:root {
  --bg-primary: #faf8f5;
  --bg-secondary: #ffffff;
  --bg-tertiary: #f5f2ed;
  --text-primary: #1a1a1a;
  --text-secondary: #4a4a4a;
  --text-muted: #888888;
  --accent: #c41e3a;
  --accent-hover: #a01830;
  --accent-light: rgba(196, 30, 58, 0.08);
  --accent-glow: rgba(196, 30, 58, 0.15);
  --accent-gradient: linear-gradient(135deg, #c41e3a 0%, #e85d75 100%);
  --border: #e8e4df;
  --card-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
  --card-shadow-hover: 0 12px 40px rgba(0, 0, 0, 0.12);
  --header-bg: rgba(250, 248, 245, 0.85);
  --code-bg: #f5f2ed;
  --tag-bg: #f0ebe3;
  --ad-bg: #f0ebe3;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.dark {
  --bg-primary: #0f0f0f;
  --bg-secondary: #1a1a1a;
  --bg-tertiary: #222222;
  --text-primary: #f0ece8;
  --text-secondary: #ccc8c0;
  --text-muted: #888076;
  --accent: #e84a5f;
  --accent-hover: #d43a4f;
  --accent-light: rgba(232, 74, 95, 0.12);
  --accent-glow: rgba(232, 74, 95, 0.2);
  --accent-gradient: linear-gradient(135deg, #e84a5f 0%, #ff8a9b 100%);
  --border: #2a2a2a;
  --card-shadow: 0 2px 12px rgba(0, 0, 0, 0.3);
  --card-shadow-hover: 0 12px 40px rgba(0, 0, 0, 0.5);
  --header-bg: rgba(15, 15, 15, 0.85);
  --code-bg: #222222;
  --tag-bg: #2a2a2a;
  --ad-bg: #222222;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  transition: background var(--transition), color var(--transition);
  min-height: 100vh;
  overflow-x: hidden;
}

body:not(.loaded) {
  opacity: 0;
}

body.loaded {
  animation: fadeIn 0.6s ease-out;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes slideDown {
  from { opacity: 0; transform: translateY(-12px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-8px); }
}

@keyframes shimmer {
  0% { background-position: -200% center; }
  100% { background-position: 200% center; }
}

@keyframes gradientFlow {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.95); }
  to { opacity: 1; transform: scale(1); }
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.chinese-font {
  font-family: 'Noto Serif SC', 'Songti SC', 'SimSun', serif;
}

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

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--header-bg);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--border);
  transition: background var(--transition), border-color var(--transition);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.site-logo {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--accent);
  text-decoration: none;
  letter-spacing: -0.5px;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: transform var(--transition);
}

.site-logo:hover {
  transform: scale(1.03);
}

.site-logo span {
  font-family: 'Noto Serif SC', serif;
  font-weight: 700;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  text-decoration: none;
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color var(--transition);
  position: relative;
  padding: 4px 0;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--accent-gradient);
  border-radius: 2px;
  transition: all var(--transition);
  transform: translateX(-50%);
}

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

.nav-links a:hover::after {
  width: 100%;
}

.nav-links a.active {
  color: var(--accent);
  font-weight: 600;
}

.nav-links a.active::after {
  width: 100%;
}

.theme-toggle {
  background: none;
  border: 1px solid var(--border);
  border-radius: 10px;
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--text-secondary);
  font-size: 1.1rem;
  transition: all var(--transition);
}

.theme-toggle:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-light);
  transform: rotate(15deg);
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: 1px solid var(--border);
  border-radius: 10px;
  width: 38px;
  height: 38px;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--text-secondary);
  font-size: 1.2rem;
  transition: all var(--transition);
}

.mobile-menu-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* Hero Section */
.hero {
  text-align: center;
  padding: 100px 20px 80px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -60%;
  left: -30%;
  width: 160%;
  height: 160%;
  background: radial-gradient(ellipse at center, var(--accent-light) 0%, transparent 55%);
  opacity: 0.6;
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  top: 10%;
  right: -10%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(196, 30, 58, 0.04) 0%, transparent 70%);
  pointer-events: none;
  animation: float 6s ease-in-out infinite;
}

.hero h1 {
  font-family: 'Noto Serif SC', serif;
  font-size: 3.5rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
  position: relative;
  animation: slideUp 0.8s ease-out;
}

.hero h1 .highlight {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  position: relative;
}

.hero-subtitle {
  font-size: 1.2rem;
  color: var(--text-secondary);
  margin-bottom: 40px;
  position: relative;
  animation: slideUp 0.8s ease-out 0.15s both;
  letter-spacing: 1px;
}

/* Search Box */
.search-container {
  max-width: 640px;
  margin: 0 auto 20px;
  position: relative;
}

.search-box {
  display: flex;
  align-items: center;
  background: var(--bg-secondary);
  border: 2px solid var(--border);
  border-radius: 18px;
  padding: 6px 6px 6px 20px;
  transition: all var(--transition);
  box-shadow: var(--card-shadow);
  animation: slideUp 0.8s ease-out 0.3s both;
}

.search-box:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-glow), 0 8px 32px rgba(196, 30, 58, 0.1);
}

.search-box input {
  flex: 1;
  border: none;
  background: none;
  outline: none;
  font-size: 1.05rem;
  color: var(--text-primary);
  padding: 12px 0;
  font-family: inherit;
}

.search-box input::placeholder {
  color: var(--text-muted);
}

.search-box button {
  background: var(--accent-gradient);
  color: white;
  border: none;
  border-radius: 12px;
  padding: 12px 28px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
  letter-spacing: 0.3px;
}

.search-box button:hover {
  opacity: 0.9;
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(196, 30, 58, 0.3);
}

.search-box button:active {
  transform: translateY(0);
}

/* Autocomplete dropdown */
.autocomplete-list {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  right: 0;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: var(--card-shadow-hover);
  max-height: 360px;
  overflow-y: auto;
  z-index: 100;
  display: none;
  animation: slideDown 0.25s ease-out;
  backdrop-filter: blur(12px);
}

.autocomplete-list.active {
  display: block;
}

.autocomplete-item {
  padding: 14px 20px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 14px;
  transition: all 0.15s;
  border-bottom: 1px solid var(--border);
}

.autocomplete-item:last-child {
  border-bottom: none;
}

.autocomplete-item:hover,
.autocomplete-item.highlighted {
  background: var(--accent-light);
}

.autocomplete-item .char {
  font-family: 'Noto Serif SC', serif;
  font-size: 1.4rem;
  color: var(--text-primary);
  flex-shrink: 0;
  width: 36px;
  text-align: center;
}

.autocomplete-item .info {
  flex: 1;
  min-width: 0;
}

.autocomplete-item .info .pinyin {
  font-size: 0.85rem;
  color: var(--accent);
  font-weight: 500;
}

.autocomplete-item .info .meaning {
  font-size: 0.82rem;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.autocomplete-item .type-badge {
  font-size: 0.7rem;
  padding: 3px 10px;
  border-radius: 8px;
  background: var(--accent-light);
  color: var(--accent);
  font-weight: 600;
  flex-shrink: 0;
}

/* Hot Search Tags */
.hot-searches {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  margin-top: 28px;
  position: relative;
  animation: slideUp 0.8s ease-out 0.45s both;
}

.hot-searches .label {
  font-size: 0.85rem;
  color: var(--text-muted);
  padding: 4px 0;
  margin-right: 4px;
}

.hot-tag {
  display: inline-block;
  padding: 6px 16px;
  background: var(--tag-bg);
  color: var(--text-secondary);
  border-radius: 24px;
  font-size: 0.85rem;
  text-decoration: none;
  transition: all var(--transition);
  border: 1px solid transparent;
}

.hot-tag:hover {
  background: var(--accent);
  color: white;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(196, 30, 58, 0.2);
  border-color: var(--accent);
}

/* Stats Section */
.stats-bar {
  display: flex;
  justify-content: center;
  gap: 48px;
  padding: 40px 20px 0;
  position: relative;
  animation: slideUp 0.8s ease-out 0.6s both;
}

.stat-item {
  text-align: center;
}

.stat-number {
  font-size: 2rem;
  font-weight: 800;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.2;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 2px;
}

/* Feature Cards */
.features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  padding: 20px 0 60px;
  max-width: 1200px;
  margin: 0 auto;
}

.feature-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 40px 32px;
  text-align: center;
  transition: all var(--transition);
  box-shadow: var(--card-shadow);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--accent-gradient);
  opacity: 0;
  transition: opacity var(--transition);
}

.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--card-shadow-hover);
  border-color: transparent;
}

.feature-card:hover::before {
  opacity: 1;
}

.feature-icon {
  font-size: 2.8rem;
  margin-bottom: 20px;
  display: block;
  filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.1));
}

.feature-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--text-primary);
}

.feature-card p {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.feature-card .feature-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 18px;
  color: var(--accent);
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  transition: gap var(--transition);
}

.feature-card .feature-link:hover {
  gap: 10px;
}

.feature-card .feature-link::after {
  content: '\2192';
}

/* Section Titles */
.section-title {
  text-align: center;
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: 40px;
  color: var(--text-primary);
  position: relative;
}

.section-title::after {
  content: '';
  display: block;
  width: 40px;
  height: 3px;
  background: var(--accent-gradient);
  border-radius: 2px;
  margin: 12px auto 0;
}

/* Popular Characters Section */
.popular-section {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px 60px;
}

.popular-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
  gap: 12px;
}

.popular-char {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 20px 8px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 16px;
  text-decoration: none;
  transition: all var(--transition);
  box-shadow: var(--card-shadow);
}

.popular-char:hover {
  transform: translateY(-3px);
  box-shadow: var(--card-shadow-hover);
  border-color: var(--accent);
}

.popular-char .char {
  font-family: 'Noto Serif SC', serif;
  font-size: 2rem;
  color: var(--text-primary);
  line-height: 1;
}

.popular-char .meaning {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-align: center;
  line-height: 1.3;
}

/* Ad containers */
.ad-container {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 20px 0;
}

.ad-placeholder {
  background: var(--ad-bg);
  border: 2px dashed var(--border);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 0.85rem;
  font-weight: 500;
  transition: all var(--transition);
}

.ad-banner {
  width: 728px;
  height: 90px;
}

.ad-sidebar {
  width: 300px;
  height: 250px;
}

.ad-rectangle {
  width: 300px;
  height: 250px;
}

.ad-placeholder:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* Footer */
.site-footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  padding: 56px 20px 36px;
  margin-top: 80px;
  transition: background var(--transition);
  position: relative;
}

.site-footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 120px;
  height: 3px;
  background: var(--accent-gradient);
  border-radius: 0 0 2px 2px;
}

.footer-grid {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
}

.footer-brand h4 {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--accent);
  margin-bottom: 12px;
}

.footer-brand p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.7;
}

.footer-col h5 {
  font-size: 0.9rem;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--text-primary);
}

.footer-col ul {
  list-style: none;
}

.footer-col ul li {
  margin-bottom: 10px;
}

.footer-col ul a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  transition: all var(--transition);
  position: relative;
}

.footer-col ul a:hover {
  color: var(--accent);
  padding-left: 4px;
}

.footer-bottom {
  max-width: 1200px;
  margin: 36px auto 0;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.84rem;
  color: var(--text-muted);
}

/* Page Header */
.page-header {
  padding: 56px 20px 36px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-header::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -30%;
  width: 160%;
  height: 160%;
  background: radial-gradient(ellipse at center, var(--accent-light) 0%, transparent 55%);
  opacity: 0.5;
  pointer-events: none;
}

.page-header h1 {
  font-family: 'Noto Serif SC', serif;
  font-size: 2.2rem;
  font-weight: 700;
  margin-bottom: 8px;
  position: relative;
}

.page-header p {
  color: var(--text-secondary);
  font-size: 1.05rem;
  position: relative;
}

/* Content Layout */
.content-layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 32px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px 60px;
}

.content-main {
  min-width: 0;
}

.content-sidebar {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

/* Result Card (Dictionary / Character / Idiom) */
.result-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 40px;
  box-shadow: var(--card-shadow);
  animation: scaleIn 0.4s ease-out;
  position: relative;
  overflow: hidden;
}

.result-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--accent-gradient);
}

.result-header {
  display: flex;
  align-items: flex-start;
  gap: 24px;
  margin-bottom: 32px;
  flex-wrap: wrap;
}

.result-char {
  font-family: 'Noto Serif SC', serif;
  font-size: 4.5rem;
  line-height: 1.1;
  color: var(--text-primary);
  flex-shrink: 0;
  position: relative;
}

.result-char-details {
  flex: 1;
  min-width: 0;
}

.result-pinyin {
  font-size: 1.4rem;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 6px;
}

.result-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 6px;
}

.meta-tag {
  display: inline-block;
  padding: 4px 12px;
  background: var(--accent-light);
  color: var(--accent);
  border-radius: 8px;
  font-size: 0.82rem;
  font-weight: 500;
}

.result-section {
  margin-top: 28px;
  padding-top: 28px;
  border-top: 1px solid var(--border);
}

.result-section h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.result-section h3::before {
  content: '';
  display: inline-block;
  width: 4px;
  height: 18px;
  background: var(--accent-gradient);
  border-radius: 2px;
}

.definition-list {
  list-style: none;
}

.definition-list li {
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
  display: flex;
  gap: 12px;
  align-items: baseline;
  transition: background var(--transition);
}

.definition-list li:last-child {
  border-bottom: none;
}

.definition-list li:hover {
  background: var(--accent-light);
  border-radius: 8px;
  padding-left: 8px;
}

.definition-list .pos {
  font-size: 0.75rem;
  padding: 3px 10px;
  border-radius: 6px;
  background: var(--tag-bg);
  color: var(--text-muted);
  flex-shrink: 0;
  font-weight: 600;
  text-transform: lowercase;
}

.definition-list .meaning {
  font-size: 0.97rem;
  color: var(--text-primary);
}

.example-item {
  padding: 16px 20px;
  background: var(--bg-tertiary);
  border-radius: 14px;
  margin-bottom: 12px;
  border-left: 3px solid var(--accent);
  transition: all var(--transition);
}

.example-item:hover {
  transform: translateX(4px);
}

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

.example-item .chinese {
  font-family: 'Noto Serif SC', serif;
  font-size: 1.08rem;
  margin-bottom: 3px;
}

.example-item .pinyin {
  font-size: 0.87rem;
  color: var(--text-muted);
  margin-bottom: 3px;
  font-style: italic;
}

.example-item .english {
  font-size: 0.92rem;
  color: var(--text-secondary);
}

.related-words {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.related-word {
  display: inline-block;
  padding: 6px 14px;
  background: var(--accent-light);
  color: var(--accent);
  border-radius: 10px;
  font-size: 0.92rem;
  text-decoration: none;
  font-family: 'Noto Serif SC', serif;
  transition: all var(--transition);
  border: 1px solid transparent;
}

.related-word:hover {
  background: var(--accent);
  color: white;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(196, 30, 58, 0.2);
}

/* Idiom specific */
.idiom-char {
  font-family: 'Noto Serif SC', serif;
  font-size: 2.5rem;
  line-height: 1.3;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.idiom-pinyin {
  font-size: 1.15rem;
  color: var(--accent);
  font-weight: 500;
  margin-bottom: 20px;
}

.meaning-box {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin: 20px 0;
}

.meaning-box .box {
  padding: 20px;
  border-radius: 14px;
  background: var(--bg-tertiary);
  transition: all var(--transition);
  border: 1px solid var(--border);
}

.meaning-box .box:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}

.meaning-box .box-label {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.meaning-box .box-content {
  font-size: 0.97rem;
  color: var(--text-primary);
}

.origin-box {
  padding: 20px;
  background: var(--accent-light);
  border-radius: 14px;
  margin: 20px 0;
  font-size: 0.93rem;
  color: var(--text-secondary);
  line-height: 1.7;
  border-left: 3px solid var(--accent);
}

.synonym-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.synonym-tag {
  display: inline-block;
  padding: 5px 14px;
  border-radius: 10px;
  font-size: 0.9rem;
  font-family: 'Noto Serif SC', serif;
  transition: all var(--transition);
}

.synonym-tag.synonym {
  background: rgba(34, 197, 94, 0.1);
  color: #16a34a;
}

.dark .synonym-tag.synonym {
  background: rgba(34, 197, 94, 0.15);
  color: #4ade80;
}

.synonym-tag.antonym {
  background: rgba(239, 68, 68, 0.1);
  color: #dc2626;
}

.dark .synonym-tag.antonym {
  background: rgba(239, 68, 68, 0.15);
  color: #f87171;
}

/* Stroke order animation */
.stroke-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}

.stroke-canvas {
  width: 220px;
  height: 220px;
  border: 2px solid var(--border);
  border-radius: 16px;
  background: var(--bg-primary);
  transition: border-color var(--transition);
}

.stroke-canvas:hover {
  border-color: var(--accent);
}

.stroke-controls {
  display: flex;
  align-items: center;
  gap: 12px;
}

.stroke-btn {
  padding: 8px 18px;
  border: 1px solid var(--border);
  background: var(--bg-secondary);
  color: var(--text-primary);
  border-radius: 10px;
  cursor: pointer;
  font-size: 0.87rem;
  font-weight: 500;
  transition: all var(--transition);
}

.stroke-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-1px);
}

.stroke-btn.primary {
  background: var(--accent-gradient);
  color: white;
  border-color: transparent;
}

.stroke-btn.primary:hover {
  opacity: 0.9;
  box-shadow: 0 4px 12px rgba(196, 30, 58, 0.3);
}

.stroke-counter {
  font-size: 0.92rem;
  color: var(--text-muted);
  font-weight: 500;
  min-width: 50px;
  text-align: center;
}

/* Empty state */
.empty-state {
  text-align: center;
  padding: 80px 20px;
}

.empty-state .icon {
  font-size: 4rem;
  margin-bottom: 20px;
  display: block;
  animation: float 3s ease-in-out infinite;
}

.empty-state h2 {
  font-size: 1.4rem;
  margin-bottom: 10px;
}

.empty-state p {
  color: var(--text-secondary);
  font-size: 1rem;
}

/* About page */
.about-content {
  max-width: 800px;
  margin: 0 auto;
}

.about-section {
  margin-bottom: 40px;
}

.about-section h2 {
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.about-section h2::before {
  content: '';
  display: inline-block;
  width: 4px;
  height: 22px;
  background: var(--accent-gradient);
  border-radius: 2px;
}

.about-section p, .about-section li {
  font-size: 0.97rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 12px;
}

/* Privacy page */
.privacy-content {
  max-width: 800px;
  margin: 0 auto;
}

.privacy-content h2 {
  font-size: 1.35rem;
  font-weight: 700;
  margin: 28px 0 14px;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.privacy-content h2::before {
  content: '';
  display: inline-block;
  width: 4px;
  height: 22px;
  background: var(--accent-gradient);
  border-radius: 2px;
}

.privacy-content h3 {
  font-size: 1.08rem;
  font-weight: 600;
  margin: 20px 0 10px;
  color: var(--text-primary);
}

.privacy-content p, .privacy-content li {
  font-size: 0.97rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 10px;
}

/* Loading spinner */
.loading-spinner {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 80px 20px;
}

.spinner {
  width: 44px;
  height: 44px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.loading-spinner p {
  margin-top: 16px;
  color: var(--text-muted);
  font-size: 0.92rem;
}

/* Not found */
.not-found {
  text-align: center;
  padding: 80px 20px;
}

.not-found .icon {
  font-size: 4rem;
  margin-bottom: 16px;
  display: block;
}

.not-found h2 {
  font-size: 1.4rem;
  margin-bottom: 8px;
}

.not-found p {
  color: var(--text-secondary);
}

/* Breadcrumb */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.87rem;
  color: var(--text-muted);
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.breadcrumb a {
  color: var(--text-muted);
  text-decoration: none;
  transition: color var(--transition);
}

.breadcrumb a:hover {
  color: var(--accent);
}

.breadcrumb .sep {
  color: var(--text-muted);
}

/* Mobile ad */
.mobile-ad {
  display: none;
}

/* Scroll to top */
.scroll-top {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--accent-gradient);
  color: white;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  box-shadow: 0 4px 20px rgba(196, 30, 58, 0.3);
  transition: all var(--transition);
  opacity: 0;
  pointer-events: none;
  z-index: 40;
}

.scroll-top.visible {
  opacity: 1;
  pointer-events: auto;
}

.scroll-top:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 28px rgba(196, 30, 58, 0.4);
}

/* Responsive */
@media (max-width: 1024px) {
  .content-layout {
    grid-template-columns: 1fr;
  }
  .content-sidebar {
    display: none;
  }
  .mobile-ad {
    display: flex;
    margin: 24px 0;
  }
  .ad-banner {
    width: 100%;
    max-width: 728px;
    height: 90px;
  }
  .stats-bar {
    gap: 32px;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    padding: 20px 24px;
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
    box-shadow: var(--card-shadow-hover);
    animation: slideDown 0.3s ease-out;
  }
  .nav-links.open {
    display: flex;
  }
  .mobile-menu-btn {
    display: flex;
  }
  .hero {
    padding: 60px 16px;
  }
  .hero h1 {
    font-size: 2.2rem;
  }
  .hero-subtitle {
    font-size: 1rem;
  }
  .features {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .footer-bottom {
    flex-direction: column;
    gap: 10px;
    text-align: center;
  }
  .meaning-box {
    grid-template-columns: 1fr;
  }
  .result-card {
    padding: 28px;
  }
  .result-header {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }
  .result-char {
    font-size: 3.5rem;
  }
  .page-header h1 {
    font-size: 1.6rem;
  }
  .page-header {
    padding: 40px 20px 28px;
  }
  .ad-banner {
    width: 100%;
    max-width: 320px;
    height: 100px;
  }
  .ad-sidebar {
    width: 100%;
    max-width: 300px;
  }
  .stats-bar {
    gap: 20px;
    flex-wrap: wrap;
  }
  .stat-number {
    font-size: 1.5rem;
  }
  .popular-grid {
    grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
  }
  .popular-char {
    padding: 14px 6px;
  }
  .popular-char .char {
    font-size: 1.6rem;
  }
}

@media (max-width: 480px) {
  .hero {
    padding: 48px 16px 40px;
  }
  .hero h1 {
    font-size: 1.8rem;
  }
  .search-box {
    flex-direction: column;
    gap: 8px;
    padding: 14px;
    border-radius: 14px;
  }
  .search-box button {
    width: 100%;
    border-radius: 10px;
  }
  .result-char {
    font-size: 2.8rem;
  }
  .feature-card {
    padding: 28px 20px;
  }
  .result-card {
    padding: 20px;
    border-radius: 18px;
  }
  .stat-number {
    font-size: 1.3rem;
  }
}