/* style.css - 乐鱼体育 LEYU SPORTS 中国官方网站 */
:root {
    --primary: #1a73e8;
    --primary-dark: #0b4ea2;
    --accent: #ff6b35;
    --bg-dark: #0b0e1a;
    --bg-card: rgba(255,255,255,0.06);
    --text-primary: #f0f2f5;
    --text-secondary: #a0a8b8;
    --glass-bg: rgba(255,255,255,0.08);
    --glass-border: rgba(255,255,255,0.12);
    --shadow-soft: 0 8px 32px rgba(0,0,0,0.3);
    --radius-card: 20px;
    --radius-sm: 12px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}
body.light-mode {
    --bg-dark: #f5f7fa;
    --bg-card: rgba(0,0,0,0.03);
    --text-primary: #1a1d2e;
    --text-secondary: #4a5070;
    --glass-bg: rgba(255,255,255,0.7);
    --glass-border: rgba(0,0,0,0.08);
    --shadow-soft: 0 8px 32px rgba(0,0,0,0.08);
}
a { color: var(--primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--accent); }
img, svg { max-width: 100%; height: auto; display: block; }
.container { max-width: 1280px; margin: 0 auto; padding: 0 24px; }

/* Header */
header {
    position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
    background: rgba(11,14,26,0.85); backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--glass-border);
    transition: var(--transition);
}
body.light-mode header { background: rgba(245,247,250,0.85); }
.header-inner {
    display: flex; align-items: center; justify-content: space-between;
    height: 72px; padding: 0 24px; max-width: 1280px; margin: 0 auto;
}
.logo { display: flex; align-items: center; gap: 12px; }
.logo svg { width: 42px; height: 42px; }
.logo span { font-size: 1.5rem; font-weight: 700; letter-spacing: 1px; color: var(--text-primary); }
.logo span em { font-style: normal; color: var(--primary); }
nav { display: flex; align-items: center; gap: 32px; }
nav a { color: var(--text-secondary); font-size: 0.95rem; font-weight: 500; position: relative; padding: 4px 0; }
nav a::after { content: ''; position: absolute; bottom: -2px; left: 0; width: 0; height: 2px; background: var(--primary); transition: var(--transition); }
nav a:hover::after, nav a.active::after { width: 100%; }
nav a:hover, nav a.active { color: var(--text-primary); }
.header-actions { display: flex; align-items: center; gap: 16px; }
.theme-toggle, .search-toggle, .menu-toggle {
    background: var(--glass-bg); border: 1px solid var(--glass-border);
    color: var(--text-primary); width: 40px; height: 40px; border-radius: 50%;
    display: flex; align-items: center; justify-content: center; cursor: pointer;
    transition: var(--transition); font-size: 1.2rem;
}
.theme-toggle:hover, .search-toggle:hover, .menu-toggle:hover { background: var(--primary); border-color: var(--primary); }
.menu-toggle { display: none; }

/* Mobile nav */
.mobile-nav {
    position: fixed; top: 72px; left: 0; right: 0; bottom: 0;
    background: rgba(11,14,26,0.98); backdrop-filter: blur(20px);
    display: none; flex-direction: column; padding: 40px 24px; gap: 24px; z-index: 999;
    overflow-y: auto;
}
body.light-mode .mobile-nav { background: rgba(245,247,250,0.98); }
.mobile-nav.open { display: flex; }
.mobile-nav a { color: var(--text-secondary); font-size: 1.2rem; font-weight: 500; padding: 12px 0; border-bottom: 1px solid var(--glass-border); }

/* Hero Banner */
.hero {
    padding-top: 72px; position: relative; overflow: hidden;
    min-height: 100vh; display: flex; align-items: center;
}
.hero-bg {
    position: absolute; inset: 0; z-index: 0;
    background: linear-gradient(135deg, #0b0e1a 0%, #1a1d2e 40%, #0b4ea2 100%);
}
body.light-mode .hero-bg { background: linear-gradient(135deg, #e8ecf4 0%, #d0d8e8 40%, #b0c4de 100%); }
.hero-particles { position: absolute; inset: 0; z-index: 1; overflow: hidden; }
.hero-particles span {
    position: absolute; width: 6px; height: 6px; background: var(--primary);
    border-radius: 50%; opacity: 0.15; animation: float 20s infinite;
}
@keyframes float { 0%,100%{ transform: translateY(0) rotate(0deg); } 50%{ transform: translateY(-40px) rotate(180deg); } }
.hero-content { position: relative; z-index: 2; width: 100%; padding: 80px 0; }
.hero-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.hero-text h1 { font-size: 3.5rem; font-weight: 800; line-height: 1.2; margin-bottom: 24px; }
.hero-text h1 span { background: linear-gradient(135deg, var(--primary), var(--accent)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.hero-text p { font-size: 1.15rem; color: var(--text-secondary); margin-bottom: 32px; max-width: 540px; }
.hero-buttons { display: flex; gap: 16px; flex-wrap: wrap; }
.btn-primary, .btn-secondary {
    padding: 14px 36px; border-radius: 50px; font-weight: 600; font-size: 1rem;
    transition: var(--transition); display: inline-flex; align-items: center; gap: 8px; border: none; cursor: pointer;
}
.btn-primary { background: var(--primary); color: #fff; box-shadow: 0 4px 20px rgba(26,115,232,0.4); }
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 8px 30px rgba(26,115,232,0.5); }
.btn-secondary { background: var(--glass-bg); color: var(--text-primary); border: 1px solid var(--glass-border); }
.btn-secondary:hover { background: var(--primary); border-color: var(--primary); transform: translateY(-2px); }
.hero-visual { position: relative; }
.hero-card {
    background: var(--glass-bg); backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border); border-radius: var(--radius-card);
    padding: 32px; box-shadow: var(--shadow-soft);
}
.hero-card svg { width: 100%; height: auto; border-radius: var(--radius-sm); }

/* Sections */
section { padding: 100px 0; }
.section-title { text-align: center; margin-bottom: 60px; }
.section-title h2 { font-size: 2.5rem; font-weight: 700; margin-bottom: 16px; }
.section-title h2 span { color: var(--primary); }
.section-title p { color: var(--text-secondary); max-width: 600px; margin: 0 auto; font-size: 1.05rem; }

/* Glass cards grid */
.card-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 28px; }
.glass-card {
    background: var(--glass-bg); backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border); border-radius: var(--radius-card);
    padding: 32px 24px; transition: var(--transition); box-shadow: var(--shadow-soft);
    opacity: 0; transform: translateY(30px);
}
.glass-card.visible { opacity: 1; transform: translateY(0); }
.glass-card:hover { transform: translateY(-8px); border-color: var(--primary); box-shadow: 0 16px 48px rgba(26,115,232,0.15); }
.glass-card .icon { width: 56px; height: 56px; border-radius: 16px; background: linear-gradient(135deg, var(--primary), var(--accent)); display: flex; align-items: center; justify-content: center; margin-bottom: 20px; }
.glass-card h3 { font-size: 1.3rem; margin-bottom: 12px; }
.glass-card p { color: var(--text-secondary); font-size: 0.95rem; }

/* Timeline */
.timeline { position: relative; padding-left: 40px; }
.timeline::before { content: ''; position: absolute; left: 16px; top: 0; bottom: 0; width: 2px; background: var(--primary); opacity: 0.3; }
.timeline-item { position: relative; margin-bottom: 40px; opacity: 0; transform: translateX(-20px); transition: 0.6s ease; }
.timeline-item.visible { opacity: 1; transform: translateX(0); }
.timeline-item::before { content: ''; position: absolute; left: -28px; top: 6px; width: 12px; height: 12px; border-radius: 50%; background: var(--primary); border: 3px solid var(--bg-dark); }
.timeline-item .year { font-weight: 700; color: var(--primary); font-size: 1.1rem; }
.timeline-item h4 { font-size: 1.2rem; margin: 4px 0 8px; }
.timeline-item p { color: var(--text-secondary); }

/* Team */
.team-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 28px; }
.team-card { text-align: center; background: var(--glass-bg); border: 1px solid var(--glass-border); border-radius: var(--radius-card); padding: 28px 16px; transition: var(--transition); opacity: 0; transform: scale(0.95); }
.team-card.visible { opacity: 1; transform: scale(1); }
.team-card:hover { transform: translateY(-6px); border-color: var(--primary); }
.team-card .avatar { width: 80px; height: 80px; border-radius: 50%; margin: 0 auto 16px; background: linear-gradient(135deg, var(--primary), var(--accent)); display: flex; align-items: center; justify-content: center; font-size: 2rem; color: #fff; }
.team-card h4 { font-size: 1.1rem; }
.team-card p { color: var(--text-secondary); font-size: 0.85rem; }

/* FAQ */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item { background: var(--glass-bg); border: 1px solid var(--glass-border); border-radius: var(--radius-sm); margin-bottom: 12px; overflow: hidden; transition: var(--transition); }
.faq-question { padding: 20px 24px; cursor: pointer; display: flex; justify-content: space-between; align-items: center; font-weight: 600; font-size: 1.05rem; }
.faq-question .arrow { transition: var(--transition); font-size: 1.2rem; }
.faq-item.open .faq-question .arrow { transform: rotate(180deg); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.4s ease, padding 0.3s ease; padding: 0 24px; }
.faq-item.open .faq-answer { max-height: 500px; padding: 0 24px 20px; }
.faq-answer p { color: var(--text-secondary); }

/* HowTo */
.howto { background: var(--glass-bg); border: 1px solid var(--glass-border); border-radius: var(--radius-card); padding: 40px; margin-top: 40px; }
.howto h3 { font-size: 1.6rem; margin-bottom: 20px; }
.howto ol { padding-left: 24px; color: var(--text-secondary); }
.howto ol li { margin-bottom: 12px; }

/* News */
.news-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 28px; }
.news-card { background: var(--glass-bg); border: 1px solid var(--glass-border); border-radius: var(--radius-card); overflow: hidden; transition: var(--transition); opacity: 0; transform: translateY(20px); }
.news-card.visible { opacity: 1; transform: translateY(0); }
.news-card:hover { transform: translateY(-6px); border-color: var(--primary); }
.news-card .thumb { height: 180px; background: linear-gradient(135deg, var(--primary), var(--accent)); display: flex; align-items: center; justify-content: center; color: #fff; font-size: 2rem; }
.news-card .body { padding: 20px; }
.news-card .body .date { color: var(--text-secondary); font-size: 0.85rem; }
.news-card .body h4 { font-size: 1.1rem; margin: 8px 0; }
.news-card .body p { color: var(--text-secondary); font-size: 0.9rem; }
.news-card .body .read-more { display: inline-block; margin-top: 12px; color: var(--primary); font-weight: 600; }

/* Partners */
.partner-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(120px, 1fr)); gap: 24px; align-items: center; }
.partner-item { background: var(--glass-bg); border: 1px solid var(--glass-border); border-radius: var(--radius-sm); padding: 20px; display: flex; align-items: center; justify-content: center; height: 80px; transition: var(--transition); }
.partner-item:hover { border-color: var(--primary); transform: scale(1.05); }

/* Contact & Map */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
.contact-info { background: var(--glass-bg); border: 1px solid var(--glass-border); border-radius: var(--radius-card); padding: 32px; }
.contact-info h3 { margin-bottom: 20px; }
.contact-info p { color: var(--text-secondary); margin-bottom: 8px; display: flex; align-items: center; gap: 8px; }
.map-placeholder { background: var(--glass-bg); border: 1px solid var(--glass-border); border-radius: var(--radius-card); padding: 32px; display: flex; align-items: center; justify-content: center; min-height: 250px; color: var(--text-secondary); }

/* Footer */
footer { background: rgba(0,0,0,0.3); border-top: 1px solid var(--glass-border); padding: 60px 0 30px; }
body.light-mode footer { background: rgba(0,0,0,0.02); }
.footer-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 40px; margin-bottom: 40px; }
.footer-col h4 { font-size: 1.1rem; margin-bottom: 16px; color: var(--text-primary); }
.footer-col a, .footer-col p { display: block; color: var(--text-secondary); font-size: 0.9rem; margin-bottom: 8px; }
.footer-col a:hover { color: var(--primary); }
.footer-bottom { text-align: center; padding-top: 30px; border-top: 1px solid var(--glass-border); color: var(--text-secondary); font-size: 0.85rem; }
.footer-bottom a { color: var(--text-secondary); margin: 0 8px; }
.footer-bottom a:hover { color: var(--primary); }

/* Back to top */
.back-to-top {
    position: fixed; bottom: 40px; right: 40px; width: 48px; height: 48px;
    background: var(--primary); color: #fff; border: none; border-radius: 50%;
    display: flex; align-items: center; justify-content: center; font-size: 1.5rem;
    cursor: pointer; opacity: 0; visibility: hidden; transition: var(--transition);
    box-shadow: 0 4px 20px rgba(26,115,232,0.4); z-index: 999;
}
.back-to-top.visible { opacity: 1; visibility: visible; }
.back-to-top:hover { background: var(--primary-dark); transform: translateY(-4px); }

/* Search overlay */
.search-overlay {
    position: fixed; inset: 0; background: rgba(0,0,0,0.7); backdrop-filter: blur(8px);
    z-index: 2000; display: none; align-items: center; justify-content: center;
}
.search-overlay.open { display: flex; }
.search-box { background: var(--bg-dark); border: 1px solid var(--glass-border); border-radius: var(--radius-card); padding: 32px; width: 90%; max-width: 500px; }
.search-box input { width: 100%; padding: 14px 20px; border: 1px solid var(--glass-border); border-radius: 50px; background: var(--glass-bg); color: var(--text-primary); font-size: 1rem; outline: none; }
.search-box input:focus { border-color: var(--primary); }
.search-box .results { margin-top: 16px; max-height: 300px; overflow-y: auto; }
.search-box .results a { display: block; padding: 8px 0; color: var(--text-secondary); border-bottom: 1px solid var(--glass-border); }
.search-box .results a:hover { color: var(--primary); }
.search-close { position: absolute; top: 20px; right: 20px; background: none; border: none; color: var(--text-primary); font-size: 2rem; cursor: pointer; }

/* Responsive */
@media (max-width: 1024px) {
    .hero-grid { grid-template-columns: 1fr; gap: 40px; }
    .hero-text h1 { font-size: 2.5rem; }
    .contact-grid { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
    nav { display: none; }
    .menu-toggle { display: flex; }
    .hero-text h1 { font-size: 2rem; }
    .section-title h2 { font-size: 1.8rem; }
    .header-inner { height: 64px; }
    .hero { padding-top: 64px; min-height: auto; }
    section { padding: 60px 0; }
    .back-to-top { bottom: 20px; right: 20px; width: 40px; height: 40px; font-size: 1.2rem; }
}
@media (max-width: 480px) {
    .container { padding: 0 16px; }
    .hero-text h1 { font-size: 1.6rem; }
    .btn-primary, .btn-secondary { padding: 12px 24px; font-size: 0.9rem; }
}

/* Scrollbar */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-dark); }
::-webkit-scrollbar-thumb { background: var(--primary); border-radius: 3px; }