/* modern-style.css - 现代化样式 */

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #333;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
}

.modern-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    min-height: 100vh;
}

.modern-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 16px;
    padding: 16px 24px;
    margin-bottom: 32px;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.brand {
    font-size: 24px;
    font-weight: 700;
    color: #fff;
}

.nav-links {
    display: flex;
    gap: 20px;
    align-items: center;
}

.nav-links a {
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
    padding: 8px 16px;
    border-radius: 8px;
    transition: all 0.3s ease;
    font-weight: 500;
}

.nav-links a:hover {
    background: rgba(255, 255, 255, 0.2);
    color: #fff;
    transform: translateY(-1px);
}

.nav-links span {
    color: rgba(255, 255, 255, 0.8);
    font-size: 14px;
}

.modern-header {
    text-align: center;
    margin: 48px 0;
    color: #fff;
}

.modern-title {
    font-size: 48px;
    font-weight: 800;
    margin-bottom: 16px;
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.modern-subtitle {
    font-size: 20px;
    opacity: 0.9;
    font-weight: 400;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin: 32px 0;
}

.stat-card {
    background: rgba(255, 255, 255, 0.25);
    backdrop-filter: blur(10px);
    border-radius: 16px;
    padding: 24px;
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.3);
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.stat-card:hover {
    transform: translateY(-4px);
    background: rgba(255, 255, 255, 0.35);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

.stat-value {
    font-size: 32px;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 8px;
    text-shadow: 0 1px 2px rgba(255, 255, 255, 0.5);
}

.stat-label {
    font-size: 14px;
    color: #374151;
    font-weight: 600;
    text-shadow: 0 1px 2px rgba(255, 255, 255, 0.3);
}

.modern-grid {
    display: grid;
    gap: 24px;
    margin: 32px 0;
}

.modern-grid-2 {
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
}

.modern-grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.modern-card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 32px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.3);
    transition: all 0.3s ease;
}

.modern-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
}

.feature-card {
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    border-radius: 16px;
    padding: 24px;
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: all 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-4px);
    background: rgba(255, 255, 255, 0.2);
}

.feature-icon {
    font-size: 48px;
    margin-bottom: 16px;
}

.feature-title {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 12px;
    color: #fff;
}

.feature-desc {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.5;
}

.modern-form {
    margin-top: 24px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #374151;
}

.form-control {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid #e5e7eb;
    border-radius: 12px;
    font-size: 16px;
    transition: all 0.3s ease;
    background: #fff;
}

.form-control:focus {
    outline: none;
    border-color: #3b82f6;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.modern-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    background: linear-gradient(135deg, #3b82f6, #8b5cf6);
    color: #fff;
    text-decoration: none;
    border-radius: 12px;
    font-weight: 600;
    font-size: 16px;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    gap: 8px;
}

.modern-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(59, 130, 246, 0.4);
}

.modern-btn-full {
    width: 100%;
}

.modern-btn-success {
    background: linear-gradient(135deg, #10b981, #059669);
}

.modern-btn-success:hover {
    box-shadow: 0 8px 25px rgba(16, 185, 129, 0.4);
}

.modern-alert {
    padding: 16px 20px;
    border-radius: 12px;
    margin: 20px 0;
    border-left: 4px solid;
}

.modern-alert-error {
    background: #fef2f2;
    border-color: #ef4444;
    color: #dc2626;
}

.modern-alert-info {
    background: #eff6ff;
    border-color: #3b82f6;
    color: #1d4ed8;
}

.modern-alert strong {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
}

.fade-in-up {
    animation: fadeInUp 0.6s ease-out forwards;
    opacity: 0;
    transform: translateY(30px);
}

@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 兼容index.php使用的类名 */
.hero-bg {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 32px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.container.hero {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
}

.topnav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 1px solid #e2e8f0;
}

.topnav .brand {
    font-size: 24px;
    font-weight: 700;
    background: linear-gradient(45deg, #3b82f6, #8b5cf6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.topnav a {
    color: #3b82f6;
    text-decoration: none;
    transition: all 0.2s;
}

.topnav a:hover {
    color: #1d4ed8;
    text-decoration: none;
}

.card {
    background: #fff;
    border: 1px solid #e2e8f0;
    border-radius: 12px;
    padding: 20px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
    transition: transform 0.2s, box-shadow 0.2s;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.card-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
    color: #1e293b;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    background: linear-gradient(135deg, #3b82f6, #8b5cf6);
    color: #fff;
    text-decoration: none;
    border-radius: 12px;
    font-weight: 600;
    font-size: 16px;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    gap: 8px;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(59, 130, 246, 0.4);
    text-decoration: none;
}

.btn-success {
    background: linear-gradient(135deg, #10b981, #059669);
}

.btn-success:hover {
    box-shadow: 0 8px 25px rgba(16, 185, 129, 0.4);
}

.grid {
    display: grid;
    gap: 20px;
}

.grid.cols-2 {
    grid-template-columns: repeat(2, 1fr);
}

.grid.cols-3 {
    grid-template-columns: repeat(3, 1fr);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #374151;
}

.form-group input {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid #e5e7eb;
    border-radius: 12px;
    font-size: 16px;
    transition: all 0.3s ease;
    background: #fff;
}

.form-group input:focus {
    outline: none;
    border-color: #3b82f6;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.alert {
    padding: 16px 20px;
    border-radius: 12px;
    margin: 20px 0;
    border-left: 4px solid;
}

.alert-error {
    background: #fef2f2;
    border-color: #ef4444;
    color: #dc2626;
}

.alert-success {
    background: #ecfdf5;
    border: 1px solid #bbf7d0;
    color: #065f46;
}

.muted {
    color: #64748b;
}

@media (max-width: 768px) {
    .modern-container {
        padding: 16px;
    }
    
    .modern-nav {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }
    
    .nav-links {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .modern-title {
        font-size: 36px;
    }
    
    .modern-subtitle {
        font-size: 18px;
    }
    
    .modern-grid-2,
    .modern-grid-3 {
        grid-template-columns: 1fr;
    }
    
    .modern-card {
        padding: 24px;
    }
    
    .stats-grid {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    }
    
    .hero-bg {
        padding: 16px;
    }
    
    .container {
        margin: 0;
        padding: 20px;
    }
    
    .topnav {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }
    
    .grid.cols-2,
    .grid.cols-3 {
        grid-template-columns: 1fr;
    }
}