/* index.css - 首页样式 */

/* ===== 重置和基础样式 ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background: linear-gradient(135deg, #f5f7fa 0%, #e4e8f0 100%);
    min-height: 100vh;
}

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

/* ===== 头部样式 ===== */
.header {
    text-align: center;
    margin-bottom: 40px;
    padding: 30px 20px;
    background: white;
    border-radius: 16px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
}

.header h1 {
    color: #2c3e50;
    margin-bottom: 10px;
    font-size: 2.8rem;
    font-weight: 800;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.header h1 i {
    margin-right: 15px;
    color: #667eea;
}

.header p {
    color: #7f8c8d;
    font-size: 1.2rem;
    max-width: 600px;
    margin: 0 auto;
}

/* ===== 功能区样式 ===== */
.features-section {
    margin-bottom: 40px;
}

.section-header {
    text-align: center;
    margin-bottom: 30px;
    padding: 0 20px;
}

.section-header h2 {
    color: #2c3e50;
    font-size: 2.2rem;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
}

.section-header h2 i {
    color: #667eea;
}

.section-header p {
    color: #7f8c8d;
    font-size: 1.1rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 25px;
    padding: 0 20px;
}

.feature-card {
    background: white;
    border-radius: 16px;
    padding: 30px;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.08);
    border: 2px solid transparent;
    transition: all 0.3s ease;
    cursor: pointer;
    text-decoration: none;
    color: inherit;
    display: block;
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.12);
    border-color: #667eea;
}

.feature-card.main-feature {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    grid-column: 1 / -1;
}

.feature-card.main-feature:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(102, 126, 234, 0.3);
}

.feature-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    font-size: 2rem;
    color: white;
}

.main-feature .feature-icon {
    background: white;
    color: #667eea;
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    font-weight: 700;
}

.feature-card p {
    color: #666;
    margin-bottom: 20px;
    line-height: 1.6;
}

.main-feature p {
    color: rgba(255, 255, 255, 0.9);
}

.feature-stats {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    margin-bottom: 25px;
}

.stat-item {
    background: rgba(255, 255, 255, 0.1);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.9rem;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.main-feature .stat-item {
    background: rgba(255, 255, 255, 0.2);
}

.feature-action {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
    color: #667eea;
    transition: gap 0.3s ease;
}

.feature-card:hover .feature-action {
    gap: 15px;
}

.main-feature .feature-action {
    color: white;
}

/* ===== 快速搜索区样式 ===== */
.quick-search-section {
    margin-bottom: 40px;
    padding: 30px;
    background: white;
    border-radius: 16px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
}

.quick-search-box {
    max-width: 800px;
    margin: 0 auto;
}

.search-input-group {
    display: flex;
    gap: 15px;
    margin-bottom: 20px;
}

.search-input-group input {
    flex: 1;
    padding: 18px 25px;
    border: 2px solid #e1e5eb;
    border-radius: 12px;
    font-size: 16px;
    transition: all 0.3s ease;
    background: #f8f9fa;
}

.search-input-group input:focus {
    outline: none;
    border-color: #667eea;
    background: white;
    box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.1);
}

.search-input-group button {
    padding: 18px 35px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    white-space: nowrap;
}

.search-input-group button:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(102, 126, 234, 0.3);
}

.search-hints {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
    font-size: 14px;
}

.hint {
    color: #7f8c8d;
    font-weight: 500;
}

.tag {
    background: #f0f2f5;
    padding: 8px 16px;
    border-radius: 20px;
    color: #667eea;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    border: 1px solid transparent;
}

.tag:hover {
    background: #667eea;
    color: white;
    border-color: #667eea;
}

/* ===== 系统信息区样式 ===== */
.info-section {
    margin-bottom: 40px;
}

.info-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
    padding: 0 20px;
}

.info-card {
    background: white;
    border-radius: 16px;
    padding: 25px;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s ease;
}

.info-card:hover {
    transform: translateY(-5px);
}

.info-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    font-size: 1.8rem;
    color: white;
}

.info-card:nth-child(2) .info-icon {
    background: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
}

.info-card:nth-child(3) .info-icon {
    background: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
}

.info-content h3 {
    color: #2c3e50;
    font-size: 1.3rem;
    margin-bottom: 20px;
    font-weight: 600;
}

.info-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
}

.stat {
    text-align: center;
    padding: 15px;
    background: #f8f9fa;
    border-radius: 12px;
    transition: background 0.3s ease;
}

.stat:hover {
    background: #e9ecef;
}

.stat-value {
    display: block;
    font-size: 1.8rem;
    font-weight: 700;
    color: #667eea;
    margin-bottom: 5px;
}

.stat-label {
    font-size: 0.9rem;
    color: #7f8c8d;
    display: block;
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 15px;
    padding: 12px;
    background: #f8f9fa;
    border-radius: 10px;
    transition: background 0.3s ease;
}

.status-indicator:hover {
    background: #e9ecef;
}

.status-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: #ccc;
}

.status-dot.active {
    background: #43e97b;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { opacity: 1; }
    50% { opacity: 0.5; }
    100% { opacity: 1; }
}

.update-item {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 15px;
    padding: 12px;
    background: #f8f9fa;
    border-radius: 10px;
    transition: background 0.3s ease;
}

.update-item:hover {
    background: #e9ecef;
}

.update-item i {
    color: #667eea;
}

.update-item span {
    color: #555;
    font-size: 0.95rem;
}

/* ===== 底部导航样式 ===== */
.footer-nav {
    margin-top: auto;
    padding: 25px;
    background: white;
    border-radius: 16px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
}

.nav-links {
    display: flex;
    justify-content: center;
    gap: 30px;
    flex-wrap: wrap;
}

.nav-links a {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 15px 25px;
    border-radius: 12px;
    text-decoration: none;
    color: #7f8c8d;
    transition: all 0.3s ease;
    min-width: 80px;
}

.nav-links a:hover {
    background: #f8f9fa;
    color: #667eea;
    transform: translateY(-3px);
}

.nav-links a.active {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.nav-links a i {
    font-size: 1.5rem;
}

.nav-links a span {
    font-size: 0.9rem;
    font-weight: 500;
}

/* ===== 响应式设计 ===== */
@media (max-width: 768px) {
    .container {
        padding: 15px;
    }
    
    .header h1 {
        font-size: 2.2rem;
    }
    
    .section-header h2 {
        font-size: 1.8rem;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
        padding: 0;
    }
    
    .search-input-group {
        flex-direction: column;
    }
    
    .search-input-group input,
    .search-input-group button {
        width: 100%;
    }
    
    .info-cards {
        grid-template-columns: 1fr;
        padding: 0;
    }
    
    .nav-links {
        gap: 15px;
    }
    
    .nav-links a {
        padding: 12px 20px;
        min-width: 70px;
    }
}

@media (max-width: 480px) {
    .header h1 {
        font-size: 1.8rem;
    }
    
    .header p {
        font-size: 1rem;
    }
    
    .section-header h2 {
        font-size: 1.5rem;
    }
    
    .feature-card {
        padding: 20px;
    }
    
    .quick-search-section {
        padding: 20px;
    }
    
    .info-stats {
        grid-template-columns: 1fr;
    }
    
    .nav-links {
        gap: 10px;
    }
    
    .nav-links a {
        padding: 10px 15px;
    }
}

/* ===== 工具类 ===== */
.hidden {
    display: none !important;
}