/**
 * 模块化头部样式文件
 * 从 header-modular.php 中提取的样式
 */

/* 基础布局样式 */
body {
    margin: 0;
    padding: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: #f8fafc;
    color: #2d3748;
    font-size: 16px;
    line-height: 1.6;
}

.main-content {
    margin-left: 260px;
    min-height: 100vh;
    background: #f8fafc;
}

.content {
    padding: 25px;
}

.content-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    background: white;
    padding: 25px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.content-header h1 {
    margin: 0;
    color: #2d3748;
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 28px;
}

.header-actions {
    display: flex;
    gap: 10px;
}

/* 按钮样式 */
.btn {
    padding: 12px 18px;
    border: none;
    border-radius: 6px;
    text-decoration: none;
    align-items: center;
    gap: 8px;
    font-size: 15px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-primary {
    background: #4299e1;
    color: white;
}

.btn-primary:hover {
    background: #3182ce;
    color: white;
    text-decoration: none;
}

.btn-success {
    background: #48bb78;
    color: white;
}

.btn-success:hover {
    background: #38a169;
    color: white;
    text-decoration: none;
}

.btn-secondary {
    background: #a0aec0;
    color: white;
}

.btn-secondary:hover {
    background: #718096;
    color: white;
    text-decoration: none;
}

.btn-danger {
    background: #f56565;
    color: white;
}

.btn-danger:hover {
    background: #e53e3e;
    color: white;
    text-decoration: none;
}

.btn-info {
    background: #4299e1;
    color: white;
}

.btn-info:hover {
    background: #3182ce;
    color: white;
    text-decoration: none;
}

.btn-warning {
    background: #ed8936;
    color: white;
}

.btn-warning:hover {
    background: #dd6b20;
    color: white;
    text-decoration: none;
}

.btn-sm {
    padding: 8px 14px;
    font-size: 14px;
}

/* 表单样式 */
.form-control {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid #d1d5db;
    border-radius: 6px;
    font-size: 15px;
    transition: border-color 0.2s;
}

.form-control:focus {
    outline: none;
    border-color: #4299e1;
    box-shadow: 0 0 0 3px rgba(66, 153, 225, 0.1);
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #374151;
    font-size: 15px;
}

/* 搜索表单全局样式 - 已移至 styles.css，此处保留兼容性 */
.search-section {
    background: white;
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

/* 旧版搜索表单样式 - 保持向后兼容，但优先级低于新样式 */
.search-form {
    display: flex;
    gap: 20px;
    align-items: end;
    flex-wrap: wrap;
}

.search-form .form-group {
    margin-bottom: 0;
    box-sizing: border-box;
}

.search-form .form-group:first-child {
    flex: 0 0 250px;
    min-width: 250px;
    max-width: 250px;
}

.search-form .form-group:not(:first-child):not(.btn-group) {
    flex: 0 0 140px;
    min-width: 140px;
    max-width: 140px;
}

.search-form .btn {
    flex: 0 0 auto;
    white-space: nowrap;
}

@media (max-width: 768px) {
    .search-form {
        flex-wrap: wrap;
    }
    
    .search-form .form-group {
        flex: 1 1 100%;
        min-width: 100%;
        max-width: none;
    }
}

/* 表格样式 */
.table {
    width: 100%;
    border-collapse: collapse;
    background: white;
}

.table th,
.table td {
    padding: 15px 12px;
    text-align: left;
    border-bottom: 1px solid #e2e8f0;
    font-size: 15px;
}

.table th {
    background: #dbeafe;
    font-weight: 600;
    color: #1e40af;
}

.table tbody tr:hover {
    background: #f7fafc;
}

/* 消息提示 */
.alert {
    padding: 18px;
    border-radius: 8px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    font-size: 15px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.alert::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: currentColor;
    opacity: 0.3;
}

.alert-success {
    background: linear-gradient(135deg, #f0fff4 0%, #e6fffa 100%);
    border: 1px solid #9ae6b4;
    color: #22543d;
}

.alert-danger {
    background: linear-gradient(135deg, #fef2f2 0%, #fee2e2 100%);
    border: 1px solid #fecaca;
    color: #dc2626;
}

.alert-warning {
    background: linear-gradient(135deg, #fffbeb 0%, #fef3c7 100%);
    border: 1px solid #fed7aa;
    color: #92400e;
}

.alert-info {
    background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 100%);
    border: 1px solid #bfdbfe;
    color: #1e40af;
}

.alert i {
    margin-right: 12px;
    font-size: 16px;
    flex-shrink: 0;
}

.alert span {
    flex: 1;
    line-height: 1.4;
}

.alert .btn-close {
    margin-left: 12px;
    padding: 4px;
    border-radius: 4px;
    transition: background-color 0.2s ease;
    flex-shrink: 0;
}

.alert .btn-close:hover {
    background-color: rgba(0, 0, 0, 0.1);
}

/* 响应式 */
@media (max-width: 768px) {
    .main-content {
        margin-left: 0;
    }
    
    .content-header {
        flex-direction: column;
        gap: 15px;
        align-items: stretch;
        padding: 20px;
    }
    
    .content-header h1 {
        font-size: 24px;
    }
    
    .header-actions {
        justify-content: center;
    }
}

/* 文本样式 */
.text-center {
    text-align: center;
}

.text-muted {
    color: #718096;
    font-size: 14px;
}

.text-primary {
    color: #4299e1;
}

.text-success {
    color: #48bb78;
}

.text-danger {
    color: #f56565;
}

.text-warning {
    color: #ed8936;
}

/* 模块化侧边栏样式 */
.sidebar {
    position: fixed;
    left: 0;
    top: 0;
    width: 260px;
    height: 100vh;
    background: linear-gradient(180deg, #2d3748 0%, #1a202c 100%);
    color: white;
    overflow-y: auto;
    z-index: 1000;
    transition: transform 0.3s ease;
    box-shadow: 4px 0 20px rgba(0, 0, 0, 0.1);
}

.sidebar-header {
    padding: 30px 25px;
    border-bottom: 1px solid #4a5568;
    text-align: center;
    background: linear-gradient(135deg, #2d3748 0%, #1a202c 100%);
    position: relative;
    overflow: hidden;
}

.sidebar-header::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(102, 126, 234, 0.1) 0%, transparent 70%);
    animation: pulse 4s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 0.5; }
    50% { transform: scale(1.1); opacity: 0.8; }
}

.sidebar-header h2 {
    font-size: 18px;
    font-weight: 800;
    margin-bottom: 10px;
    color: #ffffff;
    position: relative;
    z-index: 1;
    text-shadow: 0 2px 4px rgba(0,0,0,0.3);
    letter-spacing: 0.5px;
    line-height: 1.1;
    white-space: nowrap;
}

.sidebar-header p {
    font-size: 10px;
    color: #cbd5e0;
    margin-top: 6px;
    margin-bottom: 0;
    position: relative;
    z-index: 1;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 500;
}

.sidebar-nav {
    padding: 20px 0;
}

.nav-section {
    margin-bottom: 25px;
    position: relative;
}

.nav-section::after {
    content: '';
    position: absolute;
    bottom: -12px;
    left: 25px;
    right: 25px;
    height: 1px;
    background: linear-gradient(90deg, transparent, #4a5568, transparent);
}

.nav-section:last-child::after {
    display: none;
}

.nav-section-title {
    padding: 14px 25px 10px;
    font-size: 16px;
    font-weight: 700;
    color: #a0aec0;
    text-transform: uppercase;
    letter-spacing: 1px;
    position: relative;
    display: flex;
    align-items: center;
}

.nav-section-title::before {
    content: '';
    width: 3px;
    height: 3px;
    background: #667eea;
    border-radius: 50%;
    margin-right: 8px;
    box-shadow: 0 0 6px rgba(102, 126, 234, 0.5);
}

.nav-item {
    display: flex;
    align-items: center;
    padding: 16px 25px;
    color: #e2e8f0;
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border-left: 3px solid transparent;
    border-radius: 0 25px 25px 0;
    margin: 2px 8px 2px 0;
    position: relative;
    overflow: hidden;
    font-weight: 500;
    font-size: 15px;
}

.nav-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
    transition: left 0.5s ease;
}

.nav-item:hover::before {
    left: 100%;
}

.nav-item:hover {
    background: linear-gradient(135deg, #4a5568 0%, #2d3748 100%);
    border-left-color: #667eea;
    color: #ffffff;
    transform: translateX(5px);
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.2);
    text-decoration: none;
}

.nav-item.active {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-left-color: #667eea;
    color: #ffffff;
    transform: translateX(5px);
    box-shadow: 0 4px 20px rgba(102, 126, 234, 0.3);
}

.nav-item.active::after {
    content: '';
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 20px;
    background: #ffffff;
    border-radius: 2px 0 0 2px;
}

.nav-item i {
    width: 22px;
    margin-right: 14px;
    text-align: center;
    font-size: 17px;
    transition: transform 0.3s ease;
}

.nav-item:hover i,
.nav-item.active i {
    transform: scale(1.1);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
        box-shadow: 4px 0 20px rgba(0, 0, 0, 0.3);
        transition: transform 0.3s ease;
    }

    .sidebar.active {
        transform: translateX(0);
    }

    .main-content {
        margin-left: 0;
    }
}