:root {
  --bg-color: #121212;
  --card-bg: #1e1e1e;
  --text-primary: #e0e0e0;
  --text-secondary: #a0a0a0;
  --accent-gold: #d4af37;
  --accent-gold-dim: #8a7020;
  --font-serif: 'Maru Buri', 'Noto Serif KR', serif;
  /* Unifying to Korean Serif */
  --font-sans: 'Inter', sans-serif;
  --font-kr: 'Maru Buri', 'Noto Serif KR', serif;
  --font-weight-kr: 500;
  --tooltip-bg: #333;
}

/* Tooltip Styles */
.tooltip-word {
  cursor: help;
  border-bottom: 1px dotted var(--accent-gold);
  position: relative;
  display: inline-block;
}

.tooltip-word:hover {
  color: var(--accent-gold);
}

.tooltip-word::after {
  content: attr(data-meaning);
  position: absolute;
  bottom: 120%;
  left: var(--tooltip-left, 50%);
  transform: var(--tooltip-transform, translateX(-50%));
  background-color: var(--tooltip-bg);
  color: #fff;
  padding: 8px 12px;
  border-radius: 6px;
  font-size: 0.9rem;
  white-space: pre-wrap;
  min-width: 200px;
  max-width: min(350px, 90vw);
  width: max-content;
  text-align: left;
  z-index: 1001;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s, visibility 0.2s;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
  pointer-events: none;
  font-family: var(--font-kr);
  font-weight: var(--font-weight-kr);
  border: 1px solid var(--accent-gold-dim);
}

.tooltip-word:hover::after {
  opacity: 1;
  visibility: visible;
}

/* Arrow for Tooltip */
.tooltip-word::before {
  content: "";
  position: absolute;
  bottom: 110%;
  left: 50%;
  transform: translateX(-50%);
  border-width: 6px;
  border-style: solid;
  border-color: var(--tooltip-bg) transparent transparent transparent;
  z-index: 1001;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s, visibility 0.2s;
}

.tooltip-word:hover::before {
  opacity: 1;
  visibility: visible;
}

html {
  scroll-behavior: smooth;
}

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

body {
  background-color: var(--bg-color);
  color: var(--text-primary);
  font-family: var(--font-sans);
  line-height: 1.6;
  padding-bottom: 50px;
  /* Global word-break settings */
  word-break: keep-all;
  overflow-wrap: break-word;
}

.container {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 20px;
}

#sticky-nav {
  position: sticky;
  top: 20px;
  z-index: 1000;
  display: flex;
  justify-content: center;
  width: auto;
  margin-bottom: 30px;
  padding: 10px 0;
}

.nav-content {
  background: rgba(30, 30, 30, 0.95);
  /* Fallback / Mobile: Solid/Darker background, no blur for performance */
  padding: 12px 25px;
  border-radius: 50px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
  border: 1px solid rgba(255, 255, 255, 0.15);
  display: flex;
  gap: 15px;
}

select {
  background: transparent;
  width: 150px;
  color: var(--text-primary);
  border: 1px solid rgba(255, 255, 255, 0.2);
  padding: 8px 15px;
  border-radius: 20px;
  font-family: var(--font-sans);
  cursor: pointer;
  outline: none;
  appearance: none;
  /* Custom styling */
  background-image: url("data:image/svg+xml;charset=US-ASCII,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20width%3D%22292.4%22%20height%3D%22292.4%22%3E%3Cpath%20fill%3D%22%23d4af37%22%20d%3D%22M287%2069.4a17.6%2017.6%200%200%200-13-5.4H18.4c-5%200-9.3%201.8-12.9%205.4A17.6%2017.6%200%200%200%200%2082.2c0%205%201.8%209.3%205.4%2012.9l128%20127.9c3.6%203.6%207.8%205.4%2012.8%205.4s9.2-1.8%2012.8-5.4L287%2095c3.5-3.5%205.4-7.8%205.4-12.8%200-5-1.9-9.2-5.5-12.8z%22%2F%3E%3C%2Fsvg%3E");
  background-repeat: no-repeat;
  background-position: right .7em top 50%;
  background-size: .65em auto;
  padding-right: 2.5em;
  transition: all 0.3s ease;
}

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

select:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

option {
  background: var(--card-bg);
  color: var(--text-primary);
}

h1 {
  font-family: var(--font-serif);
  font-size: 3rem;
  color: var(--accent-gold);
  margin-bottom: 10px;
  letter-spacing: 2px;
}

.subtitle {
  color: var(--text-secondary);
  font-size: 1.1rem;
  letter-spacing: 1px;
  text-transform: uppercase;
}

.sutra-list {
  display: flex;
  flex-direction: column;
  gap: 40px;
}

.sutra-card {
  background-color: var(--card-bg);
  border-radius: 12px;
  padding: 40px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  border: 1px solid rgba(255, 255, 255, 0.05);
  /* Ensure scrolling lands below the sticky header */
  scroll-margin-top: 120px;
}

.sutra-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.4);
  border-color: var(--accent-gold-dim);
}

.sutra-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  padding-bottom: 15px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.sutra-id {
  font-family: var(--font-serif);
  color: var(--accent-gold);
  font-size: 1.5rem;
  font-weight: bold;
}

.pada-name {
  color: var(--text-secondary);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.sutra-content {
  display: flex;
  flex-direction: column;
  gap: 30px;
}

.sanskrit-section {
  text-align: center;
  padding-bottom: 20px;
  border-bottom: 1px dashed rgba(255, 255, 255, 0.1);
}

.pronunciation-kr {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-top: 5px;
  font-family: var(--font-kr);
  opacity: 0.8;
}

.audio-player {
  margin-top: 15px;
  display: flex;
  justify-content: center;
  width: 100%;
}

audio {
  width: 100%;
  max-width: 100%;
  height: 40px;
  border-radius: 20px;
  filter: invert(0.9);
  /* Invert colors to match dark theme better */
}

.sanskrit,
.pronunciation {
  overflow-wrap: break-word;
  word-wrap: break-word;
  hyphens: auto;
  max-width: 100%;
  line-height: 1.6;
  word-break: keep-all;
  /* Ensure consistency */
}

.sanskrit {
  font-size: 1.3rem;
  margin-bottom: 10px;
  font-weight: 500;
  color: #fff;
}

.pronunciation {
  font-style: italic;
  color: var(--text-primary);
  opacity: 0.9;
}

@media (max-width: 600px) {
  .sanskrit {
    font-size: 1.1rem;
    line-height: 1.5;
  }

  .pronunciation {
    font-size: 0.95rem;
  }

  .sutra-card {
    padding: 20px;
  }

  h1 {
    font-size: 2rem;
  }
}


.translations-container {
  display: flex;
  flex-direction: column;
  gap: 25px;
}

.translation-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.translation-text {
  font-size: 1.1rem;
  color: #e0e0e0;
  line-height: 1.6;
  word-break: keep-all;
  overflow-wrap: break-word;
}

.translation-text.english {
  font-family: var(--font-serif);
  padding-left: 15px;
  border-left: 2px solid var(--accent-gold);
}

.translation-text.korean {
  font-family: var(--font-kr);
  background: rgba(255, 255, 255, 0.03);
  padding: 15px;
  border-radius: 6px;
  color: #d0d0d0;
}

/* Oxford Section Styles */
.oxford-container {
  margin-top: 30px;
  padding: 20px;
  background-color: #252525;
  border: 1px solid var(--accent-gold-dim);
  border-radius: 8px;
  box-shadow: inset 0 2px 5px rgba(0, 0, 0, 0.3);
}

.oxford-header {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  color: var(--accent-gold);
  margin-bottom: 15px;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(212, 175, 55, 0.2);
  letter-spacing: 0.05em;
  font-weight: 600;
}

.oxford-item {
  margin-bottom: 20px;
}

.oxford-item:last-child {
  margin-bottom: 0;
}

/* Bae Chul-hyun Section Styles */
.bae-container {
  margin-top: 20px;
  padding: 20px;
  background-color: #252525;
  border: 1px solid #8a8a8a;
  /* Different border color to distinguish or similar? Let's use a neutral/silver tone or just match gold dim */
  border-color: var(--accent-gold-dim);
  border-radius: 8px;
  box-shadow: inset 0 2px 5px rgba(0, 0, 0, 0.3);
}

.bae-header {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  color: var(--accent-gold);
  margin-bottom: 15px;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(138, 112, 32, 0.2);
  letter-spacing: 0.05em;
  font-weight: 600;
}

.bae-item {
  margin-bottom: 20px;
}

.audio-placeholder {
  display: flex;
  justify-content: center;
  width: 100%;
  margin-top: 10px;
}

.play-btn {
  background-color: rgba(30, 30, 30, 0.6);
  color: var(--accent-gold);
  border: 1px solid var(--accent-gold-dim);
  padding: 8px 16px;
  border-radius: 20px;
  cursor: pointer;
  font-family: var(--font-sans);
  font-size: 0.9rem;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  gap: 8px;
}

.play-btn:hover {
  background-color: var(--accent-gold-dim);
  color: #fff;
  transform: translateY(-2px);
}

@media (min-width: 768px) {
  .nav-content {
    background: rgba(30, 30, 30, 0.85);
    backdrop-filter: blur(15px);
  }
}