/* 玩球吧 - 全球体育赛事直播平台 */
/* 主色调：淡黑金 (Light Black Gold) */

:root {
    --bg-dark: #0f0f0f;
    --bg-card: #1a1a1a;
    --primary-gold: #d4af37;
    --secondary-gold: #c5a028;
    --text-white: #ffffff;
    --text-gray: #b0b0b0;
    --accent-glow: rgba(212, 175, 55, 0.1);
    --transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    background-color: var(--bg-dark);
    color: var(--text-white);
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    line-height: 1.6;
    overflow-x: hidden;
    scroll-behavior: smooth;
}

/* Header & Nav */
header {
    background: rgba(15, 15, 15, 0.95);
    backdrop-filter: blur(10px);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    border-bottom: 1px solid rgba(212, 175, 55, 0.2);
}

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

.logo {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--primary-gold);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

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

.nav-links a {
    color: var(--text-white);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    transition: var(--transition);
}

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

/* Hero Section */
.hero {
    height: 80vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: 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') center/cover;
    padding-top: 80px;
}

.hero-content h1 {
    font-size: 4rem;
    letter-spacing: -1px;
    margin-bottom: 1rem;
    background: linear-gradient(to right, #fff, var(--primary-gold));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

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

.section-title {
    text-align: center;
    margin-bottom: 3rem;
}

.section-title h2 {
    font-size: 2.5rem;
    color: var(--primary-gold);
    margin-bottom: 0.5rem;
}

.section-title p {
    color: var(--text-gray);
}

/* 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 rgba(212, 175, 55, 0.1);
    border-radius: 12px;
    padding: 1.5rem;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.card:hover {
    transform: translateY(-10px);
    border-color: var(--primary-gold);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 8px;
    margin-bottom: 1rem;
}

/* Forms */
.contact-form {
    background: var(--bg-card);
    padding: 3rem;
    border-radius: 20px;
    max-width: 800px;
    margin: 0 auto;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--primary-gold);
}

input, textarea, select {
    width: 100%;
    padding: 0.8rem;
    background: #000;
    border: 1px solid rgba(212, 175, 55, 0.3);
    color: white;
    border-radius: 4px;
}

button {
    background: var(--primary-gold);
    color: black;
    border: none;
    padding: 1rem 2rem;
    font-weight: bold;
    cursor: pointer;
    border-radius: 4px;
    transition: var(--transition);
}

button:hover {
    background: #fff;
    transform: scale(1.05);
}

/* Footer */
footer {
    background: #000;
    padding: 4rem 2rem;
    border-top: 1px solid rgba(212, 175, 55, 0.2);
}

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

/* Scroll Animations */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: 0.8s all ease;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive */
@media (max-width: 768px) {
    .hero-content h1 { font-size: 2.5rem; }
    .nav-links { display: none; }
}