/* ===================================
   后台管理样式
   =================================== */

/* 后台登录页 */
.admin-login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.admin-login-container {
    width: 100%;
    max-width: 400px;
    padding: var(--spacing-lg);
}

.admin-login-card {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.admin-login-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.admin-logo-icon {
    font-size: 3rem;
    display: block;
    margin-bottom: var(--spacing-md);
}

.admin-login-header h1 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
}

.admin-login-header p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.admin-login-btn {
    width: 100%;
    padding: var(--spacing-md);
    font-size: 1rem;
    margin-top: var(--spacing-md);
}

.admin-login-footer {
    text-align: center;
    margin-top: var(--spacing-xl);
}

.admin-login-footer a {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

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

/* 侧边栏 */
.admin-sidebar {
    width: 260px;
    background: var(--bg-secondary);
    border-right: 1px solid rgba(255, 255, 255, 0.05);
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    overflow-y: auto;
    z-index: 100;
    transition: transform 0.3s ease;
}

.admin-sidebar-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.admin-sidebar-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
}

.admin-sidebar-logo span:first-child {
    font-size: 1.5rem;
}

.admin-nav {
    padding: var(--spacing-md) 0;
}

.admin-nav-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
    color: var(--text-secondary);
    text-decoration: none;
    transition: all var(--transition-fast);
    border-left: 3px solid transparent;
}

.admin-nav-item:hover {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
}

.admin-nav-item.active {
    background: rgba(var(--accent-primary-rgb, 0, 240, 255), 0.1);
    color: var(--accent-primary);
    border-left-color: var(--accent-primary);
}

.admin-nav-item svg {
    width: 20px;
    height: 20px;
}

.admin-nav-divider {
    height: 1px;
    background: rgba(255, 255, 255, 0.05);
    margin: var(--spacing-md) 0;
}

/* 主内容区 */
.admin-main {
    flex: 1;
    margin-left: 260px;
    min-height: 100vh;
}

.admin-header {
    background: var(--bg-secondary);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    padding: var(--spacing-md) var(--spacing-xl);
    position: sticky;
    top: 0;
    z-index: 50;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.admin-header-title {
    font-size: 1.3rem;
    font-weight: 600;
}

.admin-header-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.admin-user-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-md);
    cursor: pointer;
}

.admin-user-avatar {
    width: 32px;
    height: 32px;
    background: var(--accent-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
}

.admin-content {
    padding: var(--spacing-xl);
}

/* 统计卡片 */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.stat-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.stat-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-md);
}

.stat-card-icon {
    width: 48px;
    height: 48px;
    background: var(--accent-gradient);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.stat-card-value {
    font-size: 2rem;
    font-weight: 700;
    font-family: var(--font-mono);
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.stat-card-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.stat-card-change {
    font-size: 0.8rem;
    padding: 2px 8px;
    border-radius: 4px;
}

.stat-card-change.up {
    background: rgba(34, 197, 94, 0.2);
    color: #22c55e;
}

.stat-card-change.down {
    background: rgba(239, 68, 68, 0.2);
    color: #ef4444;
}

/* 表格面板 */
.admin-panel {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.05);
    overflow: hidden;
}

.admin-panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.admin-panel-title {
    font-size: 1.1rem;
    font-weight: 600;
}

.admin-panel-actions {
    display: flex;
    gap: var(--spacing-sm);
}

.admin-table {
    width: 100%;
}

.admin-table th {
    background: transparent;
    font-weight: 600;
    color: var(--text-secondary);
    text-align: left;
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.admin-table td {
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid rgba(255, 255, 255, 0.03);
}

.admin-table tr:hover {
    background: rgba(255, 255, 255, 0.02);
}

.admin-table .actions {
    display: flex;
    gap: var(--spacing-sm);
}

.admin-table .btn-icon {
    width: 32px;
    height: 32px;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
}

/* 表单 */
.admin-form {
    max-width: 600px;
}

.admin-form .form-group {
    margin-bottom: var(--spacing-lg);
}

.admin-form .form-label {
    display: block;
    margin-bottom: var(--spacing-sm);
    color: var(--text-secondary);
    font-weight: 500;
}

.admin-form .form-hint {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-top: var(--spacing-xs);
}

/* 开关 */
.switch {
    position: relative;
    width: 48px;
    height: 24px;
}

.switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.switch-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 24px;
    transition: all var(--transition-fast);
}

.switch-slider:before {
    content: '';
    position: absolute;
    height: 18px;
    width: 18px;
    left: 3px;
    bottom: 3px;
    background: white;
    border-radius: 50%;
    transition: all var(--transition-fast);
}

.switch input:checked+.switch-slider {
    background: var(--accent-primary);
}

.switch input:checked+.switch-slider:before {
    transform: translateX(24px);
}

/* 文件上传 */
.file-upload {
    border: 2px dashed rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-lg);
    padding: var(--spacing-2xl);
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.file-upload:hover {
    border-color: var(--accent-primary);
    background: rgba(var(--accent-primary-rgb, 0, 240, 255), 0.05);
}

.file-upload-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.file-upload input[type="file"] {
    display: none;
}

/* 响应式 */
@media (max-width: 1024px) {
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .admin-sidebar {
        transform: translateX(-100%);
    }

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

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

    .stats-grid {
        grid-template-columns: 1fr;
    }

    .admin-header {
        padding: var(--spacing-md);
    }

    .admin-content {
        padding: var(--spacing-md);
    }
}

/* 模态框 */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-fast);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    transform: scale(0.9);
    transition: all var(--transition-fast);
}

.modal-overlay.active .modal {
    transform: scale(1);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.modal-title {
    font-size: 1.2rem;
    font-weight: 600;
}

.modal-close {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border: none;
    border-radius: 50%;
    color: var(--text-primary);
    cursor: pointer;
    font-size: 1.2rem;
}

.modal-body {
    padding: var(--spacing-lg);
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-sm);
    padding: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

/* Toast通知 */
.toast-container {
    position: fixed;
    top: var(--spacing-lg);
    right: var(--spacing-lg);
    z-index: 2000;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.toast {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    padding: var(--spacing-md) var(--spacing-lg);
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    animation: slideIn 0.3s ease;
}

.toast.success {
    border-left: 3px solid #22c55e;
}

.toast.error {
    border-left: 3px solid #ef4444;
}

.toast.warning {
    border-left: 3px solid #f59e0b;
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }

    to {
        transform: translateX(0);
        opacity: 1;
    }
}