/* Exploring the Analects - Classical Academic Style */

:root {
  --bg-warm-white: #f5f5f0;
  --bg-section: #e8e8e0;
  --text-primary: #2c3e50;
  --text-secondary: #5d6d7e;
  --accent-blue-grey: #5d7a8c;
  --accent-bronze: #8b7355;
  --accent-light-bronze: #b89968;
  --border-color: #d0d0c8;
  --hover-bg: #fafaf5;
}

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

body {
  font-family: 'Crimson Text', Georgia, serif;
  font-size: 18px;
  line-height: 1.8;
  color: var(--text-primary);
  background-color: var(--bg-warm-white);
  padding: 0;
  margin: 0;
}

/* Typography */
h1, h2, h3, h4 {
  font-family: 'Garamond', 'Baskerville', serif;
  font-weight: 400;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

h1 {
  font-size: 2.8rem;
  letter-spacing: 0.5px;
}

h2 {
  font-size: 2rem;
  margin-top: 2.5rem;
}

h3 {
  font-size: 1.5rem;
  margin-top: 2rem;
}

/* Header */
header {
  background: linear-gradient(135deg, #4a6374 0%, #5d7a8c 50%, #7d95a8 100%);
  color: white;
  padding: 3rem 2rem 2.5rem;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

header.scrolled {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 0;
  box-shadow: 0 2px 12px rgba(0,0,0,0.15);
}

.header-image {
  display: none;
}

.header-content {
  max-width: 1100px;
  margin: 0 auto;
  text-align: center;
}

header.scrolled .header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  text-align: left;
  padding: 0.8rem 2rem;
  max-width: 100%;
}

.site-title-link {
  text-decoration: none;
  color: inherit;
  display: block;
  cursor: pointer;
}

.site-title-link:hover .site-title {
  opacity: 0.85;
}

.site-title {
  font-size: 3.5rem;
  margin-bottom: 1rem;
  font-weight: 300;
  letter-spacing: 2px;
  line-height: 1.2;
}

header.scrolled .site-title {
  font-size: 1.5rem;
  margin-bottom: 0;
  letter-spacing: 1px;
  line-height: 1.4;
}

.site-subtitle {
  font-size: 1.3rem;
  font-weight: 300;
  opacity: 0.95;
  font-style: italic;
  line-height: 1.5;
}

header.scrolled .site-subtitle {
  display: none;
}

/* Navigation */
nav {
  background-color: var(--bg-section);
  border-bottom: 2px solid var(--border-color);
  padding: 1rem 0;
}

header.scrolled nav {
  background-color: transparent;
  border-bottom: none;
  padding: 0;
}

nav ul {
  list-style: none;
  display: flex;
  justify-content: center;
  gap: 2.5rem;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 2rem;
}

header.scrolled nav ul {
  gap: 2rem;
  padding: 0;
  margin: 0;
}

nav a {
  text-decoration: none;
  color: var(--accent-blue-grey);
  font-weight: 500;
  transition: color 0.3s;
  font-size: 1.1rem;
}

header.scrolled nav a {
  color: white;
  font-size: 1rem;
}

nav a:hover {
  color: var(--accent-bronze);
}

header.scrolled nav a:hover {
  color: var(--accent-light-bronze);
}

.listen-now-link {
  background-color: var(--accent-blue-grey);
  color: white !important;
  padding: 0.5rem 1.2rem;
  border-radius: 4px;
  transition: background-color 0.3s;
}

.listen-now-link:hover {
  background-color: var(--accent-bronze) !important;
  color: white !important;
}

header.scrolled .listen-now-link {
  background-color: rgba(255,255,255,0.2);
  padding: 0.4rem 1rem;
}

header.scrolled .listen-now-link:hover {
  background-color: rgba(255,255,255,0.3) !important;
}

/* Spacer for fixed header */
body.header-fixed {
  padding-top: 0;
}

.header-spacer {
  height: 0;
}

body.header-fixed .header-spacer {
  height: 60px;
}

/* Main Container */
.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 3rem 2rem;
}

/* Introduction Section */
.intro-section {
  background-color: white;
  padding: 2.5rem;
  margin-bottom: 3rem;
  border: 1px solid var(--border-color);
  box-shadow: 0 1px 4px rgba(0,0,0,0.05);
}

.intro-section p {
  margin-bottom: 1rem;
}

.intro-section p:last-child {
  margin-bottom: 0;
}

/* Episode List */
.episode-list {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.episode-card {
  background-color: white;
  border: 1px solid var(--border-color);
  padding: 2rem;
  transition: box-shadow 0.3s, transform 0.3s;
  text-decoration: none;
  color: inherit;
  display: block;
  position: relative;
}

.episode-card:hover {
  box-shadow: 0 4px 12px rgba(0,0,0,0.08);
  transform: translateY(-2px);
}

.episode-card:hover .episode-listen {
  color: var(--accent-bronze);
}

.episode-number {
  color: var(--accent-bronze);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  margin-bottom: 0.5rem;
  text-transform: uppercase;
}

.episode-title {
  font-size: 1.8rem;
  margin-bottom: 0.8rem;
  color: var(--text-primary);
}

.episode-passage {
  font-family: 'Noto Serif SC', 'SimSun', serif;
  font-size: 1.6rem;
  color: var(--accent-blue-grey);
  margin-bottom: 0.5rem;
  letter-spacing: 2px;
}

.episode-translation {
  font-style: italic;
  color: var(--text-secondary);
  margin-bottom: 1rem;
  font-size: 1.05rem;
}

.episode-description {
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 0;
}

.episode-listen {
  color: var(--accent-blue-grey);
  font-weight: 600;
  font-size: 1rem;
  margin-top: 1rem;
  transition: color 0.3s;
}

/* Episode Page */
.episode-header {
  background-color: white;
  padding: 3rem 2.5rem;
  margin-bottom: 2rem;
  border: 1px solid var(--border-color);
  border-left: 4px solid var(--accent-bronze);
}

.episode-meta {
  color: var(--accent-bronze);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  margin-bottom: 1rem;
  text-transform: uppercase;
}

.chinese-passage {
  font-family: 'Noto Serif SC', 'SimSun', serif;
  font-size: 2.2rem;
  line-height: 1.8;
  margin: 2rem 0;
  padding: 2rem;
  background-color: var(--bg-section);
  text-align: center;
  letter-spacing: 4px;
}

.chinese-char {
  position: relative;
  cursor: help;
  transition: color 0.2s;
}

.chinese-char:hover {
  color: var(--accent-bronze);
}

.char-tooltip {
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--text-primary);
  color: white;
  padding: 0.8rem 1.2rem;
  border-radius: 4px;
  font-size: 0.85rem;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s;
  margin-bottom: 0.5rem;
  z-index: 999;
  font-family: 'Crimson Text', Georgia, serif;
  letter-spacing: 0;
  line-height: 1.4;
  box-shadow: 0 4px 8px rgba(0,0,0,0.2);
}

.char-tooltip::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  border: 6px solid transparent;
  border-top-color: var(--text-primary);
}

.chinese-char:hover .char-tooltip,
.chinese-char.active .char-tooltip {
  opacity: 1;
}

.hover-hint {
  font-family: 'Crimson Text', Georgia, serif;
  font-size: 0.9rem;
  color: var(--text-secondary);
  font-style: italic;
  margin-bottom: 1rem;
  opacity: 0.8;
}

.pinyin {
  font-family: 'Crimson Text', Georgia, serif;
  font-size: 1.2rem;
  color: var(--accent-blue-grey);
  text-align: center;
  font-style: italic;
  margin-top: 1rem;
  letter-spacing: 1px;
}

.translation-box {
  background-color: white;
  padding: 2rem;
  margin: 2rem 0;
  border-left: 3px solid var(--accent-blue-grey);
  font-style: italic;
  font-size: 1.15rem;
}

/* Content Sections */
.content-section {
  background-color: white;
  padding: 2.5rem;
  margin-bottom: 2rem;
  border: 1px solid var(--border-color);
}

.content-section h2 {
  margin-top: 0;
  color: var(--accent-blue-grey);
  border-bottom: 2px solid var(--border-color);
  padding-bottom: 0.8rem;
  margin-bottom: 1.5rem;
}

.content-section h3 {
  color: var(--accent-bronze);
  margin-top: 2rem;
}

.content-section p {
  margin-bottom: 1.2rem;
}

.content-section em {
  color: var(--accent-blue-grey);
}

/* Back Navigation */
.back-link {
  display: inline-block;
  margin-bottom: 2rem;
  color: var(--accent-blue-grey);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s;
}

.back-link:hover {
  color: var(--accent-bronze);
}

.back-link::before {
  content: '← ';
}

/* Listening Section */
.listening-section {
  background-color: white;
  padding: 2rem;
  margin: 2rem 0;
  border: 1px solid var(--border-color);
  text-align: center;
}

.listening-section h3 {
  margin-bottom: 1.5rem;
  color: var(--accent-blue-grey);
}

.listening-section iframe {
  max-width: 100%;
  margin: 0 auto;
  display: block;
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.listen-links {
  display: flex;
  justify-content: center;
  gap: 2rem;
  margin-top: 1.5rem;
  flex-wrap: wrap;
}

.listen-button {
  display: inline-block;
  padding: 0.8rem 2rem;
  background-color: var(--accent-blue-grey);
  color: white;
  text-decoration: none;
  border-radius: 4px;
  transition: background-color 0.3s;
  font-weight: 500;
}

.listen-button:hover {
  background-color: var(--accent-bronze);
}

/* Footer */
footer {
  background-color: var(--bg-section);
  border-top: 2px solid var(--border-color);
  padding: 2.5rem 2rem;
  margin-top: 4rem;
  text-align: center;
  color: var(--text-secondary);
}

footer p {
  margin-bottom: 0.5rem;
}

/* Responsive Design */
@media (max-width: 768px) {
  header {
    padding: 2rem 1.5rem 1.5rem;
  }

  header.scrolled {
    padding: 0;
  }

  .header-content {
    padding: 0;
  }

  .site-title-link {
    width: 100%;
  }

  header.scrolled .header-content {
    flex-direction: column;
    padding: 0.6rem 1rem;
    gap: 0.5rem;
  }

  header.scrolled .site-title-link {
    display: none;
  }

  .site-title {
    font-size: 2rem;
    letter-spacing: 1px;
    margin-bottom: 0.8rem;
    line-height: 1.1;
  }

  header.scrolled .site-title {
    font-size: 1.2rem;
    margin-bottom: 0;
    line-height: 1.3;
  }

  .site-subtitle {
    font-size: 1rem;
    line-height: 1.4;
  }

  nav ul {
    flex-direction: row;
    flex-wrap: nowrap;
    gap: 0.5rem;
    justify-content: center;
    padding: 0 0.5rem;
  }

  header.scrolled nav ul {
    gap: 0.5rem;
    padding: 0;
  }

  nav a {
    font-size: 0.9rem;
    white-space: nowrap;
  }

  header.scrolled nav a {
    font-size: 0.8rem;
  }

  body.header-fixed .header-spacer {
    height: 90px;
  }

  h1 {
    font-size: 2rem;
  }

  h2 {
    font-size: 1.6rem;
  }

  .container {
    padding: 2rem 1rem;
  }

  .episode-card,
  .content-section,
  .intro-section {
    padding: 1.5rem;
  }

  .chinese-passage {
    font-size: 1.6rem;
    padding: 1.5rem;
    letter-spacing: 2px;
  }

  .listen-links {
    flex-direction: column;
    align-items: center;
  }

  .listen-now-link {
    font-size: 0.85rem;
    padding: 0.35rem 0.75rem;
  }

  header.scrolled .listen-now-link {
    font-size: 0.75rem;
    padding: 0.3rem 0.65rem;
  }
}

/* Extra small screens */
@media (max-width: 400px) {
  nav ul {
    gap: 0.3rem;
  }

  header.scrolled nav ul {
    gap: 0.3rem;
  }

  nav a {
    font-size: 0.8rem;
  }

  header.scrolled nav a {
    font-size: 0.7rem;
  }

  .listen-now-link {
    font-size: 0.75rem;
    padding: 0.3rem 0.6rem;
  }

  header.scrolled .listen-now-link {
    font-size: 0.7rem;
    padding: 0.25rem 0.5rem;
  }
}

/* Web Fonts Import */
@import url('https://fonts.googleapis.com/css2?family=Crimson+Text:ital,wght@0,400;0,600;1,400&family=Noto+Serif+SC:wght@400;500;600&display=swap');