/* 
  蓝鲸直播 - 品牌视觉规范 (Pure CSS)
  主题：淡黑金 (Pale Black & Gold)
*/

:root {
    --bg-dark: #0a0a0a;
    --bg-card: #141414;
    --accent-gold: #d4af37;
    --gold-hover: #f1c40f;
    --text-main: #e0e0e0;
    --text-muted: #888888;
    --glass-border: rgba(212, 175, 55, 0.2);
    --transition-slow: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

/* 滚动条美化 */
::-webkit-scrollbar {
    width: 6px;
}
::-webkit-scrollbar-track {
    background: var(--bg-dark);
}
::-webkit-scrollbar-thumb {
    background: var(--accent-gold);
    border-radius: 10px;
}

/* Navigation */
nav {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(10, 10, 10, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--glass-border);
    padding: 1rem 5%;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--accent-gold);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 10px;
}

.nav-links {
    display: flex;
    gap: 30px;
}

.nav-links a {
    color: var(--text-main);
    text-decoration: none;
    font-size: 0.95rem;
    transition: var(--transition-slow);
}

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

/* Common Section Styles */
section {
    padding: 100px 5% 60px;
    max-width: 1400px;
    margin: 0 auto;
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 3rem;
    text-align: center;
    position: relative;
    color: var(--accent-gold);
}

.section-title::after {
    content: "";
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: var(--accent-gold);
}

/* Hero Section */
.hero {
    height: 80vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background: linear-gradient(rgba(0,0,0,0.7), rgba(0,0,0,0.7)), url('https://tse-mm.bing.com/th?q=体育馆直播') center/cover;
    text-align: center;
    margin-top: 60px;
}

.hero h1 {
    font-size: 4rem;
    letter-spacing: 5px;
    margin-bottom: 1.5rem;
    background: linear-gradient(to right, #d4af37, #f1c40f);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Grid Layouts */
.grid-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 25px;
}

/* Cards */
.card {
    background: var(--bg-card);
    border: 1px solid rgba(255,255,255,0.05);
    border-radius: 15px;
    padding: 20px;
    transition: var(--transition-slow);
    cursor: pointer;
    overflow: hidden;
}

.card:hover {
    transform: translateY(-10px);
    border-color: var(--accent-gold);
    box-shadow: 0 10px 30px rgba(212, 175, 55, 0.1);
}

.card img {
    width: 100%;
    height: 180px;
    object-fit: cover;
    border-radius: 10px;
    margin-bottom: 15px;
}

/* News List */
.news-item {
    display: flex;
    gap: 20px;
    background: var(--bg-card);
    padding: 15px;
    margin-bottom: 15px;
    border-radius: 10px;
    border-left: 4px solid var(--accent-gold);
}

/* Filter Bar */
.filter-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    margin-bottom: 30px;
    padding: 20px;
    background: var(--bg-card);
    border-radius: 12px;
}

.filter-bar select, .search-box input {
    background: #222;
    color: white;
    border: 1px solid #444;
    padding: 10px 15px;
    border-radius: 5px;
}

/* Contact Form */
.contact-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
}

.contact-form input, .contact-form textarea {
    width: 100%;
    background: #1a1a1a;
    border: 1px solid #333;
    color: white;
    padding: 15px;
    margin-bottom: 20px;
    border-radius: 8px;
}

.btn-primary {
    background: var(--accent-gold);
    color: black;
    border: none;
    padding: 12px 30px;
    font-weight: bold;
    border-radius: 5px;
    cursor: pointer;
    transition: var(--transition-slow);
}

.btn-primary:hover {
    background: var(--gold-hover);
    transform: scale(1.05);
}

/* Footer */
footer {
    background: #050505;
    padding: 60px 5% 30px;
    border-top: 1px solid #222;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
}

/* Animations */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: var(--transition-slow);
}

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

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

/* Floating Chat */
.floating-chat {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background: var(--accent-gold);
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    box-shadow: 0 5px 20px rgba(0,0,0,0.5);
    cursor: pointer;
    z-index: 1001;
}