/* 满冠体育 (ManGuan) 官网入口 - style.css */
:root {
    --primary: #1a1a2e;
    --secondary: #e94560;
    --accent: #0f3460;
    --bg-light: #f5f5f5;
    --text-light: #333;
    --bg-dark: #121212;
    --text-dark: #e0e0e0;
    --glass: rgba(255,255,255,0.15);
    --shadow: 0 8px 32px rgba(0,0,0,0.1);
    --radius: 16px;
    --transition: 0.3s ease;
    --gradient-banner: linear-gradient(135deg, #1a1a2e, #0f3460, #e94560);
    --card-bg-light: #ffffff;
    --card-bg-dark: rgba(255,255,255,0.05);
    --font-main: system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
    --max-width: 1200px;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-main);
    background: var(--bg-light);
    color: var(--text-light);
    transition: background var(--transition), color var(--transition);
    line-height: 1.6;
    min-height: 100vh;
}

body.dark-mode {
    background: var(--bg-dark);
    color: var(--text-dark);
}

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

a:hover {
    opacity: 0.8;
    color: #ff6b81;
}

img, svg {
    max-width: 100%;
    height: auto;
    display: block;
}

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

/* ===== Header ===== */
header {
    background: var(--primary);
    padding: 15px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.3);
    backdrop-filter: blur(5px);
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo svg {
    width: 50px;
    height: 50px;
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.2));
}

.logo span {
    font-size: 1.8rem;
    font-weight: bold;
    color: #fff;
    letter-spacing: 1px;
}

nav ul {
    display: flex;
    gap: 20px;
    list-style: none;
}

nav ul li a {
    color: #fff;
    font-size: 1rem;
    padding: 8px 12px;
    border-radius: 8px;
    transition: var(--transition);
    position: relative;
}

nav ul li a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--secondary);
    transition: var(--transition);
    transform: translateX(-50%);
}

nav ul li a:hover::after {
    width: 80%;
}

nav ul li a:hover {
    background: rgba(233,69,96,0.2);
    color: #fff;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    color: #fff;
    font-size: 1.5rem;
    cursor: pointer;
    padding: 5px 10px;
    border-radius: 8px;
    transition: var(--transition);
}

.menu-toggle:hover {
    background: rgba(255,255,255,0.1);
}

.search-bar {
    display: flex;
    gap: 8px;
    align-items: center;
}

.search-bar input {
    padding: 8px 12px;
    border: none;
    border-radius: 8px;
    background: rgba(255,255,255,0.2);
    color: #fff;
    font-size: 0.9rem;
    transition: var(--transition);
    min-width: 150px;
}

.search-bar input::placeholder {
    color: #ccc;
}

.search-bar input:focus {
    outline: none;
    background: rgba(255,255,255,0.3);
    box-shadow: 0 0 8px rgba(233,69,96,0.3);
}

.search-bar button {
    padding: 8px 16px;
    border: none;
    border-radius: 8px;
    background: var(--secondary);
    color: #fff;
    cursor: pointer;
    font-size: 0.9rem;
    transition: var(--transition);
    font-weight: 500;
}

.search-bar button:hover {
    background: #d63852;
    transform: scale(1.02);
}

.dark-toggle {
    background: none;
    border: 1px solid #fff;
    color: #fff;
    padding: 6px 12px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: var(--transition);
}

.dark-toggle:hover {
    background: rgba(255,255,255,0.1);
    border-color: var(--secondary);
}

/* ===== Breadcrumb ===== */
.breadcrumb {
    background: rgba(255,255,255,0.05);
    padding: 10px 0;
    font-size: 0.9rem;
    backdrop-filter: blur(5px);
}

.breadcrumb a {
    color: var(--secondary);
}

.breadcrumb a:hover {
    text-decoration: underline;
}

.breadcrumb span {
    color: #aaa;
}

/* ===== Hero ===== */
.hero {
    background: var(--gradient-banner);
    color: #fff;
    padding: 80px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
    animation: heroGlow 10s ease-in-out infinite;
}

@keyframes heroGlow {
    0%, 100% { transform: translate(0,0); }
    50% { transform: translate(10%,10%); }
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 20px;
    position: relative;
    z-index: 1;
    text-shadow: 0 4px 12px rgba(0,0,0,0.3);
}

.hero p {
    font-size: 1.2rem;
    max-width: 700px;
    margin: 0 auto 30px;
    position: relative;
    z-index: 1;
    opacity: 0.9;
}

.hero .btn {
    display: inline-block;
    padding: 14px 40px;
    background: var(--secondary);
    color: #fff;
    border-radius: 50px;
    font-size: 1.1rem;
    transition: var(--transition);
    position: relative;
    z-index: 1;
    box-shadow: 0 4px 15px rgba(233,69,96,0.4);
}

.hero .btn:hover {
    transform: scale(1.05);
    box-shadow: 0 6px 20px rgba(233,69,96,0.6);
}

.hero-banner {
    margin-top: 40px;
    position: relative;
    z-index: 1;
}

.hero-banner svg {
    width: 100%;
    height: auto;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

/* ===== Sections ===== */
section {
    padding: 60px 0;
}

.section-title {
    font-size: 2.2rem;
    margin-bottom: 40px;
    text-align: center;
    position: relative;
    color: inherit;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: var(--secondary);
    margin: 10px auto 0;
    border-radius: 2px;
    transition: var(--transition);
}

.section-title:hover::after {
    width: 100px;
}

/* ===== Grids ===== */
.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
}

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

.grid-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

/* ===== Cards ===== */
.card {
    background: var(--glass);
    backdrop-filter: blur(10px);
    border-radius: var(--radius);
    padding: 30px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid rgba(255,255,255,0.1);
    position: relative;
    overflow: hidden;
}

body.dark-mode .card {
    background: var(--card-bg-dark);
    border-color: rgba(255,255,255,0.1);
}

.card::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(233,69,96,0.05) 0%, transparent 70%);
    opacity: 0;
    transition: var(--transition);
}

.card:hover::before {
    opacity: 1;
}

.card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 40px rgba(0,0,0,0.15);
    border-color: var(--secondary);
}

.card svg {
    width: 60px;
    height: 60px;
    margin-bottom: 15px;
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.2));
}

.card h3 {
    font-size: 1.4rem;
    margin-bottom: 10px;
    color: var(--secondary);
}

.card p {
    font-size: 0.95rem;
    opacity: 0.9;
    line-height: 1.7;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: bold;
    color: var(--secondary);
    display: block;
    margin-bottom: 5px;
}

/* ===== FAQ ===== */
.faq-item {
    margin-bottom: 15px;
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: var(--radius);
    overflow: hidden;
    transition: var(--transition);
}

body.dark-mode .faq-item {
    border-color: rgba(255,255,255,0.1);
}

.faq-question {
    background: var(--primary);
    color: #fff;
    padding: 15px 20px;
    cursor: pointer;
    font-size: 1.1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition);
}

.faq-question:hover {
    background: #2a2a4e;
}

.faq-question::after {
    content: '+';
    font-size: 1.5rem;
    transition: var(--transition);
    font-weight: bold;
}

.faq-item.active .faq-question::after {
    content: '-';
    transform: rotate(180deg);
}

.faq-answer {
    padding: 0 20px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.4s ease;
    background: rgba(255,255,255,0.05);
}

body.dark-mode .faq-answer {
    background: rgba(255,255,255,0.02);
}

.faq-item.active .faq-answer {
    max-height: 300px;
    padding: 15px 20px;
}

/* ===== Footer ===== */
footer {
    background: var(--primary);
    color: #fff;
    padding: 40px 0 20px;
    position: relative;
}

footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--gradient-banner);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.footer-grid h4 {
    margin-bottom: 15px;
    font-size: 1.2rem;
    color: var(--secondary);
}

.footer-grid ul {
    list-style: none;
}

.footer-grid ul li {
    margin-bottom: 8px;
}

.footer-grid ul li a {
    color: #ccc;
    transition: var(--transition);
}

.footer-grid ul li a:hover {
    color: var(--secondary);
    padding-left: 5px;
}

.footer-bottom {
    text-align: center;
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid rgba(255,255,255,0.2);
    font-size: 0.9rem;
    color: #aaa;
}

/* ===== Scroll Animation ===== */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ===== Back to Top ===== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background: var(--secondary);
    color: #fff;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 999;
    box-shadow: 0 4px 15px rgba(233,69,96,0.4);
    font-size: 1.5rem;
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(233,69,96,0.6);
}

/* ===== Custom Scrollbar ===== */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 4px;
}

body.dark-mode ::-webkit-scrollbar-track {
    background: #2a2a2a;
}

::-webkit-scrollbar-thumb {
    background: var(--secondary);
    border-radius: 4px;
    transition: var(--transition);
}

::-webkit-scrollbar-thumb:hover {
    background: #d63852;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .grid-2, .grid-3, .grid-4 {
        grid-template-columns: 1fr;
    }

    .header-inner {
        flex-direction: column;
        gap: 15px;
    }

    nav ul {
        flex-direction: column;
        display: none;
        width: 100%;
        background: rgba(26,26,46,0.95);
        border-radius: var(--radius);
        padding: 15px;
        box-shadow: var(--shadow);
    }

    nav ul.show {
        display: flex;
    }

    nav ul li a {
        display: block;
        padding: 12px;
        border-bottom: 1px solid rgba(255,255,255,0.1);
    }

    nav ul li:last-child a {
        border-bottom: none;
    }

    .menu-toggle {
        display: block;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .hero p {
        font-size: 1rem;
    }

    .section-title {
        font-size: 1.8rem;
    }

    .search-bar {
        width: 100%;
        justify-content: center;
    }

    .search-bar input {
        flex: 1;
        min-width: 100px;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }

    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 45px;
        height: 45px;
    }
}

@media (max-width: 480px) {
    .footer-grid {
        grid-template-columns: 1fr;
    }

    .hero {
        padding: 50px 0;
    }

    .hero h1 {
        font-size: 1.5rem;
    }

    .card {
        padding: 20px;
    }

    .stat-number {
        font-size: 2rem;
    }

    .logo span {
        font-size: 1.4rem;
    }
}

/* ===== Dark Mode Specific ===== */
body.dark-mode .card {
    background: var(--card-bg-dark);
}

body.dark-mode .faq-question {
    background: #222;
}

body.dark-mode .search-bar input {
    background: rgba(255,255,255,0.1);
    color: #fff;
}

body.dark-mode .breadcrumb {
    background: rgba(0,0,0,0.2);
}

body.dark-mode .hero::before {
    background: radial-gradient(circle, rgba(233,69,96,0.1) 0%, transparent 70%);
}

/* ===== Additional Hover Effects ===== */
.card:hover h3 {
    color: #ff6b81;
}

.hero .btn:active {
    transform: scale(0.98);
}

/* ===== Link Styles for Sections ===== */
.grid-3 a, .grid-2 a {
    color: var(--secondary);
    transition: var(--transition);
}

.grid-3 a:hover, .grid-2 a:hover {
    color: #ff6b81;
    text-decoration: underline;
}

/* ===== Smooth Number Animation Support ===== */
.stat-number {
    font-variant-numeric: tabular-nums;
}

/* ===== Print Styles ===== */
@media print {
    .back-to-top, .menu-toggle, .search-bar, .dark-toggle {
        display: none !important;
    }

    .hero {
        background: #1a1a2e !important;
        color: #fff !important;
    }

    .card {
        break-inside: avoid;
        box-shadow: none;
        border: 1px solid #ddd;
    }
}