/**
 * 全局样式文件
 * 定义主色调和通用样式
 */

:root {
    --primary-color: #2C3E50;
    --primary-dark: #2980b9;
    --primary-light: #5dade2;
    --secondary-color: #ecf0f1;
    --text-color: #2c3e50;
    --text-light: #666;
    --text-muted: #999;
    --success-color: #2ecc71;
    --danger-color: #e74c3c;
    --warning-color: #f39c12;
    --info-color: #3498db;
    --border-color: #ddd;
    --bg-color: #f5f5f5;
    --card-bg: #fff;
    --sidebar-bg: #102030;
    --sidebar-text: #ecf0f1;
    --nav-hover: #2c3e50;
    --nav-active: #3498db;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Microsoft YaHei", "PingFang SC", "Helvetica Neue", Arial, sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: var(--primary-dark);
}

.btn {
    display: inline-block;
    padding: 10px 20px;
    border: none;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.3s ease;
    text-align: center;
    vertical-align: middle;
}

.btn-primary {
    background-color: var(--primary-color);
    color: var(--secondary-color);
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(42, 126, 251, 0.3);
}

.btn-secondary {
    background-color: var(--info-color);
    color: var(--secondary-color);
}

.btn-secondary:hover {
    background-color: #2980b9;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(52, 152, 219, 0.3);
}

.btn-danger {
    background-color: var(--danger-color);
    color: var(--secondary-color);
}

.btn-danger:hover {
    background-color: #c0392b;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(231, 76, 60, 0.3);
}

.btn-success {
    background-color: var(--success-color);
    color: var(--secondary-color);
}

.btn-success:hover {
    background-color: #27ae60;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(46, 204, 113, 0.3);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
    box-shadow: none !important;
}

.form-input {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 14px;
    color: var(--text-color);
    outline: none;
    transition: all 0.3s ease;
    background-color: var(--card-bg);
}

.form-input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(42, 126, 251, 0.1);
}

.form-textarea {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 14px;
    color: var(--text-color);
    outline: none;
    transition: all 0.3s ease;
    resize: vertical;
    min-height: 120px;
    font-family: inherit;
    background-color: var(--card-bg);
}

.form-textarea:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(42, 126, 251, 0.1);
}

.form-label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-color);
    font-weight: 600;
    font-size: 14px;
}

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

.card {
    background-color: var(--card-bg);
    padding: 25px;
    border-radius: 8px;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
}

.message {
    padding: 12px 16px;
    border-radius: 6px;
    margin-bottom: 20px;
    font-size: 14px;
    border-left: 4px solid;
}

.message.success {
    background-color: #d4edda;
    color: #155724;
    border-color: var(--success-color);
}

.message.error {
    background-color: #f8d7da;
    color: #721c24;
    border-color: var(--danger-color);
}

.message.warning {
    background-color: #fff3cd;
    color: #856404;
    border-color: var(--warning-color);
}

.message.info {
    background-color: #d1ecf1;
    color: #0c5460;
    border-color: var(--info-color);
}

.table {
    width: 100%;
    border-collapse: collapse;
    background-color: var(--card-bg);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
}

.table th,
.table td {
    padding: 12px 15px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.table th {
    background-color: #f8f9fa;
    color: var(--text-color);
    font-weight: 600;
    font-size: 14px;
}

.table tr:hover {
    background-color: #f8f9fa;
}

.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal-content {
    background-color: var(--card-bg);
    padding: 30px;
    border-radius: 8px;
    width: 90%;
    max-width: 500px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
    max-height: 90vh;
    overflow-y: auto;
}

.modal-title {
    font-size: 18px;
    color: var(--text-color);
    margin-bottom: 20px;
    font-weight: 600;
}

.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    margin-top: 20px;
}

input[type="checkbox"] {
    cursor: pointer;
    width: 16px;
    height: 16px;
    accent-color: var(--primary-color);
}

select {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 14px;
    color: var(--text-color);
    outline: none;
    transition: all 0.3s ease;
    background-color: var(--card-bg);
    cursor: pointer;
}

select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(42, 126, 251, 0.1);
}

@media (max-width: 768px) {
    .btn {
        padding: 8px 16px;
        font-size: 13px;
    }
    
    .form-input,
    .form-textarea,
    select {
        padding: 8px 10px;
        font-size: 13px;
    }
    
    .modal-content {
        padding: 20px;
        width: 95%;
    }
    
    .sidebar {
        width: 200px;
    }
}

/* 侧边栏样式 */
.sidebar {
    width: 250px;
    background-color: var(--sidebar-bg);
    color: var(--sidebar-text);
    padding: 20px 0;
    flex-shrink: 0;
}

.nav-menu {
    list-style: none;
    padding: 0;
    margin: 0;
}

.nav-item {
    margin-bottom: 5px;
}

.nav-link {
    display: block;
    padding: 12px 30px;
    color: var(--sidebar-text);
    text-decoration: none;
    transition: all 0.3s ease;
    font-size: 14px;
}

.nav-link:hover {
    background-color: var(--nav-hover);
    padding-left: 40px;
}

.nav-link.active {
    background-color: var(--nav-active);
    font-weight: 600;
}

.nav-link i {
    margin-right: 10px;
    width: 20px;
    text-align: center;
    display: inline-block;
}

/* 顶部导航 */
.top-nav {
    background-color: #2c3e50;
    color: #fff;
    padding: 15px 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.nav-left h1 {
    font-size: 20px;
    font-weight: 600;
}

.nav-left .logo-img {
    max-height: 80px;
    max-width: 350px;
    object-fit: contain;
}

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

.admin-info {
    font-size: 14px;
}

.logout-btn {
    background-color: var(--danger-color);
    color: #fff;
    padding: 8px 16px;
    border: none;
    border-radius: 4px;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
}

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