/* admin-frontend/css/admin.css - 管理后台样式 */

:root {
    --primary-color: #FF2442;
    --primary-dark: #E01F3A;
    --secondary-color: #FF6B6B;
    --success-color: #52c41a;
    --warning-color: #faad14;
    --error-color: #f5222d;
    --text-primary: #333;
    --text-secondary: #666;
    --text-tertiary: #999;
    --border-color: #e8e8e8;
    --bg-gray: #f5f5f5;
    --bg-white: #ffffff;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.15);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    font-size: 14px;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-gray);
}

/* ========== 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(--secondary-color) 100%);
}

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

.login-card {
    background: var(--bg-white);
    border-radius: 16px;
    padding: 40px;
    box-shadow: var(--shadow-lg);
}

.login-header {
    text-align: center;
    margin-bottom: 32px;
}

.login-header h1 {
    font-size: 28px;
    font-weight: bold;
    color: var(--text-primary);
    margin-bottom: 8px;
}

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

.login-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
}

.form-group input[type="text"],
.form-group input[type="password"],
.form-group input[type="email"],
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 14px;
    transition: all 0.3s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(255, 36, 66, 0.1);
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    user-select: none;
}

.checkbox-label input[type="checkbox"] {
    width: 16px;
    height: 16px;
    cursor: pointer;
}

.btn {
    padding: 10px 20px;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
}

.btn-primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-block {
    width: 100%;
}

.error-message {
    padding: 12px;
    background: #fff2f0;
    border: 1px solid #ffccc7;
    border-radius: 8px;
    color: var(--error-color);
    font-size: 14px;
}

.login-footer {
    text-align: center;
    margin-top: 24px;
    color: rgba(255, 255, 255, 0.8);
    font-size: 12px;
}

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

.sidebar {
    width: 240px;
    background: #001529;
    color: white;
    display: flex;
    flex-direction: column;
}

.sidebar-header {
    padding: 24px 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.sidebar-header h1 {
    font-size: 18px;
    font-weight: bold;
}

.sidebar-header p {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.6);
    margin-top: 4px;
}

.sidebar-menu {
    flex: 1;
    padding: 20px 0;
}

.menu-item {
    padding: 12px 20px;
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 12px;
    transition: all 0.3s;
}

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

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

.menu-item-icon {
    font-size: 18px;
}

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

.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    background: var(--bg-gray);
}

.topbar {
    height: 64px;
    background: var(--bg-white);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
}

.topbar-left {
    display: flex;
    align-items: center;
    gap: 16px;
}

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

.user-info {
    display: flex;
    align-items: center;
    gap: 8px;
}

.user-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--primary-color);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
}

.content-area {
    flex: 1;
    padding: 24px;
    overflow-y: auto;
}

.page-header {
    margin-bottom: 24px;
}

.page-title {
    font-size: 24px;
    font-weight: bold;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.page-description {
    font-size: 14px;
    color: var(--text-secondary);
}

/* ========== 卡片 ========== */
.card {
    background: var(--bg-white);
    border-radius: 12px;
    padding: 24px;
    box-shadow: var(--shadow-sm);
    margin-bottom: 24px;
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
}

.card-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
}

/* ========== 统计卡片 ========== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
    margin-bottom: 24px;
}

.stat-card {
    background: var(--bg-white);
    border-radius: 12px;
    padding: 24px;
    box-shadow: var(--shadow-sm);
    display: flex;
    align-items: center;
    gap: 16px;
}

.stat-icon {
    width: 56px;
    height: 56px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
}

.stat-icon.primary {
    background: rgba(255, 36, 66, 0.1);
    color: var(--primary-color);
}

.stat-icon.success {
    background: rgba(82, 196, 26, 0.1);
    color: var(--success-color);
}

.stat-icon.warning {
    background: rgba(250, 173, 20, 0.1);
    color: var(--warning-color);
}

.stat-content {
    flex: 1;
}

.stat-label {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.stat-value {
    font-size: 28px;
    font-weight: bold;
    color: var(--text-primary);
}

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

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

thead {
    background: var(--bg-gray);
}

th {
    padding: 12px 16px;
    text-align: left;
    font-weight: 600;
    color: var(--text-primary);
    font-size: 14px;
}

td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-color);
    font-size: 14px;
}

tr:hover {
    background: var(--bg-gray);
}

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

.badge-success {
    background: #f6ffed;
    color: var(--success-color);
    border: 1px solid #b7eb8f;
}

.badge-warning {
    background: #fffbe6;
    color: var(--warning-color);
    border: 1px solid #ffe58f;
}

.badge-error {
    background: #fff2f0;
    color: var(--error-color);
    border: 1px solid #ffccc7;
}

.badge-default {
    background: var(--bg-gray);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}

/* ========== 按钮组 ========== */
.btn-group {
    display: flex;
    gap: 8px;
}

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

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

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

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

/* ========== 分页 ========== */
.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-top: 24px;
}

.pagination button {
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    background: var(--bg-white);
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s;
}

.pagination button:hover:not(:disabled) {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.pagination button.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.pagination button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* ========== 响应式 ========== */
@media (max-width: 768px) {
    .sidebar {
        position: fixed;
        left: -240px;
        height: 100vh;
        z-index: 1000;
        transition: left 0.3s;
    }
    
    .sidebar.open {
        left: 0;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
}