/* ============================================
   九宫八卦 — 玄学命理网站 全局样式
   深色+朱红金+和风衬线+大留白
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+SC:wght@400;500;600;700;900&family=Noto+Serif+TC:wght@400;500;600;700;900&display=swap');

:root {
  /* 主色调 */
  --bg-deep:    #0a0a0f;
  --bg-dark:    #111118;
  --bg-card:    #16161f;
  --bg-hover:   #1c1c28;
  --bg-input:   #1a1a24;

  /* 朱红系 */
  --vermilion:      #c23a2e;
  --vermilion-light: #d4544a;
  --vermilion-dark: #8b1a12;
  --vermilion-glow: rgba(194,58,46,0.25);

  /* 金色系 */
  --gold:       #c9a96e;
  --gold-light: #e0c88a;
  --gold-dark:  #9a7a42;
  --gold-glow:  rgba(201,169,110,0.2);

  /* 文字 */
  --text-primary:   #e8e4df;
  --text-secondary: #9a9590;
  --text-muted:     #5a5550;
  --text-accent:    var(--gold);

  /* 边框 */
  --border:       #2a2a35;
  --border-light: #3a3a45;

  /* 字体 */
  --font-serif: 'Noto Serif SC', 'Noto Serif TC', '宋体', 'SimSun', serif;
  --font-sans:  'Noto Serif SC', 'Microsoft YaHei', sans-serif;

  /* 间距 */
  --space-xs:  4px;
  --space-sm:  8px;
  --space-md:  16px;
  --space-lg:  32px;
  --space-xl:  48px;
  --space-xxl: 80px;

  /* 动画 */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--font-serif);
  background: var(--bg-deep);
  color: var(--text-primary);
  line-height: 1.8;
  min-height: 100vh;
  overflow-x: hidden;
}

a { color: var(--gold); text-decoration: none; transition: color 0.3s; }
a:hover { color: var(--gold-light); }

::selection { background: var(--vermilion); color: #fff; }

/* === 星空背景 === */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(1px 1px at 10% 20%, rgba(201,169,110,0.4), transparent),
    radial-gradient(1px 1px at 30% 60%, rgba(201,169,110,0.3), transparent),
    radial-gradient(1.5px 1.5px at 50% 10%, rgba(201,169,110,0.5), transparent),
    radial-gradient(1px 1px at 70% 40%, rgba(201,169,110,0.3), transparent),
    radial-gradient(1px 1px at 90% 80%, rgba(201,169,110,0.4), transparent),
    radial-gradient(1.5px 1.5px at 20% 85%, rgba(194,58,46,0.3), transparent),
    radial-gradient(1px 1px at 60% 75%, rgba(201,169,110,0.25), transparent),
    radial-gradient(1px 1px at 80% 15%, rgba(201,169,110,0.35), transparent),
    radial-gradient(2px 2px at 45% 50%, rgba(201,169,110,0.15), transparent);
  pointer-events: none;
  z-index: 0;
  animation: starTwinkle 8s ease-in-out infinite alternate;
}

@keyframes starTwinkle {
  0% { opacity: 0.6; }
  100% { opacity: 1; }
}

/* === 装饰分割线 === */
.divider {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
  margin: var(--space-xl) auto;
  max-width: 400px;
}
.divider::before, .divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold-dark), transparent);
}
.divider .icon {
  color: var(--gold);
  font-size: 1.2rem;
  opacity: 0.8;
}

/* === 导航 === */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(10,10,15,0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: transform 0.4s var(--ease-out);
}

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-lg);
  height: 64px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--gold);
  letter-spacing: 0.15em;
}
.nav-logo .seal {
  width: 36px;
  height: 36px;
  border: 2px solid var(--vermilion);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  color: var(--vermilion-light);
  font-weight: 900;
  background: rgba(194,58,46,0.08);
}

.nav-links {
  display: flex;
  gap: var(--space-lg);
  list-style: none;
}
.nav-links a {
  color: var(--text-secondary);
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  position: relative;
  padding: 4px 0;
  transition: color 0.3s;
}
.nav-links a:hover,
.nav-links a.active {
  color: var(--gold);
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  width: 0;
  height: 1px;
  background: var(--gold);
  transition: all 0.3s var(--ease-out);
  transform: translateX(-50%);
}
.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

/* 移动端菜单 */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.5rem;
  cursor: pointer;
}

@media (max-width: 768px) {
  .nav-toggle { display: block; }
  .nav-links {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background: rgba(10,10,15,0.98);
    flex-direction: column;
    padding: var(--space-lg);
    gap: var(--space-md);
    transform: translateY(-120%);
    transition: transform 0.4s var(--ease-out);
  }
  .nav-links.open { transform: translateY(0); }
}

/* === Hero区 === */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-xxl) var(--space-lg);
  z-index: 1;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 50% at 50% 40%, var(--vermilion-glow), transparent),
    radial-gradient(ellipse 40% 30% at 50% 60%, var(--gold-glow), transparent);
  opacity: 0.5;
  z-index: -1;
}

/* 八卦旋转动画 */
.hero-bagua {
  position: absolute;
  width: 400px;
  height: 400px;
  opacity: 0.06;
  animation: baguaRotate 60s linear infinite;
}

@keyframes baguaRotate {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.hero-content {
  max-width: 700px;
}

.hero-title {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 900;
  color: var(--gold);
  letter-spacing: 0.2em;
  line-height: 1.3;
  margin-bottom: var(--space-md);
  text-shadow: 0 0 40px var(--gold-glow);
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--text-secondary);
  letter-spacing: 0.15em;
  margin-bottom: var(--space-xl);
  line-height: 2;
}

.hero-cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 14px 36px;
  background: var(--vermilion);
  color: #fff;
  font-family: var(--font-serif);
  font-size: 0.95rem;
  letter-spacing: 0.15em;
  border: none;
  cursor: pointer;
  transition: all 0.3s var(--ease-out);
  position: relative;
  overflow: hidden;
}
.hero-cta::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--vermilion-dark), var(--vermilion-light));
  opacity: 0;
  transition: opacity 0.3s;
}
.hero-cta:hover::before { opacity: 1; }
.hero-cta:hover { transform: translateY(-2px); box-shadow: 0 8px 30px var(--vermilion-glow); }
.hero-cta span { position: relative; z-index: 1; }

/* === 功能模块卡片 === */
.section {
  position: relative;
  z-index: 1;
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--space-xxl) var(--space-lg);
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-xl);
}

.section-title {
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  font-weight: 700;
  color: var(--gold);
  letter-spacing: 0.15em;
  margin-bottom: var(--space-sm);
}

.section-desc {
  color: var(--text-secondary);
  font-size: 0.95rem;
  letter-spacing: 0.08em;
  max-width: 600px;
  margin: 0 auto;
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-lg);
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: var(--space-xl) var(--space-lg);
  transition: all 0.4s var(--ease-out);
  position: relative;
  overflow: hidden;
}
.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
  opacity: 0;
  transition: opacity 0.4s;
}
.card:hover {
  border-color: var(--border-light);
  transform: translateY(-4px);
  box-shadow: 0 16px 40px rgba(0,0,0,0.4);
}
.card:hover::before { opacity: 1; }

.card-icon {
  font-size: 2.5rem;
  margin-bottom: var(--space-md);
  display: block;
}

.card-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--gold);
  letter-spacing: 0.1em;
  margin-bottom: var(--space-sm);
}

.card-desc {
  color: var(--text-secondary);
  font-size: 0.88rem;
  line-height: 1.8;
  margin-bottom: var(--space-lg);
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--vermilion-light);
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  transition: all 0.3s;
}
.card-link:hover { color: var(--vermilion); gap: 10px; }
.card-link::after { content: '→'; }

/* === 排盘表单区 === */
.calc-section {
  position: relative;
  z-index: 1;
  max-width: 800px;
  margin: 0 auto;
  padding: var(--space-xl) var(--space-lg);
}

.calc-panel {
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: var(--space-xl) var(--space-lg);
}

.calc-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--gold);
  letter-spacing: 0.12em;
  text-align: center;
  margin-bottom: var(--space-lg);
}

.form-row {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.form-group label {
  color: var(--text-secondary);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
}

.form-group select,
.form-group input,
.form-group textarea {
  background: var(--bg-input);
  border: 1px solid var(--border);
  color: var(--text-primary);
  padding: 10px 14px;
  font-family: var(--font-serif);
  font-size: 0.9rem;
  outline: none;
  transition: border-color 0.3s;
}
.form-group select:focus,
.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--gold-dark);
}

textarea {
  resize: vertical;
}

.btn-calc {
  display: block;
  width: 100%;
  max-width: 300px;
  margin: var(--space-lg) auto 0;
  padding: 14px 32px;
  background: var(--vermilion);
  color: #fff;
  font-family: var(--font-serif);
  font-size: 1rem;
  letter-spacing: 0.15em;
  border: none;
  cursor: pointer;
  transition: all 0.3s var(--ease-out);
}
.btn-calc:hover {
  background: var(--vermilion-light);
  box-shadow: 0 6px 24px var(--vermilion-glow);
}

/* === 结果区 === */
.result-panel {
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: var(--space-xl);
  margin-top: var(--space-lg);
  display: none;
}
.result-panel.show { display: block; }

.result-title {
  font-size: 1.3rem;
  color: var(--gold);
  letter-spacing: 0.1em;
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid var(--border);
}

/* 信息表格 */
.info-table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--space-md) 0;
}
.info-table th,
.info-table td {
  padding: 10px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border);
  font-size: 0.88rem;
}
.info-table th {
  color: var(--gold);
  font-weight: 600;
  letter-spacing: 0.08em;
  background: rgba(201,169,110,0.05);
  width: 120px;
}
.info-table td {
  color: var(--text-secondary);
}

/* === 解读文字区 === */
.reading-section {
  margin-top: var(--space-xl);
}
.reading-section h3 {
  color: var(--gold);
  font-size: 1.1rem;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-md);
  padding-left: var(--space-md);
  border-left: 3px solid var(--vermilion);
}
.reading-section p {
  color: var(--text-secondary);
  font-size: 0.92rem;
  line-height: 2;
  margin-bottom: var(--space-md);
  text-indent: 2em;
}

/* === 知识文章 === */
.article-section {
  position: relative;
  z-index: 1;
  max-width: 800px;
  margin: 0 auto;
  padding: var(--space-xl) var(--space-lg);
}

.article-section h2 {
  font-size: 1.6rem;
  color: var(--gold);
  letter-spacing: 0.12em;
  margin-bottom: var(--space-lg);
  text-align: center;
}

.article-section h3 {
  color: var(--gold);
  font-size: 1.1rem;
  margin: var(--space-lg) 0 var(--space-md);
  padding-left: var(--space-md);
  border-left: 3px solid var(--vermilion);
}

.article-section p {
  color: var(--text-secondary);
  font-size: 0.92rem;
  line-height: 2;
  margin-bottom: var(--space-md);
  text-indent: 2em;
}

.article-section ul {
  list-style: none;
  margin: var(--space-md) 0;
  padding: 0;
}
.article-section ul li {
  color: var(--text-secondary);
  font-size: 0.92rem;
  line-height: 2;
  padding-left: 1.5em;
  position: relative;
}
.article-section ul li::before {
  content: '◆';
  position: absolute;
  left: 0;
  color: var(--vermilion);
  font-size: 0.6em;
  top: 0.6em;
}

/* === 页脚 === */
.footer {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: var(--space-xl) var(--space-lg);
  border-top: 1px solid var(--border);
  margin-top: var(--space-xxl);
}
.footer p {
  color: var(--text-muted);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
}
.footer .footer-brand {
  color: var(--gold-dark);
  font-size: 0.85rem;
  margin-bottom: var(--space-sm);
  letter-spacing: 0.15em;
}

/* === 页面切换 === */
.page { display: none; }
.page.active { display: block; }

/* === Tab切换 === */
.tabs {
  display: flex;
  justify-content: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-xl);
  flex-wrap: wrap;
}
.tab-btn {
  padding: 8px 20px;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  font-family: var(--font-serif);
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  cursor: pointer;
  transition: all 0.3s;
}
.tab-btn:hover {
  border-color: var(--gold-dark);
  color: var(--gold);
}
.tab-btn.active {
  background: var(--gold);
  color: var(--bg-deep);
  border-color: var(--gold);
  font-weight: 600;
}

/* === 知识文库卡片 === */
.lib-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
  max-width: 900px;
  margin: 0 auto var(--space-xxl);
}
.lib-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: var(--space-lg) var(--space-md);
  text-align: center;
  cursor: pointer;
  transition: all 0.3s;
}
.lib-card:hover {
  border-color: var(--gold-dark);
  background: var(--bg-hover);
  transform: translateY(-4px);
}
.lib-card-icon {
  font-size: 2.2rem;
  margin-bottom: var(--space-sm);
  line-height: 1;
}
.lib-card-title {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--gold);
  margin-bottom: var(--space-sm);
  letter-spacing: 0.1em;
}
.lib-card-desc {
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.6;
}
.lib-back-btn {
  display: inline-block;
  padding: 8px 24px;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  font-family: var(--font-serif);
  font-size: 0.85rem;
  cursor: pointer;
  margin-bottom: var(--space-lg);
  transition: all 0.3s;
}
.lib-back-btn:hover {
  border-color: var(--gold-dark);
  color: var(--gold);
}
.lib-detail h2 {
  color: var(--gold);
  font-size: 1.5rem;
  margin-bottom: var(--space-lg);
  letter-spacing: 0.1em;
}
.lib-detail h3 {
  color: var(--vermilion-light);
  font-size: 1.05rem;
  margin-top: var(--space-lg);
  margin-bottom: var(--space-sm);
  padding-left: 12px;
  border-left: 3px solid var(--vermilion);
}
.lib-detail p {
  color: var(--text-secondary);
  line-height: 1.85;
  margin-bottom: var(--space-md);
  text-indent: 2em;
}

@media (max-width: 768px) {
  .lib-cards { grid-template-columns: 1fr; }
}

/* === 响应式 === */
@media (max-width: 768px) {
  .hero-title { letter-spacing: 0.1em; }
  .form-row { grid-template-columns: 1fr; }
  .cards-grid { grid-template-columns: 1fr; }
}

/* === 滚动显示动画 === */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* === 加载动画 === */
.loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-xl);
  gap: var(--space-md);
}
.loading-spinner {
  width: 40px;
  height: 40px;
  border: 2px solid var(--border);
  border-top-color: var(--gold);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.loading-text {
  color: var(--text-muted);
  font-size: 0.85rem;
  letter-spacing: 0.1em;
}

/* === 通知提示 === */
.toast {
  position: fixed;
  top: 80px;
  left: 50%;
  transform: translateX(-50%) translateY(-20px);
  background: var(--bg-card);
  border: 1px solid var(--gold-dark);
  color: var(--gold-light);
  padding: 12px 24px;
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  z-index: 200;
  opacity: 0;
  transition: all 0.4s var(--ease-out);
  pointer-events: none;
}
.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* === 语言切换 === */
.lang-switch {
  display: flex;
  gap: 4px;
}
.lang-btn {
  padding: 2px 8px;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-family: var(--font-serif);
  font-size: 0.72rem;
  cursor: pointer;
  transition: all 0.3s;
}
.lang-btn.active {
  border-color: var(--gold-dark);
  color: var(--gold);
  background: rgba(201,169,110,0.08);
}

/* === 知识文库 Tab === */
.tabs {
  display: flex;
  gap: var(--space-xs);
  margin-bottom: var(--space-lg);
  border-bottom: 1px solid var(--border);
  padding-bottom: var(--space-xs);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
.tab-btn {
  padding: 8px 16px;
  background: none;
  border: none;
  color: var(--text-muted);
  font-family: var(--font-serif);
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  cursor: pointer;
  transition: all 0.3s;
  white-space: nowrap;
  border-bottom: 2px solid transparent;
}
.tab-btn:hover { color: var(--text-secondary); }
.tab-btn.active {
  color: var(--gold);
  border-bottom-color: var(--gold);
}

.lib-tab { display: none; }
.lib-tab.active { display: block; }

/* === 解梦标签 === */
.dream-tag:hover {
  border-color: var(--gold-dark) !important;
  color: var(--gold) !important;
  background: rgba(201,169,110,0.08) !important;
}

/* === 五行色标 === */
.element-木 { color: #6abf69; }
.element-火 { color: #e85d4a; }
.element-土 { color: #d4a843; }
.element-金 { color: #c9c9c9; }
.element-水 { color: #5ba3d9; }

/* === 文章区块 === */
.article-section {
  max-width: 800px;
  margin: 0 auto;
  padding: var(--space-lg);
  color: var(--text-secondary);
}
.article-section h2 {
  color: var(--gold);
  font-size: 1.3rem;
  letter-spacing: 0.15em;
  margin-bottom: var(--space-lg);
  text-align: center;
}
.article-section h3 {
  color: var(--vermilion-light);
  font-size: 1rem;
  letter-spacing: 0.1em;
  margin: var(--space-lg) 0 var(--space-sm);
}
.article-section p {
  line-height: 2;
  margin-bottom: var(--space-md);
  text-align: justify;
}