/* ====================================
   Art Deco Echo CSS - Hi8823 Casino
   装饰艺术回响设计风格
   ==================================== */

/* CSS变量定义 - Art Deco调色板 */
:root {
  /* 主色调 - 深蓝/墨绿 */
  --primary-dark: #1a2b3d;
  --primary-blue: #2c4a6b;
  --primary-green: #1e3a2e;

  /* 金属强调色 */
  --gold-bright: #ffd700;
  --gold-dark: #b8860b;
  --silver-bright: #c0c0c0;
  --silver-dark: #a9a9a9;

  /* 中性色 */
  --cream: #f5f5dc;
  --light-gray: #e6e6e6;
  --medium-gray: #999999;
  --dark-gray: #333333;

  /* 文本色 */
  --text-light: #ffffff;
  --text-dark: #2c2c2c;
  --text-gold: #ffd700;

  /* 字体系列 - Art Deco风格 */
  --font-primary: 'Montserrat', 'Arial', sans-serif;
  --font-secondary: 'Poppins', 'Helvetica', sans-serif;

  /* 阴影和效果 */
  --shadow-soft: 0 4px 15px rgba(0,0,0,0.1);
  --shadow-hard: 0 8px 25px rgba(0,0,0,0.3);
  --shadow-gold: 0 0 20px rgba(255,215,0,0.5);

  /* 过渡动画 */
  --transition-fast: 0.3s ease;
  --transition-slow: 0.6s ease;

  /* 布局动态变量 */
  --warning-height: 0px; /* 将由JS动态设置为警告条实际高度 */
  --header-height: 76px; /* 将由JS动态更新为header实际高度 */
}

/* 基础重置和全局样式 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--font-primary);
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-blue) 100%);
  color: var(--text-light);
  line-height: 1.6;
  overflow-x: hidden;
  padding-top: calc(var(--warning-height, 0px) + var(--header-height, 76px)); /*
    根据实际高度自动留白
  */
}

/* 容器样式 */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ====================================
   警告条样式
   ==================================== */
.warning-banner {
  background-color: #ffcc00;
  color: #000;
  padding: 10px;
  text-align: center;
  font-weight: bold;
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 10000;
  font-size: 14px;
  line-height: 1.4;
}

.warning-link {
  color: #0066cc;
  text-decoration: underline;
  margin-left: 5px;
}

.warning-link:hover {
  color: #004499;
}

/* ====================================
   Header 导航 - Art Deco风格
   ==================================== */
.art-deco-header {
  background: linear-gradient(90deg, var(--primary-dark) 0%, var(--primary-blue) 50%, var(--primary-dark) 100%);
  border-bottom: 3px solid var(--gold-bright);
  box-shadow: var(--shadow-hard);
  position: fixed;
  top: var(--warning-height, 0px); /* 动态跟随警告条高度 */
  width: 100%;
  z-index: 9999; /* 在警告条下方 */
}

/* Homepage specific offset for fixed warning banner (pure CSS fallback) */
body.homepage .art-deco-header { top: 60px; }
body.homepage { padding-top: calc(60px + var(--header-height, 76px)); }

.main-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 15px 20px;
  position: relative;
}

/* Art Deco装饰边框 */
.main-nav::before,
.main-nav::after {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, transparent, var(--gold-bright), transparent);
  pointer-events: none; /* don't block clicks */
}

.main-nav::before { left: 50px; }
.main-nav::after { right: 50px; }

.logo-container {
  display: flex;
  align-items: center;
}

.logo {
  height: 45px;
  width: auto;
  filter: drop-shadow(0 0 10px var(--gold-bright));
}

/* 导航菜单 - 几何装饰风格 */
.nav-menu {
  display: flex;
  list-style: none;
  gap: 30px;
}

.nav-menu li {
  position: relative;
}

.nav-menu a {
  color: var(--text-light);
  text-decoration: none;
  font-weight: 600;
  font-size: 16px;
  letter-spacing: 1px;
  padding: 10px 20px;
  display: block;
  transition: var(--transition-fast);
  position: relative;
  background: linear-gradient(45deg, transparent 30%, rgba(255,215,0,0.1) 50%, transparent 70%);
  clip-path: polygon(10px 0, 100% 0, calc(100% - 10px) 100%, 0 100%);
}

.nav-menu a:hover {
  color: var(--gold-bright);
  background: linear-gradient(45deg, var(--primary-blue) 30%, var(--gold-dark) 50%, var(--primary-blue) 70%);
  transform: translateY(-2px);
  box-shadow: var(--shadow-gold);
}

/* CTA按钮 - Art Deco几何形状 */
.cta-buttons {
  display: flex;
  gap: 15px;
}

.btn-register,
.btn-login {
  padding: 12px 25px;
  border: 2px solid var(--gold-bright);
  background: transparent;
  color: var(--gold-bright);
  font-weight: bold;
  font-size: 14px;
  letter-spacing: 1px;
  cursor: pointer;
  transition: var(--transition-fast);
  position: relative;
  clip-path: polygon(0 25%, 15px 0, 100% 0, 100% 75%, calc(100% - 15px) 100%, 0 100%);
}

.btn-register:hover,
.btn-login:hover {
  background: var(--gold-bright);
  color: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-gold);
}

/* ====================================
   Hero区域 - 装饰艺术风格
   ==================================== */
.hero-overlay {
  position: relative;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-blue) 50%, var(--primary-green) 100%);
}

/* Art Deco几何背景图案 */
.hero-overlay::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image:
    radial-gradient(circle at 25% 25%, var(--gold-bright) 1px, transparent 1px),
    radial-gradient(circle at 75% 75%, var(--silver-bright) 1px, transparent 1px),
    linear-gradient(45deg, transparent 40%, rgba(255,215,0,0.1) 50%, transparent 60%);
  background-size: 50px 50px, 70px 70px, 100px 100px;
  opacity: 0.3;
  animation: geometricMove 20s linear infinite;
}

@keyframes geometricMove {
  0% { transform: translateX(0) translateY(0) rotate(0deg); }
  100% { transform: translateX(50px) translateY(50px) rotate(360deg); }
}

.hero-content {
  text-align: center;
  z-index: 2;
  position: relative;
}

/* 首页特定样式 - hero content需要为警告条和header让位 */
body.homepage .hero-content {
  padding-top: 124px; /* 为警告条和header留出空间 */
}

.hero-title {
  font-size: 4rem;
  font-weight: 900;
  margin-bottom: 20px;
  background: linear-gradient(45deg, var(--gold-bright), var(--silver-bright), var(--gold-bright));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
  letter-spacing: 3px;
  position: relative;
}

/* Art Deco装饰线条 */
.hero-title::before,
.hero-title::after {
  content: '';
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  width: 200px;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--gold-bright), transparent);
}

.hero-title::before { top: -20px; }
.hero-title::after { bottom: -20px; }

.hero-subtitle {
  font-size: 1.4rem;
  margin-bottom: 30px;
  color: var(--cream);
  font-weight: 300;
  letter-spacing: 1px;
}

.hero-features {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.feature-badge {
  background: linear-gradient(135deg, var(--gold-dark), var(--gold-bright));
  color: var(--primary-dark);
  padding: 10px 20px;
  border-radius: 0;
  font-weight: bold;
  font-size: 14px;
  clip-path: polygon(10px 0, 100% 0, calc(100% - 10px) 100%, 0 100%);
  box-shadow: var(--shadow-soft);
}

.hero-cta {
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
}

.btn-primary,
.btn-secondary {
  padding: 15px 35px;
  font-size: 18px;
  font-weight: bold;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: var(--transition-fast);
  letter-spacing: 1px;
  clip-path: polygon(0 20%, 20px 0, 100% 0, 100% 80%, calc(100% - 20px) 100%, 0 100%);
}

.btn-primary {
  background: linear-gradient(135deg, var(--gold-bright), var(--gold-dark));
  color: var(--primary-dark);
}

.btn-secondary {
  background: transparent;
  color: var(--gold-bright);
  border: 2px solid var(--gold-bright);
}

.btn-primary:hover,
.btn-secondary:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-gold);
}

/* ====================================
   内容区块 - Art Deco布局
   ==================================== */
.content-section {
  padding: 100px 0;
  position: relative;
}

.content-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(180deg, var(--primary-blue) 0%, var(--primary-dark) 100%);
  opacity: 0.9;
}

.content-block {
  display: flex;
  margin-bottom: 80px;
  align-items: center;
  gap: 40px;
  background: rgba(255,255,255,0.05);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255,215,0,0.3);
  padding: 40px;
  position: relative;
  z-index: 1;
}

/* Art Deco装饰角落 */
.content-block::before,
.content-block::after {
  content: '';
  position: absolute;
  width: 30px;
  height: 30px;
  border: 3px solid var(--gold-bright);
}

.content-block::before {
  top: 20px;
  left: 20px;
  border-right: none;
  border-bottom: none;
}

.content-block::after {
  bottom: 20px;
  right: 20px;
  border-left: none;
  border-top: none;
}

.content-block.horizontal {
  flex-direction: row;
}

.content-block.vertical {
  flex-direction: column;
  text-align: center;
}

.block-image {
  flex: 1;
  position: relative;
}

.block-image img {
  width: 100%;
  height: 300px;
  object-fit: cover;
  border: 3px solid var(--gold-bright);
  box-shadow: var(--shadow-hard);
  filter: contrast(1.1) saturate(1.2);
}

.block-content {
  flex: 1;
  padding: 20px;
}

.block-content h2 {
  font-size: 2.2rem;
  margin-bottom: 20px;
  color: var(--gold-bright);
  font-weight: 700;
  letter-spacing: 2px;
  position: relative;
}

.block-content h2::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 0;
  width: 80px;
  height: 3px;
  background: linear-gradient(90deg, var(--gold-bright), transparent);
}

.block-content p {
  color: var(--cream);
  line-height: 1.8;
  font-size: 16px;
  text-align: justify;
}

/* ====================================
   内容网格 - Art Deco几何排列
   ==================================== */
.content-grid-section {
  padding: 100px 0;
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-green) 100%);
  position: relative;
}

.section-title {
  text-align: center;
  font-size: 3rem;
  margin-bottom: 60px;
  color: var(--gold-bright);
  font-weight: 800;
  letter-spacing: 2px;
  position: relative;
}

.section-title::before,
.section-title::after {
  content: '';
  position: absolute;
  top: 50%;
  width: 100px;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--gold-bright), transparent);
}

.section-title::before { left: -120px; }
.section-title::after { right: -120px; }

.content-grid {
  display: grid;
  gap: 30px;
  margin-bottom: 60px;
}

.content-grid.cols-3 {
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
}

.content-grid.cols-4 {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid-item {
  background: rgba(255,255,255,0.08);
  backdrop-filter: blur(15px);
  border: 2px solid rgba(255,215,0,0.3);
  padding: 30px;
  text-align: center;
  transition: var(--transition-fast);
  position: relative;
  clip-path: polygon(0 0, calc(100% - 20px) 0, 100% 20px, 100% 100%, 20px 100%, 0 calc(100% - 20px));
}

.grid-item:hover {
  transform: translateY(-10px);
  border-color: var(--gold-bright);
  box-shadow: var(--shadow-gold);
}

.grid-item img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  margin-bottom: 20px;
  border: 2px solid var(--gold-bright);
  filter: contrast(1.1);
}

.grid-item h3 {
  font-size: 1.5rem;
  margin-bottom: 15px;
  color: var(--gold-bright);
  font-weight: 600;
  letter-spacing: 1px;
}

.grid-item p {
  color: var(--cream);
  line-height: 1.7;
  font-size: 14px;
  text-align: justify;
}

/* ====================================
   促销高亮区域
   ==================================== */
.promotions-highlight {
  padding: 80px 0;
  background: linear-gradient(45deg, var(--primary-blue), var(--primary-dark));
  position: relative;
}

.promo-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.promo-card {
  background: linear-gradient(135deg, rgba(255,215,0,0.1), rgba(255,215,0,0.05));
  border: 2px solid var(--gold-bright);
  padding: 40px 30px;
  text-align: center;
  transition: var(--transition-fast);
  position: relative;
  clip-path: polygon(20px 0, 100% 0, 100% calc(100% - 20px), calc(100% - 20px) 100%, 0 100%, 0 20px);
}

.promo-card:hover {
  transform: scale(1.05);
  box-shadow: var(--shadow-gold);
}

.promo-value {
  font-size: 3rem;
  font-weight: 900;
  color: var(--gold-bright);
  margin-bottom: 15px;
  text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
}

.promo-card h3 {
  font-size: 1.3rem;
  margin-bottom: 10px;
  color: var(--text-light);
  letter-spacing: 1px;
}

.promo-card p {
  color: var(--cream);
  margin-bottom: 20px;
}

.btn-claim {
  background: linear-gradient(135deg, var(--gold-bright), var(--gold-dark));
  color: var(--primary-dark);
  padding: 12px 30px;
  text-decoration: none;
  font-weight: bold;
  letter-spacing: 1px;
  clip-path: polygon(10px 0, 100% 0, calc(100% - 10px) 100%, 0 100%);
  transition: var(--transition-fast);
}

.btn-claim:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(255,215,0,0.4);
}

/* ====================================
   信任指标区域
   ==================================== */
.trust-section {
  padding: 60px 0;
  background: var(--primary-dark);
}

.trust-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 40px;
  text-align: center;
}

.trust-item {
  padding: 30px;
  background: rgba(255,215,0,0.05);
  border: 1px solid rgba(255,215,0,0.2);
  transition: var(--transition-fast);
}

.trust-item:hover {
  border-color: var(--gold-bright);
  background: rgba(255,215,0,0.1);
}

.trust-number {
  font-size: 2.5rem;
  font-weight: 900;
  color: var(--gold-bright);
  margin-bottom: 10px;
  text-shadow: 1px 1px 2px rgba(0,0,0,0.5);
}

.trust-item p {
  color: var(--cream);
  font-size: 14px;
  letter-spacing: 1px;
}

/* ====================================
   Footer - Art Deco风格
   ==================================== */
.main-footer {
  background: linear-gradient(135deg, var(--primary-dark) 0%, #0d1929 100%);
  border-top: 3px solid var(--gold-bright);
  padding: 60px 0 30px;
  position: relative;
}

.main-footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--gold-bright), var(--silver-bright), var(--gold-bright), transparent);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 40px;
  margin-bottom: 40px;
}

.footer-column h4 {
  color: var(--gold-bright);
  font-size: 1.2rem;
  margin-bottom: 20px;
  font-weight: 600;
  letter-spacing: 1px;
  position: relative;
}

.footer-column h4::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 40px;
  height: 2px;
  background: var(--gold-bright);
}

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

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

.footer-column ul li a {
  color: var(--cream);
  text-decoration: none;
  transition: var(--transition-fast);
  font-size: 14px;
}

.footer-column ul li a:hover {
  color: var(--gold-bright);
  padding-left: 5px;
}

.social-links {
  display: flex;
  gap: 15px;
  margin-top: 15px;
}

.social-links a {
  display: inline-block;
  width: 40px;
  height: 40px;
  background: var(--gold-bright);
  color: var(--primary-dark);
  text-align: center;
  line-height: 40px;
  font-weight: bold;
  text-decoration: none;
  transition: var(--transition-fast);
  clip-path: polygon(25% 0%, 75% 0%, 100% 50%, 75% 100%, 25% 100%, 0% 50%);
}

.social-links a:hover {
  background: var(--silver-bright);
  transform: scale(1.1);
}

.footer-bottom {
  border-top: 1px solid rgba(255,215,0,0.3);
  padding-top: 30px;
  text-align: center;
}

.footer-bottom p {
  color: var(--medium-gray);
  font-size: 12px;
  line-height: 1.6;
}

/* ====================================
   页面特定样式
   ==================================== */
.page-header {
  padding: 120px 0 80px;
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-blue) 100%);
  text-align: center;
  margin-top: 80px;
}

.page-title {
  font-size: 3rem;
  color: var(--gold-bright);
  margin-bottom: 20px;
  font-weight: 700;
  letter-spacing: 2px;
}

.page-subtitle {
  font-size: 1.2rem;
  color: var(--cream);
  margin-bottom: 30px;
}

.breadcrumb {
  display: flex;
  justify-content: center;
  gap: 10px;
  color: var(--medium-gray);
  font-size: 14px;
}

.breadcrumb a {
  color: var(--gold-bright);
  text-decoration: none;
}

.breadcrumb a:hover {
  text-decoration: underline;
}

/* ====================================
   汉堡菜单样式
   ==================================== */
.hamburger-menu {
  display: none;
  flex-direction: column;
  cursor: pointer;
  padding: 5px;
  z-index: 10001; /* 确保在警告条上方 */
  position: relative;
}

.hamburger-menu span {
  width: 25px;
  height: 3px;
  background: var(--gold-bright);
  margin: 3px 0;
  transition: 0.3s;
  border-radius: 2px;
}

.hamburger-menu.active span:nth-child(1) {
  transform: rotate(-45deg) translate(-5px, 6px);
}

.hamburger-menu.active span:nth-child(2) {
  opacity: 0;
}

.hamburger-menu.active span:nth-child(3) {
  transform: rotate(45deg) translate(-5px, -6px);
}

/* 移动端菜单覆盖层 */
.mobile-menu-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.8);
  z-index: 9998; /* 在header下方，但在其他内容上方 */
}

.mobile-menu-overlay.active {
  display: block;
}

/* ====================================
   响应式设计
   ==================================== */
@media (max-width: 768px) {
  .container {
    padding: 0 15px;
  }

  .main-nav {
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
  }

  .hamburger-menu {
    display: flex;
  }

  .nav-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 260px; /* 更紧凑的面板宽度 */
    height: 100vh;
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-blue) 100%);
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
    padding: 56px 14px 14px; /* 减小内边距 */
    transition: right 0.3s ease;
    z-index: 10000; /* 确保在警告条上方 */
    box-shadow: -5px 0 15px rgba(0, 0, 0, 0.3);
  }

  .nav-menu.active {
    right: 0;
  }

  .nav-menu li {
    width: 100%;
    margin: 6px 0; /* 减小项间距 */
  }

  .nav-menu li a {
    display: block;
    width: 100%;
    padding: 12px 14px; /* 更小的按钮内边距 */
    text-align: center;
    border: 1px solid rgba(255, 215, 0, 0.3);
    border-radius: 5px;
    background: rgba(255, 255, 255, 0.05);
    transition: all 0.3s ease;
    font-size: 15px; /* 略微减小字号 */
    line-height: 1.3;
    letter-spacing: 0.2px;
  }

  .nav-menu li a:hover {
    background: rgba(255, 215, 0, 0.1);
    border-color: var(--gold-bright);
  }

  .cta-buttons {
    flex-direction: column;
    gap: 8px; /* 更紧凑 */
    margin-top: 12px; /* 更紧凑 */
    width: 100%;
  }

  .cta-buttons button {
    width: 100%;
    padding: 10px; /* 更紧凑 */
  }

  .hero-title {
    font-size: 2.5rem;
  }

  .hero-subtitle {
    font-size: 1.1rem;
  }

  .hero-features {
    flex-direction: column;
    align-items: center;
  }

  .content-block.horizontal {
    flex-direction: column;
    text-align: center;
  }

  .block-content h2 {
    font-size: 1.8rem;
  }

  .section-title {
    font-size: 2rem;
  }

  .section-title::before,
  .section-title::after {
    display: none;
  }

  .content-grid.cols-3,
  .content-grid.cols-4 {
    grid-template-columns: 1fr;
  }

  .promo-cards {
    grid-template-columns: 1fr;
  }

  .trust-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 2rem;
  }

  .block-content h2 {
    font-size: 1.5rem;
  }

  .section-title {
    font-size: 1.8rem;
  }

  .trust-grid {
    grid-template-columns: 1fr;
  }

  .content-block {
    padding: 20px;
  }

  .grid-item {
    padding: 20px;
  }
}

/* ====================================
   特殊动画效果
   ==================================== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes goldGlow {
  0%, 100% {
    box-shadow: 0 0 10px rgba(255,215,0,0.3);
  }
  50% {
    box-shadow: 0 0 30px rgba(255,215,0,0.8);
  }
}

.animate-on-scroll {
  animation: fadeInUp 0.8s ease-out;
}

.gold-glow-effect {
  animation: goldGlow 2s ease-in-out infinite;
}