/* styles.css - Black Gold (体育竞技风格) */

:root {
    --bg-main: #0a0a0a;
    --bg-darker: #050505;
    --bg-alt: #121212;
    --gold-primary: #D4AF37;
    --gold-secondary: #FFD700;
    --gold-dark: #A67C00;
    --text-white: #ffffff;
    --text-gray: #b0b0b0;
    --text-muted: #666666;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --container-max: 1200px;
    --shadow-gold: 0 10px 30px rgba(212, 175, 55, 0.1);
}

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

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

html {
    scroll-behavior: smooth;
}

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

ul {
    list-style: none;
}

img {
    max-width: 100%;
    display: block;
}

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

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

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo {
    font-size: 28px;
    font-weight: 800;
    color: var(--text-white);
    letter-spacing: -1px;
}

.logo span {
    color: var(--gold-primary);
}

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

.nav-links a {
    font-weight: 500;
    font-size: 16px;
    color: var(--text-gray);
}

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

.search-bar {
    display: flex;
    background: var(--bg-alt);
    border-radius: 4px;
    overflow: hidden;
    border: 1px solid #333;
}

.search-bar input {
    background: transparent;
    border: none;
    padding: 8px 15px;
    color: white;
    width: 200px;
}

.search-bar button {
    background: var(--gold-primary);
    border: none;
    padding: 0 15px;
    color: black;
    font-weight: bold;
    cursor: pointer;
}

/* Hero Section */
.hero {
    height: 80vh;
    background: url('https://tse-mm.bing.com/th?q=体育馆足球场航拍') no-repeat center center/cover;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, rgba(10,10,10,0.9) 0%, rgba(10,10,10,0.4) 50%, rgba(10,10,10,0.8) 100%);
}

.hero-content {
    position: relative;
    z-index: 10;
}

.hero h1 {
    font-size: 64px;
    font-weight: 800;
    margin-bottom: 20px;
    line-height: 1.1;
    text-shadow: 0 5px 15px rgba(0,0,0,0.5);
}

.hero p {
    font-size: 20px;
    color: var(--text-gray);
    margin-bottom: 40px;
    max-width: 600px;
}

.btn {
    display: inline-block;
    padding: 15px 35px;
    border-radius: 4px;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
}

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

.btn-gold:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(212, 175, 55, 0.3);
}

.btn-outline {
    border: 1px solid var(--gold-primary);
    color: var(--gold-primary);
    margin-left: 20px;
}

/* Sections */
.section-padding {
    padding: 100px 0;
}

.bg-dark {
    background-color: var(--bg-darker);
}

.bg-dark-alt {
    background-color: var(--bg-alt);
}

.section-title {
    margin-bottom: 50px;
}

.section-title h2 {
    font-size: 36px;
    font-weight: 800;
    position: relative;
    padding-bottom: 15px;
}

.section-title h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 4px;
    background: var(--gold-primary);
}

.section-title p {
    color: var(--gold-primary);
    text-transform: uppercase;
    font-size: 14px;
    letter-spacing: 2px;
    margin-top: 5px;
}

/* Company Intro */
.intro-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.intro-text h3 {
    font-size: 28px;
    margin-bottom: 20px;
    color: var(--gold-primary);
}

.intro-text p {
    margin-bottom: 20px;
    color: var(--text-gray);
}

.stats {
    display: flex;
    gap: 40px;
    margin-top: 40px;
}

.stat-item .num {
    display: block;
    font-size: 32px;
    font-weight: 800;
    color: var(--gold-primary);
}

.stat-item .label {
    font-size: 14px;
    color: var(--text-muted);
}

.img-rounded {
    border-radius: 12px;
    border: 1px solid rgba(212, 175, 55, 0.3);
}

/* Core Products */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.product-card {
    background: var(--bg-alt);
    padding: 40px;
    border-radius: 8px;
    border: 1px solid #222;
    transition: var(--transition);
}

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

.product-card h3 {
    font-size: 20px;
    margin: 20px 0 15px;
    color: var(--gold-primary);
}

/* News List */
.section-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: 40px;
}

.view-more {
    color: var(--gold-primary);
    font-weight: 600;
}

.news-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.news-item {
    background: var(--bg-alt);
    border-radius: 8px;
    overflow: hidden;
    transition: var(--transition);
}

.news-item:hover {
    transform: scale(1.02);
    box-shadow: 0 15px 40px rgba(0,0,0,0.4);
}

.news-img {
    height: 200px;
    overflow: hidden;
}

.news-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.news-meta {
    padding: 20px;
}

.news-meta .date {
    font-size: 12px;
    color: var(--text-muted);
}

.news-meta h4 {
    font-size: 18px;
    margin: 10px 0;
}

/* Matches */
.match-filters {
    display: flex;
    gap: 15px;
}

.match-filters button {
    background: transparent;
    border: 1px solid #333;
    padding: 5px 15px;
    color: var(--text-gray);
    cursor: pointer;
    border-radius: 20px;
}

.match-filters button.active {
    background: var(--gold-primary);
    color: black;
    border-color: var(--gold-primary);
}

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

.match-card {
    background: #1a1a1a;
    padding: 20px;
    border-radius: 8px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-left: 4px solid var(--gold-primary);
}

.match-info {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-muted);
    font-size: 14px;
}

.match-teams {
    display: flex;
    align-items: center;
    gap: 20px;
    flex-grow: 1;
    justify-content: center;
}

.team {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 120px;
}

.team img {
    width: 40px;
    height: 40px;
    margin-bottom: 5px;
}

.vs {
    font-weight: 800;
    color: var(--gold-primary);
}

/* Promotion */
.promo-banner {
    background: linear-gradient(135deg, #1a1505 0%, #0a0a0a 100%);
    border: 1px solid var(--gold-primary);
    border-radius: 20px;
    padding: 60px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.promo-content h2 {
    font-size: 48px;
    margin-bottom: 15px;
}

.promo-actions {
    display: flex;
    align-items: center;
    gap: 30px;
    margin-top: 30px;
}

.share-links {
    display: flex;
    gap: 15px;
}

.share-links img {
    width: 32px;
}

.promo-qr {
    text-align: center;
}

.promo-qr img {
    width: 150px;
    margin-bottom: 10px;
    border: 5px solid white;
}

/* Enterprise News */
.ent-news-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.ent-item {
    font-size: 14px;
    padding: 15px;
    border-bottom: 1px solid #222;
}

.ent-item a:hover {
    color: var(--gold-primary);
}

.ent-item .date {
    display: block;
    color: var(--text-muted);
}

/* Footer */
.footer {
    background: #050505;
    padding: 80px 0 30px;
    border-top: 1px solid #1a1a1a;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 60px;
    margin-bottom: 60px;
}

.footer-info p {
    margin-top: 20px;
    color: var(--text-muted);
}

.footer-nav h4, .footer-contact h4 {
    color: var(--gold-primary);
    margin-bottom: 25px;
}

.footer-nav ul li {
    margin-bottom: 12px;
}

.footer-nav ul a {
    color: var(--text-muted);
}

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

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid #1a1a1a;
    color: var(--text-muted);
    font-size: 13px;
}

/* Widgets */
.floating-widget {
    position: fixed;
    right: 30px;
    bottom: 30px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    z-index: 999;
}

.btn-scroll-top, .btn-live-chat {
    background: var(--gold-primary);
    border: none;
    color: black;
    padding: 10px 20px;
    border-radius: 4px;
    font-weight: bold;
    cursor: pointer;
    box-shadow: 0 5px 15px rgba(0,0,0,0.3);
}

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

.animate-up {
    animation: fadeInUp 0.8s ease forwards;
}

/* Responsive */
@media (max-width: 992px) {
    .hero h1 { font-size: 48px; }
    .intro-grid { grid-template-columns: 1fr; }
    .news-list { grid-template-columns: repeat(2, 1fr); }
    .matches-grid { grid-template-columns: 1fr; }
    .footer-content { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
    .nav-links { display: none; }
    .promo-banner { flex-direction: column; gap: 40px; text-align: center; }
    .promo-actions { flex-direction: column; }
    .ent-news-grid { grid-template-columns: repeat(2, 1fr); }
}