/* Global Variables */
:root {
  --text-color: #2d3748;
  --bg-color: #ffffff;
  --card-bg: #f7fafc;
  --border-color: #e2e8f0;
  --accent-color: #4a5568;
  --light-accent: #718096;
}

/* Dark Theme Variables */
[data-theme="dark"] {
  --text-color: #f7fafc;
  --bg-color: #1a202c;
  --card-bg: #2d3748;
  --border-color: #4a5568;
  --accent-color: #e2e8f0;
  --light-accent: #a0aec0;
}

/* Global Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: "Noto Sans Tamil", Arial, sans-serif;
  background-color: var(--bg-color);
  color: var(--text-color);
  min-height: 100vh;
  line-height: 1.6;
  font-size: 16px;
}

.container {
  width: 95%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px 0;
}

/* Navbar Styles */
.navbar {
  background: var(--card-bg);
  border-bottom: 1px solid var(--border-color);
  padding: 15px 0;
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 1000;
}

.navbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.navbar-brand {
  font-size: 28px;
  font-weight: bold;
  color: var(--text-color);
  text-decoration: none;
}

.navbar-nav {
  display: flex;
  list-style: none;
  gap: 25px;
  align-items: center;
}

.nav-link {
  color: var(--text-color);
  text-decoration: none;
  font-weight: 500;
  padding: 8px 12px;
  border-radius: 6px;
}

.nav-link:hover,
.nav-link.active {
  background: var(--border-color);
}

.navbar-controls {
  display: flex;
  align-items: center;
  gap: 15px;
}

.language-select {
  padding: 6px 10px;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  background: var(--card-bg);
  color: var(--text-color);
  font-size: 14px;
}

.theme-toggle {
  background: none;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  padding: 6px 10px;
  color: var(--text-color);
  cursor: pointer;
  font-size: 14px;
}

.theme-toggle:hover {
  background: var(--border-color);
}

/* Main Content */
.main-content {
  margin-top: 80px;
  padding: 0 20px;
}

h1 {
  text-align: center;
  font-size: 36px;
  margin-bottom: 30px;
  color: var(--text-color);
}

/* Image Slider */
.slider-section {
  margin: 40px 0;
  position: relative;
}

.slider-container {
  width: 100%;
  max-width: 900px;
  margin: 0 auto;
  overflow: hidden;
  border-radius: 12px;
}

.slider {
  display: flex;
  width: 400%;
}

.slide {
  width: 25%;
  position: relative;
}

.slide img {
  width: 100%;
  height: 350px;
  object-fit: cover;
  border-radius: 12px;
}

.slide-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(transparent, rgba(0,0,0,0.7));
  padding: 20px;
  border-radius: 0 0 12px 12px;
}

.slide-title {
  color: white;
  font-size: 20px;
  font-weight: bold;
  margin-bottom: 5px;
}

.slide-description {
  color: #e2e8f0;
  font-size: 14px;
}

.slider-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(255,255,255,0.8);
  border: none;
  color: #333;
  font-size: 20px;
  padding: 10px 15px;
  border-radius: 50%;
  cursor: pointer;
}

.slider-arrow.prev {
  left: 15px;
}

.slider-arrow.next {
  right: 15px;
}

.slider-nav {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 15px;
}

.slider-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--border-color);
  cursor: pointer;
}

.slider-dot.active {
  background: var(--accent-color);
}

/* Search Section */
.search-section {
  background: var(--card-bg);
  border-radius: 12px;
  padding: 25px;
  margin: 30px 0;
  border: 1px solid var(--border-color);
}

.search-box {
  display: flex;
  gap: 15px;
  margin-bottom: 20px;
  flex-wrap: wrap;
  justify-content: center;
}

.search-box input,
.search-box select {
  padding: 12px 16px;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  font-size: 16px;
  background: var(--bg-color);
  color: var(--text-color);
  min-width: 250px;
}

.search-box input:focus,
.search-box select:focus {
  outline: none;
  border-color: var(--accent-color);
}

.stats {
  text-align: center;
  color: var(--light-accent);
  font-size: 16px;
  padding: 10px;
}

.tts-warning-popup {
  position: fixed;
  top: 20px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  box-shadow: 0 10px 25px rgba(0,0,0,0.1);
  z-index: 2000;
  width: min(96%, 520px);
  border-radius: 12px;
  overflow: hidden;
}

.popup-content {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.popup-content p {
  margin: 0;
  color: var(--text-color);
  font-size: 15px;
  line-height: 1.7;
}

.popup-close {
  align-self: flex-end;
  background: var(--accent-color);
  color: white;
  border: none;
  padding: 10px 16px;
  border-radius: 8px;
  cursor: pointer;
}

.popup-close:hover {
  background: var(--light-accent);
}

/* Kural Display */
.kural-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
  gap: 20px;
  margin-top: 30px;
}

.kural-card {
  background: var(--card-bg);
  border-radius: 12px;
  padding: 20px;
  border: 1px solid var(--border-color);
}

.kural-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 15px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-color);
}

.kural-number {
  font-size: 18px;
  font-weight: bold;
  color: var(--accent-color);
}

.kural-actions {
  display: flex;
  gap: 8px;
  align-items: center;
}

.audio-btn {
  background: var(--accent-color);
  color: white;
  border: none;
  border-radius: 6px;
  padding: 8px 12px;
  cursor: pointer;
  font-size: 14px;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  gap: 5px;
}

.audio-btn:hover {
  background: var(--light-accent);
  transform: scale(1.05);
}

.audio-btn.playing {
  background: #e53e3e;
}

.audio-btn.playing:hover {
  background: #c53030;
}

.audio-btn i {
  font-size: 12px;
}

.kural-details {
  text-align: right;
  font-size: 14px;
  color: var(--light-accent);
  flex: 1;
  margin-left: 15px;
}

.pal {
  font-weight: 600;
  margin-bottom: 2px;
}

.adhigaram {
  font-size: 13px;
}

.kural-text {
  font-size: 20px;
  line-height: 1.8;
  margin-bottom: 15px;
  color: var(--text-color);
  font-weight: 500;
  text-align: center;
  padding: 15px;
  background: var(--bg-color);
  border-radius: 8px;
  border: 1px solid var(--border-color);
}

.kural-line {
  margin-bottom: 8px;
}

.kural-line:last-child {
  margin-bottom: 0;
}

.meaning {
  color: var(--light-accent);
  line-height: 1.7;
  font-size: 15px;
  padding: 12px;
  background: var(--bg-color);
  border-radius: 8px;
  border: 1px solid var(--border-color);
}

.load-more-container {
  grid-column: 1 / -1;
  text-align: center;
  margin-top: 20px;
}

.load-more-btn {
  background: var(--accent-color);
  color: white;
  border: none;
  padding: 12px 24px;
  border-radius: 8px;
  font-size: 16px;
  cursor: pointer;
  transition: background-color 0.2s;
}

.load-more-btn:hover {
  background: var(--light-accent);
}

.empty {
  text-align: center;
  padding: 60px 30px;
  color: var(--light-accent);
  font-size: 18px;
  background: var(--card-bg);
  border-radius: 12px;
  border: 1px solid var(--border-color);
  grid-column: 1 / -1;
}

/* Footer */
.footer {
  margin-top: 60px;
  padding: 30px 0;
  background: var(--card-bg);
  border-top: 1px solid var(--border-color);
  text-align: center;
}

.footer-content p {
  color: var(--light-accent);
  font-size: 14px;
}

/* History Page Styles */
.history-content {
  max-width: 800px;
  margin: 0 auto;
  padding: 20px 0;
}

.history-section {
  margin-bottom: 40px;
  padding: 25px;
  background: var(--card-bg);
  border-radius: 12px;
  border: 1px solid var(--border-color);
}

.history-section h2 {
  color: var(--accent-color);
  margin-bottom: 20px;
  font-size: 24px;
  border-bottom: 2px solid var(--border-color);
  padding-bottom: 10px;
}

.history-section p {
  margin-bottom: 15px;
  line-height: 1.7;
  color: var(--text-color);
}

.history-section ul {
  margin: 20px 0;
  padding-left: 20px;
}

.history-section li {
  margin-bottom: 10px;
  color: var(--text-color);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
  margin-top: 20px;
}

.feature-card {
  padding: 20px;
  background: var(--bg-color);
  border-radius: 8px;
  border: 1px solid var(--border-color);
}

.feature-card h3 {
  color: var(--accent-color);
  margin-bottom: 10px;
  font-size: 18px;
}

.feature-card p {
  color: var(--light-accent);
  font-size: 14px;
  line-height: 1.6;
}

blockquote {
  background: var(--bg-color);
  border-left: 4px solid var(--accent-color);
  padding: 20px;
  margin: 20px 0;
  font-style: italic;
  border-radius: 0 8px 8px 0;
}

blockquote cite {
  display: block;
  margin-top: 10px;
  color: var(--light-accent);
  font-size: 14px;
  font-style: normal;
}

.languages-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 15px;
}

.language-tag {
  background: var(--accent-color);
  color: white;
  padding: 5px 12px;
  border-radius: 20px;
  font-size: 14px;
  font-weight: 500;
}