/* ============================================
   落月导航 - 全局奢华暗黑风格
   ============================================ */

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

:root {
    --bg-primary: #08080e;
    --bg-secondary: #0e0e18;
    --bg-card: rgba(255, 255, 255, 0.025);
    --bg-card-hover: rgba(255, 255, 255, 0.06);
    --text-primary: #f0f0f5;
    --text-secondary: #9494a8;
    --accent-gold: #d4af37;
    --accent-gold-light: #f4e4a1;
    --accent-purple: #8b5cf6;
    --accent-blue: #5b9cf5;
    --accent-cyan: #06b6d4;
    --accent-rose: #f472b6;
    --border-color: rgba(212, 175, 55, 0.2);
    --border-subtle: rgba(255, 255, 255, 0.06);
    --shadow-glow: 0 0 60px rgba(212, 175, 55, 0.12);
    --shadow-card: 0 8px 40px rgba(0, 0, 0, 0.5);
    --gradient-primary: linear-gradient(135deg, #08080e 0%, #0e0e18 50%, #0a0a14 100%);
    --gradient-accent: linear-gradient(135deg, var(--accent-gold) 0%, #c9a84c 50%, var(--accent-purple) 100%);
    --gradient-button: linear-gradient(135deg, rgba(212, 175, 55, 0.15) 0%, rgba(139, 92, 246, 0.15) 100%);
    --gradient-button-hover: linear-gradient(135deg, rgba(212, 175, 55, 0.35) 0%, rgba(139, 92, 246, 0.35) 100%);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    background: var(--gradient-primary);
    background-attachment: fixed;
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
}

/* 动态星空背景 */
body::before {
    content: '';
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background-image: 
        radial-gradient(1.5px 1.5px at 5% 15%, rgba(212, 175, 55, 0.4), transparent),
        radial-gradient(1px 1px at 15% 25%, rgba(139, 92, 246, 0.35), transparent),
        radial-gradient(1.5px 1.5px at 25% 8%, rgba(6, 182, 212, 0.3), transparent),
        radial-gradient(1px 1px at 35% 45%, rgba(212, 175, 55, 0.35), transparent),
        radial-gradient(1.5px 1.5px at 45% 18%, rgba(244, 114, 182, 0.3), transparent),
        radial-gradient(1px 1px at 55% 55%, rgba(139, 92, 246, 0.35), transparent),
        radial-gradient(1.5px 1.5px at 65% 30%, rgba(212, 175, 55, 0.3), transparent),
        radial-gradient(1px 1px at 75% 60%, rgba(6, 182, 212, 0.35), transparent),
        radial-gradient(1.5px 1.5px at 85% 12%, rgba(91, 156, 245, 0.3), transparent),
        radial-gradient(1px 1px at 95% 40%, rgba(212, 175, 55, 0.35), transparent),
        radial-gradient(1.5px 1.5px at 10% 70%, rgba(139, 92, 246, 0.3), transparent),
        radial-gradient(1px 1px at 30% 80%, rgba(212, 175, 55, 0.3), transparent),
        radial-gradient(1.5px 1.5px at 50% 75%, rgba(244, 114, 182, 0.25), transparent),
        radial-gradient(1px 1px at 70% 85%, rgba(6, 182, 212, 0.3), transparent),
        radial-gradient(1.5px 1.5px at 90% 70%, rgba(212, 175, 55, 0.3), transparent);
    background-size: 250px 250px;
    animation: twinkle 6s ease-in-out infinite;
    opacity: 0.6;
    z-index: 0;
    pointer-events: none;
}

@keyframes twinkle {
    0%, 100% { opacity: 0.35; }
    33% { opacity: 0.7; }
    66% { opacity: 0.45; }
}

/* 霓虹光晕 */
.glow-effect {
    position: fixed;
    border-radius: 50%;
    filter: blur(80px);
    pointer-events: none;
    z-index: 0;
    animation: float 14s ease-in-out infinite;
}

.glow-effect:nth-child(1) {
    top: -120px; left: -80px;
    width: 500px; height: 500px;
    background: radial-gradient(circle, rgba(212, 175, 55, 0.12) 0%, transparent 70%);
}

.glow-effect:nth-child(2) {
    bottom: -150px; right: -100px;
    width: 450px; height: 450px;
    background: radial-gradient(circle, rgba(139, 92, 246, 0.1) 0%, transparent 70%);
    animation-delay: 5s;
}

.glow-effect:nth-child(3) {
    top: 40%; left: 50%;
    transform: translate(-50%, -50%);
    width: 600px; height: 600px;
    background: radial-gradient(circle, rgba(6, 182, 212, 0.06) 0%, transparent 70%);
    animation-delay: 9s;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    25% { transform: translate(40px, -30px) scale(1.05); }
    50% { transform: translate(-20px, 20px) scale(0.95); }
    75% { transform: translate(-30px, -40px) scale(1.03); }
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem 1.5rem;
    position: relative;
    z-index: 1;
}

/* 头部 */
header {
    text-align: center;
    padding: 4rem 0 3rem;
    position: relative;
}

.logo {
    display: inline-block;
    position: relative;
    margin-bottom: 1.2rem;
}

.logo h1 {
    font-size: 4.5rem;
    font-weight: 900;
    background: linear-gradient(135deg, #d4af37 0%, #f4e4a1 30%, #c9a84c 60%, #e8c547 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: 6px;
    text-transform: uppercase;
    position: relative;
    filter: drop-shadow(0 0 40px rgba(212, 175, 55, 0.4));
}

.logo::after {
    content: '';
    position: absolute;
    bottom: -14px;
    left: 50%;
    transform: translateX(-50%);
    width: 120px;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--accent-gold), var(--accent-purple), var(--accent-gold), transparent);
    border-radius: 2px;
    box-shadow: 0 0 30px rgba(212, 175, 55, 0.5);
}

.subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    letter-spacing: 4px;
    margin-top: 1.8rem;
    opacity: 0.7;
    font-weight: 300;
}

/* 功能网格 */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin: 3.5rem 0;
}

.feature-card {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border-subtle);
    border-radius: 20px;
    padding: 2.2rem 1.8rem;
    transition: all 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
    overflow: hidden;
    cursor: pointer;
    text-decoration: none;
    color: inherit;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    border-radius: 20px;
    border: 1px solid transparent;
    background: linear-gradient(135deg, rgba(212, 175, 55, 0.3), transparent, rgba(139, 92, 246, 0.3)) border-box;
    -webkit-mask: linear-gradient(#fff 0 0) padding-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    opacity: 0;
    transition: opacity 0.5s;
    pointer-events: none;
}

.feature-card::after {
    content: '';
    position: absolute;
    top: -100%; left: -100%;
    width: 300%; height: 300%;
    background: radial-gradient(circle at center, rgba(255,255,255,0.03) 0%, transparent 60%);
    opacity: 0;
    transition: opacity 0.5s;
    pointer-events: none;
}

.feature-card:hover {
    transform: translateY(-10px);
    background: var(--bg-card-hover);
    border-color: rgba(212, 175, 55, 0.4);
    box-shadow: 0 0 60px rgba(212, 175, 55, 0.1), 0 20px 50px rgba(0, 0, 0, 0.5);
}

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

.feature-card:hover::after {
    opacity: 1;
}

.feature-icon {
    width: 64px;
    height: 64px;
    border-radius: 18px;
    background: var(--gradient-button);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.2rem;
    border: 1px solid rgba(212, 175, 55, 0.3);
    font-size: 1.8rem;
    transition: all 0.4s;
    position: relative;
}

.feature-card:hover .feature-icon {
    transform: scale(1.08);
    box-shadow: 0 0 30px rgba(212, 175, 55, 0.2);
}

.feature-card h3 {
    font-size: 1.35rem;
    margin-bottom: 0.6rem;
    font-weight: 700;
    letter-spacing: 1px;
    transition: color 0.3s;
}

.feature-card:hover h3 {
    color: var(--accent-gold);
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 0.92rem;
    line-height: 1.6;
}

.badge {
    display: inline-block;
    padding: 0.3rem 0.9rem;
    border-radius: 20px;
    font-size: 0.72rem;
    font-weight: 600;
    margin-top: 1.2rem;
    letter-spacing: 0.5px;
}

.badge.available {
    color: #4ade80;
    background: rgba(74, 222, 128, 0.08);
    border: 1px solid rgba(74, 222, 128, 0.2);
}

.badge.coming-soon {
    color: #fbbf24;
    background: rgba(251, 191, 36, 0.08);
    border: 1px solid rgba(251, 191, 36, 0.2);
}

/* 频道 */
.channel-section {
    background: linear-gradient(135deg, rgba(212, 175, 55, 0.06) 0%, rgba(139, 92, 246, 0.06) 100%);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    padding: 2.5rem;
    margin: 2.5rem 0;
    text-align: center;
    backdrop-filter: blur(20px);
    position: relative;
    overflow: hidden;
}

.channel-section::before {
    content: '';
    position: absolute;
    top: -50%; left: -50%;
    width: 200%; height: 200%;
    background: radial-gradient(circle, rgba(212, 175, 55, 0.05) 0%, transparent 60%);
    animation: rotate 20s linear infinite;
    pointer-events: none;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.channel-section h2 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    letter-spacing: 2px;
    font-weight: 600;
    position: relative;
    z-index: 1;
}

.channel-link {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.9rem 2.2rem;
    background: var(--gradient-button);
    border: 1px solid rgba(212, 175, 55, 0.4);
    border-radius: 30px;
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 600;
    transition: all 0.4s;
    letter-spacing: 1px;
    position: relative;
    z-index: 1;
}

.channel-link:hover {
    background: var(--gradient-button-hover);
    box-shadow: 0 0 40px rgba(212, 175, 55, 0.3);
    transform: scale(1.04);
    border-color: var(--accent-gold);
}

/* 页脚 */
footer {
    text-align: center;
    padding: 2.5rem 0;
    color: var(--text-secondary);
    border-top: 1px solid var(--border-subtle);
    margin-top: 4rem;
    font-size: 0.85rem;
    letter-spacing: 1px;
    opacity: 0.6;
}

/* 按钮 */
.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.9rem 2rem;
    background: var(--gradient-button);
    border: 1px solid rgba(212, 175, 55, 0.4);
    border-radius: 14px;
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.4s;
    cursor: pointer;
    letter-spacing: 1px;
}

.btn-primary:hover {
    background: var(--gradient-button-hover);
    border-color: var(--accent-gold);
    box-shadow: 0 0 40px rgba(212, 175, 55, 0.25);
    transform: translateY(-3px);
}

.btn-primary:active {
    transform: translateY(0);
}

/* 响应式 */
@media (max-width: 768px) {
    .logo h1 {
        font-size: 2.8rem;
        letter-spacing: 3px;
    }
    .features-grid {
        grid-template-columns: 1fr;
    }
    .container {
        padding: 1rem;
    }
    header {
        padding: 2.5rem 0 2rem;
    }
}

/* 通知 */
.notification {
    position: fixed;
    top: 20px; right: 20px;
    background: rgba(34, 197, 94, 0.95);
    color: #fff;
    padding: 1rem 1.5rem;
    border-radius: 12px;
    backdrop-filter: blur(10px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    transform: translateX(150%);
    transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    z-index: 1000;
    font-weight: 500;
    font-size: 0.9rem;
}

.notification.show {
    transform: translateX(0);
}

.notification.error {
    background: rgba(239, 68, 68, 0.95);
}