/* 
  蓝鲸直播 - 品牌视觉系统 (Black Gold)
  Primary Palette: 
  - Deep Black: #121212
  - Elegant Charcoal: #1e1e1e
  - Premium Gold: #D4AF37
  - Soft Gold: #FFD700
  - White Text: #f5f5f5
*/

:root {
  --bg-dark: #121212;
  --bg-card: #1e1e1e;
  --gold-primary: #D4AF37;
  --gold-hover: #FFD700;
  --text-main: #f5f5f5;
  --text-muted: #a0a0a0;
  --border-color: #2a2a2a;
}

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

body {
  font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
  background-color: var(--bg-dark);
  color: var(--text-main);
  line-height: 1.6;
  overflow-x: hidden;
}

a {
  text-decoration: none;
  color: inherit;
  transition: all 0.3s ease;
}

ul {
  list-style: none;
}

/* Header & Nav */
header {
  position: fixed;
  top: 0;
  width: 100%;
  background: rgba(18, 18, 18, 0.95);
  border-bottom: 1px solid var(--border-color);
  z-index: 1000;
  backdrop-filter: blur(10px);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.8rem;
  font-weight: bold;
  color: var(--gold-primary);
  display: flex;
  align-items: center;
  gap: 10px;
}

.nav-links {
  display: flex;
  gap: 2rem;
}

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

/* Hero Section */
.hero {
  padding: 120px 2rem 60px;
  background: radial-gradient(circle at center, #2c2c2c 0%, #121212 100%);
  text-align: center;
  min-height: 80vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

.hero h1 {
  font-size: 3.5rem;
  margin-bottom: 1rem;
  background: linear-gradient(to right, #D4AF37, #f5f5f5);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: fadeInDown 1s ease;
}

.hero p {
  font-size: 1.2rem;
  color: var(--text-muted);
  max-width: 800px;
  margin-bottom: 2rem;
}

/* Buttons */
.btn {
  padding: 0.8rem 2.5rem;
  border-radius: 4px;
  cursor: pointer;
  font-weight: 600;
  transition: 0.3s;
}

.btn-primary {
  background-color: var(--gold-primary);
  color: #121212;
  border: none;
}

.btn-primary:hover {
  background-color: var(--gold-hover);
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(212, 175, 55, 0.4);
}

/* Sections */
section {
  padding: 5rem 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.section-title {
  font-size: 2rem;
  margin-bottom: 3rem;
  text-align: center;
  color: var(--gold-primary);
  position: relative;
}

.section-title::after {
  content: '';
  display: block;
  width: 50px;
  height: 3px;
  background: var(--gold-primary);
  margin: 10px auto;
}

/* Grid Layouts */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 2rem;
  border-radius: 8px;
  transition: transform 0.3s ease;
}

.card:hover {
  transform: translateY(-10px);
  border-color: var(--gold-primary);
}

.card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: 4px;
  margin-bottom: 1rem;
  cursor: pointer;
}

/* News & List Styles */
.news-item {
  display: flex;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-color);
}

.news-item .date {
  font-family: monospace;
  color: var(--gold-primary);
  min-width: 100px;
}

/* Footer */
footer {
  background: #0a0a0a;
  padding: 4rem 2rem;
  border-top: 1px solid var(--border-color);
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 3rem;
}

.footer-bottom {
  text-align: center;
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid #222;
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* Animations */
@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-30px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Responsive */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .hero h1 { font-size: 2.5rem; }
  .grid-3 { grid-template-columns: 1fr; }
}