/* assets/css/style.css */
:root {
    --primary: #3498db;
    --secondary: #2c3e50;
    --accent: #e74c3c;
    --light: #f8f9fa;
    --dark: #212529;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f5f7fb;
    color: var(--dark);
}

.navbar-brand {
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--primary);
}

.hero-section {
    background: linear-gradient(135deg, #3498db, #2c3e50);
    color: white;
    padding: 5rem 0;
    border-radius: 0 0 30px 30px;
    margin-bottom: 3rem;
}

.search-card {
    background: white;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    padding: 2rem;
    margin-bottom: 2rem;
}

.main-search {
    height: 60px;
    border-radius: 12px;
    font-size: 1.1rem;
    border: 2px solid var(--primary);
    padding-left: 20px;
}

.search-btn {
    height: 60px;
    border-radius: 12px;
    font-size: 1.1rem;
    font-weight: 600;
}

.category-card {
    background: white;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    transition: transform 0.3s ease;
    height: 100%;
}

.category-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.1);
}

.category-icon {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    background: var(--primary);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    margin: 0 auto 1rem;
}

.feature-card {
    background: white;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    border-left: 4px solid var(--primary);
    transition: all 0.3s ease;
}

.feature-card:hover {
    box-shadow: 0 8px 25px rgba(0,0,0,0.1);
    transform: translateY(-3px);
}

.footer {
    background: var(--secondary);
    color: white;
    padding: 3rem 0 1.5rem;
    margin-top: 3rem;
}

.btn-primary {
    background: var(--primary);
    border: none;
    padding: 10px 25px;
    border-radius: 10px;
    font-weight: 600;
}

.btn-primary:hover {
    background: #2980b9;
}

.btn-accent {
    background: var(--accent);
    color: white;
    border: none;
    padding: 10px 25px;
    border-radius: 10px;
    font-weight: 600;
}

.btn-accent:hover {
    background: #c0392b;
    color: white;
}

.section-title {
    position: relative;
    margin-bottom: 2rem;
    padding-bottom: 0.5rem;
    font-weight: 700;
    color: var(--secondary);
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 4px;
    background: var(--primary);
    border-radius: 2px;
}

.content-card {
    background: white;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    overflow: hidden;
    margin-bottom: 2rem;
}

.content-header {
    background: var(--primary);
    color: white;
    padding: 1rem 1.5rem;
}

.content-body {
    padding: 1.5rem;
}

.info-item {
    border-bottom: 1px solid #eee;
    padding: 0.8rem 0;
}

.info-item:last-child {
    border-bottom: none;
}

.info-label {
    font-weight: 600;
    color: var(--secondary);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .hero-section {
        padding: 3rem 0;
    }
    
    .main-search {
        margin-bottom: 1rem;
    }
    
    .mobile-bottom-nav {
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        background: white;
        box-shadow: 0 -3px 10px rgba(0,0,0,0.1);
        z-index: 1000;
        padding: 0.5rem 0;
    }
    
    .nav-item {
        text-align: center;
    }
    
    .nav-icon {
        font-size: 1.5rem;
        display: block;
        margin-bottom: 0.2rem;
    }
}