/* ========================================
   MusabayTV - 时尚风格设计
   ======================================== */

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

:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --secondary: #8b5cf6;
    --accent: #ec4899;
    --dark: #0f172a;
    --dark-light: #1e293b;
    --text: #f8fafc;
    --text-muted: #94a3b8;
    --glass: rgba(255, 255, 255, 0.1);
    --glass-border: rgba(255, 255, 255, 0.2);
    --gradient-1: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-2: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-3: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    --shadow-glow: 0 0 60px rgba(99, 102, 241, 0.3);
}

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

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

/* 背景装饰 */
.bg-gradient {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(ellipse at 20% 20%, rgba(99, 102, 241, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 80%, rgba(139, 92, 246, 0.15) 0%, transparent 50%);
    pointer-events: none;
    z-index: -1;
}

.floating-shapes {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
    z-index: -1;
    overflow: hidden;
}

.shape {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    animation: float 20s ease-in-out infinite;
}

.shape-1 {
    width: 400px;
    height: 400px;
    background: rgba(99, 102, 241, 0.2);
    top: 10%;
    left: -100px;
    animation-delay: 0s;
}

.shape-2 {
    width: 300px;
    height: 300px;
    background: rgba(139, 92, 246, 0.15);
    top: 60%;
    right: -50px;
    animation-delay: -5s;
}

.shape-3 {
    width: 250px;
    height: 250px;
    background: rgba(236, 72, 153, 0.1);
    top: 30%;
    right: 20%;
    animation-delay: -10s;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    25% { transform: translate(30px, 30px) rotate(5deg); }
    50% { transform: translate(0, 60px) rotate(0deg); }
    75% { transform: translate(-30px, 30px) rotate(-5deg); }
}

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0;
    transition: all 0.3s ease;
}

.navbar.scrolled {
    background: rgba(15, 23, 42, 0.9);
    backdrop-filter: blur(20px);
    padding: 12px 0;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
}

.logo-text {
    font-size: 20px;
    font-weight: 700;
    background: var(--gradient-3);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 8px;
}

.nav-link {
    color: var(--text-muted);
    text-decoration: none;
    padding: 10px 20px;
    border-radius: 12px;
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
}

.nav-link::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 12px;
    background: var(--gradient-3);
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: -1;
}

.nav-link:hover,
.nav-link.active {
    color: var(--text);
}

.nav-link:hover::before,
.nav-link.active::before {
    opacity: 1;
}

.btn-glass {
    background: var(--glass);
    border: 1px solid var(--glass-border);
    color: var(--text);
    padding: 10px 24px;
    border-radius: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.btn-glass:hover {
    background: var(--gradient-3);
    border-color: transparent;
    transform: translateY(-2px);
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 10px;
}

.hamburger span {
    width: 24px;
    height: 2px;
    background: var(--text);
    transition: all 0.3s ease;
}

/* Hero区域 */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 0 80px;
    position: relative;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--glass);
    border: 1px solid var(--glass-border);
    padding: 8px 20px;
    border-radius: 30px;
    font-size: 14px;
    color: var(--text);
    margin-bottom: 32px;
    backdrop-filter: blur(10px);
}

.pulse-dot {
    width: 8px;
    height: 8px;
    background: #10b981;
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.2); }
}

.hero-title {
    font-size: 64px;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 24px;
}

.gradient-text {
    background: var(--gradient-3);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-desc {
    font-size: 18px;
    color: var(--text-muted);
    line-height: 1.8;
    margin-bottom: 40px;
}

.hero-btns {
    display: flex;
    gap: 16px;
    margin-bottom: 60px;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 16px 32px;
    border-radius: 16px;
    font-weight: 600;
    font-size: 16px;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
}

.btn-gradient {
    background: var(--gradient-3);
    color: var(--text);
    box-shadow: 0 4px 20px rgba(99, 102, 241, 0.4);
}

.btn-gradient:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(99, 102, 241, 0.5);
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--glass-border);
    color: var(--text);
}

.btn-outline:hover {
    background: var(--glass);
    border-color: var(--primary);
    transform: translateY(-3px);
}

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

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 28px;
    font-weight: 700;
    background: var(--gradient-3);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 14px;
    color: var(--text-muted);
    margin-top: 4px;
}

.stat-divider {
    width: 1px;
    background: var(--glass-border);
}

.hero-visual {
    position: relative;
}

.device-mockup {
    width: 100%;
    max-width: 400px;
    margin: 0 auto;
    background: linear-gradient(135deg, var(--dark-light) 0%, var(--dark) 100%);
    border-radius: 32px;
    padding: 12px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
    border: 1px solid var(--glass-border);
}

.device-screen {
    background: var(--dark-light);
    border-radius: 24px;
    overflow: hidden;
    aspect-ratio: 9/16;
}

.screen-content {
    padding: 16px;
}

.content-card {
    background: var(--glass);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    margin-bottom: 12px;
    overflow: hidden;
    min-height: 60px;
}

.content-placeholder {
    aspect-ratio: 16/9;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.3) 0%, rgba(139, 92, 246, 0.3) 100%);
    width: 100%;
    height: 100%;
}

/* 区块通用样式 */
section {
    padding: 120px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 80px;
}

.section-tag {
    display: inline-block;
    background: var(--gradient-3);
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 16px;
}

.section-title {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 16px;
}

.section-subtitle {
    font-size: 18px;
    color: var(--text-muted);
}

/* 特色功能 */
.features {
    position: relative;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.feature-card {
    background: var(--glass);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 32px;
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-3);
    transform: scaleX(0);
    transition: transform 0.4s ease;
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-glow);
}

.feature-card:hover::before {
    transform: scaleX(1);
}

.feature-icon-wrapper {
    width: 64px;
    height: 64px;
    background: var(--gradient-3);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
}

.feature-icon {
    color: var(--text);
}

.feature-card h3 {
    font-size: 20px;
    margin-bottom: 12px;
}

.feature-card p {
    color: var(--text-muted);
    line-height: 1.8;
}

/* 下载区域 */
.download {
    background: linear-gradient(180deg, var(--dark) 0%, var(--dark-light) 100%);
}

.download-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.download-card {
    background: var(--glass);
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    padding: 48px 32px;
    text-align: center;
    transition: all 0.4s ease;
    position: relative;
}

.download-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    border-color: var(--primary);
}

.platform-icon {
    width: 100px;
    height: 100px;
    margin: 0 auto 24px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.platform-icon .icon-bg {
    width: 80px;
    height: 80px;
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    transition: all 0.4s ease;
}

.platform-icon .icon-bg::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 20px;
    padding: 2px;
    background: linear-gradient(135deg, rgba(255,255,255,0.3), rgba(255,255,255,0.1));
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
}

.platform-icon.android-icon .icon-bg {
    background: linear-gradient(135deg, #3ddc84 0%, #2fbf6f 100%);
    box-shadow: 0 8px 30px rgba(61, 220, 132, 0.3);
}

.platform-icon.ios-icon .icon-bg {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    box-shadow: 0 8px 30px rgba(102, 126, 234, 0.3);
}

.platform-icon.tv-icon .icon-bg {
    background: linear-gradient(135deg, #ec4899 0%, #f97316 100%);
    box-shadow: 0 8px 30px rgba(236, 72, 153, 0.3);
}

.platform-icon .icon-bg svg {
    color: white;
    filter: drop-shadow(0 2px 8px rgba(0, 0, 0, 0.2));
    transition: all 0.3s ease;
}

.download-card:hover .platform-icon .icon-bg {
    transform: translateY(-5px) scale(1.05);
}

.download-card:hover .platform-icon .icon-bg svg {
    transform: rotate(5deg);
}

.download-card h3 {
    font-size: 28px;
    margin-bottom: 8px;
}

.platform-desc {
    color: var(--text-muted);
    margin-bottom: 32px;
}

.download-actions {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.btn-qr,
.btn-download {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 24px;
    border-radius: 12px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
}

.btn-qr {
    background: var(--dark-light);
    border: 1px solid var(--glass-border);
    color: var(--text);
}

.btn-qr:hover {
    background: var(--gradient-3);
    border-color: transparent;
}

.btn-download {
    background: var(--gradient-3);
    color: var(--text);
}

.btn-download:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(99, 102, 241, 0.4);
}

/* 二维码弹窗 */
.qr-modal {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(10px);
    z-index: 2000;
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.3s ease;
}

.qr-modal.active {
    display: flex;
}

.qr-content {
    background: var(--dark-light);
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    padding: 40px;
    text-align: center;
    position: relative;
    animation: scaleIn 0.3s ease;
}

.qr-close {
    position: absolute;
    top: 16px;
    right: 16px;
    width: 40px;
    height: 40px;
    background: var(--glass);
    border: 1px solid var(--glass-border);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--text);
    transition: all 0.3s ease;
}

.qr-close:hover {
    background: var(--accent);
    border-color: var(--accent);
}

.qr-code {
    margin-bottom: 20px;
}

.qr-code img {
    width: 220px;
    height: 220px;
    border-radius: 12px;
}

.qr-content p {
    color: var(--text-muted);
}

/* 关于我们 */
.about {
    background: var(--dark-light);
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.about-content p {
    font-size: 18px;
    color: var(--text-muted);
    line-height: 2;
    margin-bottom: 16px;
}

/* 页脚 */
.footer {
    background: var(--dark);
    border-top: 1px solid var(--glass-border);
    padding: 80px 0 40px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr;
    gap: 60px;
    margin-bottom: 60px;
}

.footer-brand {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
}

.footer-logo span {
    font-size: 20px;
    font-weight: 700;
}

.footer-tagline {
    color: var(--text-muted);
    font-size: 14px;
}

.footer-links h4,
.footer-info h4 {
    font-size: 16px;
    margin-bottom: 20px;
    color: var(--text);
}

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

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

.footer-links a {
    color: var(--text-muted);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

.footer-info p {
    color: var(--text-muted);
    margin-bottom: 12px;
}

.footer-info a {
    color: var(--primary);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-info a:hover {
    color: var(--secondary);
}

.footer-bottom {
    text-align: center;
    padding-top: 40px;
    border-top: 1px solid var(--glass-border);
}

.footer-bottom p {
    color: var(--text-muted);
    font-size: 14px;
}

/* 动画 */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes scaleIn {
    from { 
        opacity: 0;
        transform: scale(0.9);
    }
    to { 
        opacity: 1;
        transform: scale(1);
    }
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .features-grid,
    .download-grid,
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .hero-visual {
        display: none;
    }
}

@media (max-width: 768px) {
    .nav-menu,
    .btn-glass {
        display: none;
    }
    
    .hamburger {
        display: flex;
    }
    
    .nav-menu.active {
        display: flex;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: var(--dark);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 20px;
    }
    
    .hero-title {
        font-size: 42px;
    }
    
    .hero-desc {
        font-size: 16px;
    }
    
    .hero-btns {
        flex-direction: column;
        align-items: center;
    }
    
    .hero-stats {
        flex-wrap: wrap;
        gap: 20px;
    }
    
    .stat-divider {
        display: none;
    }
    
    .features-grid,
    .download-grid,
    .footer-grid {
        grid-template-columns: 1fr;
    }
    
    .section-title {
        font-size: 32px;
    }
}

/* 平滑滚动 */
html {
    scroll-behavior: smooth;
}