  .mode-toggles {
    justify-content: stretch;
  }
  
  .mode-btn {
    flex: 1;
    justify-content: center;
    font-size: 0.75rem;
    padding: 0.45rem;
  }
  
  .verse-card {
    padding: 1rem;
  }
  
  .verse-lines {
    font-size: 1em;
  }
}