/* ============================================
   style.css - 壹号娱乐官网
   风格：现代科技感 + 金色渐变 + 毛玻璃
   响应式 + 暗色模式 + 滚动动画
   ============================================ */

/* === CSS Variables === */
:root {
  --primary: #f0b429;
  --primary-dark: #d49a1a;
  --primary-light: #fcd34d;
  --bg-dark: #1a1a2e;
  --bg-darker: #0f0f23;
  --bg-light: #f8f9fa;
  --bg-white: #ffffff;
  --text-dark: #1a1a2e;
  --text-light: #f8f9fa;
  --text-muted: #6c757d;
  --glass-bg: rgba(255, 255, 255, 0.15);
  --glass-border: rgba(255, 255, 255, 0.2);
  --glass-bg-dark: rgba(0, 0, 0, 0.25);
  --glass-border-dark: rgba(255, 255, 255, 0.1);
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.15);
  --shadow-glow: 0 0 20px rgba(240, 180, 41, 0.3);
  --radius: 16px;
  --radius-sm: 8px;
  --radius-lg: 24px;
  --transition: 0.3s ease;
  --transition-slow: 0.5s ease;
  --font: 'Segoe UI', system-ui, -apple-system, 'Helvetica Neue', sans-serif;
  --max-width: 1200px;
  --header-height: 72px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font);
  background: var(--bg-light);
  color: var(--text-dark);
  line-height: 1.6;
  transition: background var(--transition), color var(--transition);
  min-height: 100vh;
  overflow-x: hidden;
}

body.dark-mode {
  background: var(--bg-dark);
  color: var(--text-light);
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition);
}

img,
svg {
  max-width: 100%;
  height: auto;
  display: block;
}

ul,
ol {
  list-style: none;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

/* === Typography === */
h1, h2, h3, h4, h5, h6 {
  line-height: 1.3;
  font-weight: 700;
}

p {
  margin-bottom: 1rem;
}

/* === Glassmorphism Utility === */
.glass {
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
}

.dark-mode .glass {
  background: var(--glass-bg-dark);
  border-color: var(--glass-border-dark);
}

/* === Header & Navigation === */
header {
  position: sticky;
  top: 0;
  z-index: 1000;
  padding: 12px 0;
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--glass-border);
  transition: background var(--transition), border-color var(--transition);
}

.dark-mode header {
  background: var(--glass-bg-dark);
  border-color: var(--glass-border-dark);
}

.nav-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary);
  transition: transform var(--transition);
}

.logo:hover {
  transform: scale(1.02);
}

.logo svg {
  width: 40px;
  height: 40px;
  filter: drop-shadow(0 0 8px rgba(240, 180, 41, 0.3));
}

.nav-menu {
  display: flex;
  gap: 24px;
  align-items: center;
  flex-wrap: wrap;
}

.nav-menu li a {
  padding: 8px 0;
  font-weight: 500;
  position: relative;
  transition: color var(--transition);
}

.nav-menu li a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: width var(--transition);
  border-radius: 2px;
}

.nav-menu li a:hover,
.nav-menu li a.active {
  color: var(--primary);
}

.nav-menu li a:hover::after,
.nav-menu li a.active::after {
  width: 100%;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

/* Dark Mode Toggle */
.dark-toggle {
  background: none;
  border: 2px solid var(--primary);
  border-radius: 50%;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 1.2rem;
  color: var(--primary);
  transition: background var(--transition), color var(--transition), transform var(--transition);
}

.dark-toggle:hover {
  background: var(--primary);
  color: var(--bg-dark);
  transform: rotate(360deg);
}

/* Mobile Menu Button */
.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  font-size: 1.8rem;
  cursor: pointer;
  color: var(--primary);
  padding: 4px;
  transition: transform var(--transition);
}

.mobile-menu-btn:hover {
  transform: scale(1.1);
}

/* Search Box */
.search-box {
  display: flex;
  align-items: center;
  background: var(--glass-bg);
  border-radius: 30px;
  padding: 4px 12px;
  border: 1px solid var(--glass-border);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.search-box:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(240, 180, 41, 0.2);
}

.search-box input {
  background: transparent;
  border: none;
  outline: none;
  padding: 6px 8px;
  color: inherit;
  width: 120px;
  font-size: 0.95rem;
}

.search-box input::placeholder {
  color: var(--text-muted);
  opacity: 0.7;
}

.search-box button {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--primary);
  font-size: 1rem;
  padding: 4px;
  transition: transform var(--transition);
}

.search-box button:hover {
  transform: scale(1.15);
}

/* === Breadcrumb === */
.breadcrumb {
  padding: 12px 0;
  font-size: 0.9rem;
  background: var(--glass-bg);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  border-bottom: 1px solid var(--glass-border);
}

.dark-mode .breadcrumb {
  background: var(--glass-bg-dark);
  border-color: var(--glass-border-dark);
}

.breadcrumb a {
  color: var(--primary);
  font-weight: 500;
}

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

/* === Hero Banner === */
.hero {
  position: relative;
  overflow: hidden;
  min-height: 80vh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
  color: var(--text-light);
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 20% 50%, rgba(240, 180, 41, 0.1) 0%, transparent 50%),
              radial-gradient(circle at 80% 20%, rgba(255, 107, 107, 0.08) 0%, transparent 50%);
  pointer-events: none;
}

.hero-slide {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.8s ease;
  padding: 40px 20px;
}

.hero-slide.active {
  opacity: 1;
}

.hero-content {
  text-align: center;
  max-width: 800px;
  z-index: 2;
  animation: fadeInUp 0.8s ease;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-content h1 {
  font-size: 3rem;
  margin-bottom: 20px;
  background: linear-gradient(90deg, var(--primary), #ff6b6b, var(--primary-light));
  background-size: 200% 100%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: gradientShift 4s ease infinite;
}

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

.hero-content p {
  font-size: 1.2rem;
  margin-bottom: 30px;
  opacity: 0.9;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.hero-btn {
  display: inline-block;
  padding: 14px 40px;
  background: var(--primary);
  color: var(--bg-dark);
  font-weight: 700;
  border-radius: 50px;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
  border: none;
  cursor: pointer;
  font-size: 1.05rem;
  position: relative;
  overflow: hidden;
}

.hero-btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
  transform: translateX(-100%);
  transition: transform 0.6s;
}

.hero-btn:hover::before {
  transform: translateX(100%);
}

.hero-btn:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 24px rgba(240, 180, 41, 0.4);
  background: var(--primary-dark);
}

.hero-indicators {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 12px;
  z-index: 5;
}

.hero-indicators span {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.4);
  cursor: pointer;
  transition: background 0.3s, transform 0.3s;
}

.hero-indicators span:hover {
  background: var(--primary-light);
}

.hero-indicators span.active {
  background: var(--primary);
  transform: scale(1.3);
  box-shadow: 0 0 12px rgba(240, 180, 41, 0.5);
}

/* === Sections General === */
section {
  padding: 80px 0;
}

.section-title {
  font-size: 2.2rem;
  text-align: center;
  margin-bottom: 50px;
  position: relative;
}

.section-title span {
  background: linear-gradient(90deg, var(--primary), #ff6b6b);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-title::after {
  content: '';
  display: block;
  width: 60px;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), #ff6b6b);
  margin: 16px auto 0;
  border-radius: 4px;
}

/* === Card Grid === */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
}

.card {
  background: var(--glass-bg);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  padding: 30px 20px;
  box-shadow: var(--shadow);
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
}

.dark-mode .card {
  background: var(--glass-bg-dark);
  border-color: var(--glass-border-dark);
}

.card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}

.card h3 {
  font-size: 1.4rem;
  margin-bottom: 12px;
  color: var(--primary);
}

.card p {
  opacity: 0.85;
  margin-bottom: 0;
}

blockquote.card {
  font-style: italic;
  position: relative;
}

blockquote.card::before {
  content: '"';
  font-size: 3rem;
  color: var(--primary);
  position: absolute;
  top: 10px;
  left: 15px;
  opacity: 0.3;
  line-height: 1;
}

blockquote.card footer {
  margin-top: 16px;
  font-style: normal;
  font-weight: 600;
  color: var(--primary);
}

/* === Stat Grid === */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 30px;
  text-align: center;
}

.stat-item {
  padding: 30px 10px;
  background: var(--glass-bg);
  backdrop-filter: blur(8px);
  border-radius: var(--radius);
  border: 1px solid var(--glass-border);
  transition: transform var(--transition), box-shadow var(--transition);
}

.dark-mode .stat-item {
  background: var(--glass-bg-dark);
  border-color: var(--glass-border-dark);
}

.stat-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.stat-number {
  font-size: 2.8rem;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.2;
}

.stat-label {
  font-size: 1rem;
  margin-top: 8px;
  opacity: 0.8;
}

/* === Team Grid === */
.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 30px;
}

.team-card {
  text-align: center;
  padding: 30px 20px;
  background: var(--glass-bg);
  backdrop-filter: blur(8px);
  border-radius: var(--radius);
  border: 1px solid var(--glass-border);
  transition: transform var(--transition), box-shadow var(--transition);
}

.dark-mode .team-card {
  background: var(--glass-bg-dark);
  border-color: var(--glass-border-dark);
}

.team-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow);
}

.team-card .avatar {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), #ff6b6b);
  margin: 0 auto 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  color: var(--bg-dark);
  transition: transform var(--transition), box-shadow var(--transition);
}

.team-card:hover .avatar {
  transform: scale(1.05);
  box-shadow: var(--shadow-glow);
}

.team-card h3 {
  font-size: 1.2rem;
  margin-bottom: 4px;
  color: var(--primary);
}

.team-card p {
  opacity: 0.85;
  margin-bottom: 4px;
}

/* === FAQ === */
.faq-item {
  border-bottom: 1px solid var(--glass-border);
  padding: 18px 0;
  cursor: pointer;
  transition: background var(--transition);
}

.faq-item:hover {
  background: rgba(240, 180, 41, 0.03);
}

.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 600;
  font-size: 1.1rem;
  user-select: none;
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s;
  padding-top: 0;
  opacity: 0.9;
}

.faq-item.active .faq-answer {
  max-height: 300px;
  padding-top: 16px;
}

.faq-toggle {
  font-size: 1.4rem;
  transition: transform 0.3s;
  font-weight: 300;
  line-height: 1;
}

.faq-item.active .faq-toggle {
  transform: rotate(45deg);
}

/* === Contact === */
.contact-info {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 30px;
  text-align: center;
}

.contact-item {
  padding: 20px;
  background: var(--glass-bg);
  backdrop-filter: blur(8px);
  border-radius: var(--radius);
  border: 1px solid var(--glass-border);
  transition: transform var(--transition), box-shadow var(--transition);
}

.dark-mode .contact-item {
  background: var(--glass-bg-dark);
  border-color: var(--glass-border-dark);
}

.contact-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.contact-item svg {
  width: 40px;
  height: 40px;
  fill: var(--primary);
  margin: 0 auto 12px;
  transition: transform var(--transition);
}

.contact-item:hover svg {
  transform: scale(1.1);
}

.contact-item p {
  margin-bottom: 0;
}

/* === Footer === */
footer {
  background: var(--bg-darker);
  color: var(--text-light);
  padding: 50px 0 30px;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 30px;
  margin-bottom: 30px;
}

footer h4 {
  color: var(--primary);
  margin-bottom: 16px;
  font-size: 1.1rem;
}

footer ul li {
  margin-bottom: 8px;
}

footer ul li a {
  opacity: 0.8;
  transition: opacity var(--transition), color var(--transition);
}

footer ul li a:hover {
  color: var(--primary);
  opacity: 1;
}

.footer-bottom {
  text-align: center;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 20px;
  font-size: 0.9rem;
  opacity: 0.7;
}

.footer-bottom p {
  margin-bottom: 4px;
}

/* === Back to Top Button === */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: var(--primary);
  color: var(--bg-dark);
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s, visibility 0.3s, transform var(--transition), box-shadow var(--transition);
  z-index: 999;
  display: flex;
  align-items: center;
  justify-content: center;
}

.back-to-top.show {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(240, 180, 41, 0.4);
}

/* === Scroll Animation (fade-up) === */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* === Lazy Load Placeholder === */
.lazy-placeholder {
  background: linear-gradient(90deg, #eee 25%, #f5f5f5 50%, #eee 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: 8px;
  min-height: 200px;
}

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

.dark-mode .lazy-placeholder {
  background: linear-gradient(90deg, #333 25%, #444 50%, #333 75%);
}

/* === Responsive Design === */
@media (max-width: 992px) {
  .hero-content h1 {
    font-size: 2.5rem;
  }
  
  .section-title {
    font-size: 2rem;
  }
  
  .stat-number {
    font-size: 2.4rem;
  }
}

@media (max-width: 768px) {
  .nav-menu {
    display: none;
    flex-direction: column;
    width: 100%;
    margin-top: 12px;
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-radius: var(--radius);
    padding: 16px;
    border: 1px solid var(--glass-border);
  }
  
  .dark-mode .nav-menu {
    background: var(--glass-bg-dark);
    border-color: var(--glass-border-dark);
  }
  
  .nav-menu.open {
    display: flex;
  }
  
  .mobile-menu-btn {
    display: block;
  }
  
  .hero {
    min-height: 70vh;
  }
  
  .hero-content h1 {
    font-size: 2rem;
  }
  
  .hero-content p {
    font-size: 1rem;
  }
  
  .section-title {
    font-size: 1.6rem;
  }
  
  .stat-number {
    font-size: 2rem;
  }
  
  .search-box input {
    width: 80px;
  }
  
  .card-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  
  section {
    padding: 60px 0;
  }
  
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 12px;
  }
  
  .hero {
    min-height: 60vh;
  }
  
  .hero-content h1 {
    font-size: 1.6rem;
  }
  
  .hero-btn {
    padding: 12px 30px;
    font-size: 0.95rem;
  }
  
  .section-title {
    font-size: 1.4rem;
    margin-bottom: 30px;
  }
  
  .card {
    padding: 20px 15px;
  }
  
  .stat-item {
    padding: 20px 10px;
  }
  
  .stat-number {
    font-size: 1.8rem;
  }
  
  .team-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
  }
  
  .back-to-top {
    bottom: 20px;
    right: 20px;
    width: 44px;
    height: 44px;
    font-size: 1.2rem;
  }
  
  .nav-actions {
    gap: 10px;
  }
  
  .search-box input {
    width: 60px;
    font-size: 0.85rem;
  }
}

/* === Dark Mode Overrides === */
.dark-mode .glass-bg {
  background: var(--glass-bg-dark);
}

.dark-mode .card,
.dark-mode .stat-item,
.dark-mode .team-card,
.dark-mode .contact-item {
  border-color: var(--glass-border-dark);
}

.dark-mode .faq-item {
  border-color: var(--glass-border-dark);
}

.dark-mode .search-box {
  border-color: var(--glass-border-dark);
}

.dark-mode .search-box:focus-within {
  border-color: var(--primary);
}

/* === Additional Utility Classes === */
.text-center {
  text-align: center;
}

.mt-1 { margin-top: 1rem; }
.mt-2 { margin-top: 2rem; }
.mb-1 { margin-bottom: 1rem; }
.mb-2 { margin-bottom: 2rem; }

/* === Smooth Scrollbar (Webkit) === */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--primary);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--primary-dark);
}

/* === Selection === */
::selection {
  background: var(--primary);
  color: var(--bg-dark);
}

/* === Focus Styles for Accessibility === */
:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

/* === Print Styles === */
@media print {
  .hero {
    min-height: auto;
    padding: 40px 0;
  }
  
  .back-to-top,
  .mobile-menu-btn,
  .search-box,
  .dark-toggle {
    display: none !important;
  }
  
  .card,
  .stat-item,
  .team-card {
    box-shadow: none;
    border: 1px solid #ddd;
  }
}