/* assets/css/style.css */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #6c5ce7;
    --primary-dark: #5649c0;
    --secondary: #00cec9;
    --light: #f8f9fa;
    --dark: #2d3436;
    --gray: #636e72;
    --transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

body {
    font-family: 'Segoe UI', system-ui, sans-serif;
    background: linear-gradient(135deg, #1a1a2e, #16213e);
    color: var(--light);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.container {
    max-width: 900px;
    width: 100%;
    text-align: center;
}

header h1 {
    font-size: 2.8rem;
    margin-bottom: 12px;
    background: linear-gradient(to right, var(--secondary), var(--primary));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    font-weight: 800;
}

header h1 span {
    color: var(--light);
    text-shadow: 0 0 10px rgba(108, 92, 231, 0.5);
}

header p {
    font-size: 1.1rem;
    color: #a0aec0;
    margin-bottom: 40px;
}

.tabs {
    margin: 0 auto 40px;
    width: 100%;
}

.tab-nav {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-bottom: 30px;
    flex-wrap: wrap;
}

.tab-btn {
    background: rgba(255, 255, 255, 0.1);
    border: none;
    padding: 12px 24px;
    border-radius: 30px;
    color: #cbd5e0;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    backdrop-filter: blur(4px);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.tab-btn:hover {
    background: rgba(255, 255, 255, 0.2);
}

.tab-btn.active {
    background: var(--primary);
    color: white;
    box-shadow: 0 4px 15px rgba(108, 92, 231, 0.4);
}

.tab-content {
    position: relative;
    height: 320px;
    overflow: hidden;
}

.tab-pane {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.4s ease, transform 0.4s ease;
    padding: 0 20px;
}

.tab-pane.active {
    opacity: 1;
    transform: translateY(0);
    z-index: 10;
}

.card {
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 30px;
    max-width: 600px;
    margin: 0 auto;
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.card h2 {
    font-size: 1.8rem;
    margin-bottom: 16px;
    color: white;
}

.card p {
    font-size: 1.05rem;
    line-height: 1.6;
    color: #e2e8f0;
    margin-bottom: 24px;
}

.btn {
    display: inline-block;
    background: var(--primary);
    color: white;
    padding: 12px 28px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    border: none;
    cursor: pointer;
}

.btn:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(108, 92, 231, 0.5);
}

.coming-soon .badge {
    display: inline-block;
    background: rgba(255, 255, 255, 0.15);
    color: #a0aec0;
    padding: 8px 20px;
    border-radius: 20px;
    font-weight: 600;
    margin-top: 10px;
}

footer {
    color: #718096;
    font-size: 0.9rem;
}

/* 响应式 */
@media (max-width: 600px) {
    header h1 {
        font-size: 2.2rem;
    }

    .tab-btn {
        padding: 10px 16px;
        font-size: 0.95rem;
    }

    .card {
        padding: 20px;
    }
}