/* 
 * 后台管理样式
 */

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

:root {
    --primary-color: #3b82f6;
    --primary-dark: #2563eb;
    --primary-light: #60a5fa;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --text-color: #1f2937;
    --text-light: #6b7280;
    --text-muted: #9ca3af;
    --bg-color: #ffffff;
    --bg-light: #f9fafb;
    --bg-dark: #1f2937;
    --border-color: #e5e7eb;
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --radius: 8px;
    --sidebar-width: 260px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
    line-height: 1.5;
    color: var(--text-color);
    background-color: var(--bg-light);
}

/* 登录页面 */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
}

.login-container {
    width: 100%;
    max-width: 400px;
    padding: 20px;
}

.login-box {
    background: var(--bg-color);
    border-radius: var(--radius);
    padding: 40px;
    box-shadow: var(--shadow-lg);
}

.login-header {
    text-align: center;
    margin-bottom: 30px;
}

.login-header h1 {
    font-size: 24px;
    color: var(--text-color);
    margin-bottom: 8px;
}

.login-header p {
    color: var(--text-light);
    font-size: 14px;
}

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

.login-form label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-color);
    margin-bottom: 6px;
}

.login-footer {
    text-align: center;
    margin-top: 24px;
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
}

.login-footer a {
    color: var(--text-light);
    text-decoration: none;
    font-size: 14px;
}

.login-footer a:hover {
    color: var(--primary-color);
}

/* 后台布局 */
.admin-layout {
    display: flex;
    min-height: 100vh;
}

/* 侧边栏 */
.sidebar {
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    width: var(--sidebar-width);
    background: var(--bg-dark);
    color: white;
    display: flex;
    flex-direction: column;
    z-index: 100;
    transition: transform 0.3s ease;
}

.sidebar-header {
    padding: 20px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.sidebar-header h2 {
    font-size: 18px;
    font-weight: 600;
}

.sidebar-header span {
    font-size: 12px;
    color: var(--text-muted);
}

.sidebar-nav {
    flex: 1;
    padding: 16px 0;
    overflow-y: auto;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 20px;
    color: rgba(255,255,255,0.7);
    text-decoration: none;
    transition: all 0.2s;
}

.nav-item:hover {
    background: rgba(255,255,255,0.1);
    color: white;
}

.nav-item.active {
    background: var(--primary-color);
    color: white;
}

.sidebar-footer {
    padding: 16px;
    border-top: 1px solid rgba(255,255,255,0.1);
}

.logout-btn {
    display: flex;
    align-items: center;
    gap: 12px;
    width: 100%;
    padding: 12px;
    border-radius: var(--radius);
    color: rgba(255,255,255,0.7);
    text-decoration: none;
    transition: all 0.2s;
}

.logout-btn:hover {
    background: rgba(239,68,68,0.2);
    color: #fca5a5;
}

/* 主内容区 */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.top-bar {
    position: sticky;
    top: 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    height: 64px;
    background: var(--bg-color);
    border-bottom: 1px solid var(--border-color);
    z-index: 50;
}

.menu-toggle {
    display: none;
    padding: 8px;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-color);
}

.top-bar-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--text-light);
}

.content-wrapper {
    flex: 1;
    padding: 24px;
}

/* 页面头部 */
.page-header {
    margin-bottom: 24px;
}

.page-header h1 {
    font-size: 24px;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 4px;
}

.page-header p {
    color: var(--text-light);
    font-size: 14px;
}

/* 卡片 */
.card {
    background: var(--bg-color);
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
    margin-bottom: 24px;
}

.card-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
}

.card-header h3 {
    font-size: 16px;
    font-weight: 600;
}

.card-body {
    padding: 20px;
}

/* 表单样式 */
.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-color);
    margin-bottom: 6px;
}

.form-control {
    width: 100%;
    padding: 10px 12px;
    font-size: 14px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    background: var(--bg-color);
    color: var(--text-color);
    transition: all 0.2s;
}

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

.form-control-color {
    height: 42px;
    padding: 4px;
    cursor: pointer;
}

textarea.form-control {
    resize: vertical;
    min-height: 100px;
}

select.form-control {
    cursor: pointer;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form-actions {
    display: flex;
    gap: 12px;
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

.required {
    color: var(--danger-color);
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    padding-top: 28px;
}

.checkbox-label input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
}

.file-upload {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.current-image {
    padding: 12px;
    background: var(--bg-light);
    border-radius: var(--radius);
    display: inline-block;
}

small {
    font-size: 12px;
    color: var(--text-muted);
}

/* 按钮 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 10px 16px;
    font-size: 14px;
    font-weight: 500;
    border-radius: var(--radius);
    border: none;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.2s;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-color);
}

.btn-outline:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

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

.btn-danger:hover {
    background: #dc2626;
}

.btn-sm {
    padding: 6px 12px;
    font-size: 13px;
}

.btn-block {
    width: 100%;
}

/* 提示框 */
.alert {
    padding: 12px 16px;
    border-radius: var(--radius);
    margin-bottom: 20px;
    font-size: 14px;
}

.alert-success {
    background: #d1fae5;
    color: #065f46;
    border: 1px solid #a7f3d0;
}

.alert-error {
    background: #fee2e2;
    color: #991b1b;
    border: 1px solid #fecaca;
}

/* 表格 */
.table-responsive {
    overflow-x: auto;
}

.table {
    width: 100%;
    border-collapse: collapse;
}

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

.table th {
    font-weight: 600;
    font-size: 13px;
    color: var(--text-light);
    background: var(--bg-light);
}

.table td {
    font-size: 14px;
}

.table code {
    padding: 2px 6px;
    background: var(--bg-light);
    border-radius: 4px;
    font-size: 13px;
}

/* 徽章 */
.badge {
    display: inline-block;
    padding: 4px 8px;
    font-size: 12px;
    font-weight: 500;
    border-radius: 4px;
}

.badge-success {
    background: #d1fae5;
    color: #065f46;
}

.badge-secondary {
    background: var(--bg-light);
    color: var(--text-light);
}

/* 图标预览 */
.icon-preview {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 6px;
    color: white;
    font-size: 14px;
    font-weight: 600;
}

/* 统计卡片 */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 16px;
}

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
}

.stat-info h3 {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-color);
}

.stat-info p {
    font-size: 14px;
    color: var(--text-light);
}

/* 快捷操作 */
.quick-actions h2 {
    font-size: 18px;
    margin-bottom: 16px;
}

.actions-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}

.action-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    padding: 24px;
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    text-decoration: none;
    color: var(--text-color);
    transition: all 0.2s;
}

.action-card:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow);
}

.action-card svg {
    color: var(--primary-color);
}

/* 内容网格 */
.content-grid {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 24px;
}

/* 图片网格 */
.images-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 16px;
}

.image-item {
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    overflow: hidden;
}

.image-preview {
    height: 150px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-light);
}

.image-preview img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

.image-info {
    padding: 12px;
    border-top: 1px solid var(--border-color);
}

.image-name {
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 4px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.image-size {
    font-size: 12px;
    color: var(--text-muted);
}

.image-actions {
    padding: 12px;
    border-top: 1px solid var(--border-color);
    display: flex;
    gap: 8px;
}

.empty-message {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-muted);
}

/* 响应式 */
@media (max-width: 1200px) {
    .stats-grid,
    .actions-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .content-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }
    
    .sidebar.active {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .menu-toggle {
        display: block;
    }
    
    .stats-grid,
    .actions-grid {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
}

/* 设置表单 */
.settings-form .card {
    margin-bottom: 24px;
}