/* ===== Admin Dashboard CSS ===== */
/* 复用主站 CSS 变量 */

:root {
    --primary: #9B59B6;
    --primary-dark: #7D3C98;
    --primary-light: #BB8FCE;
    --secondary: #C9A86C;
    --accent-cyan: #00D9C4;
    --accent-pink: #FF6B9D;
    --accent-purple: #8B5CF6;
    
    --bg-dark: #0D0D1A;
    --bg-darker: #080810;
    --bg-card: rgba(255, 255, 255, 0.03);
    --bg-card-hover: rgba(255, 255, 255, 0.06);
    
    --text-primary: #FFFFFF;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --text-muted: rgba(255, 255, 255, 0.5);
    
    --border: rgba(255, 255, 255, 0.1);
    --border-focus: rgba(155, 89, 182, 0.5);
    
    --success: #10B981;
    --warning: #F59E0B;
    --error: #EF4444;
    --info: #3B82F6;
    
    --gradient-primary: linear-gradient(135deg, #9B59B6 0%, #C9A86C 50%, #00D9C4 100%);
    
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.5);
    
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    
    --transition: 0.3s ease;
    --transition-fast: 0.15s ease;
    
    --sidebar-width: 260px;
    --header-height: 64px;
    
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

/* ===== Reset ===== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    font-size: 14px;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-dark);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

input, select, textarea {
    font-family: inherit;
    font-size: inherit;
}

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

/* ===== Sidebar ===== */
.sidebar {
    width: var(--sidebar-width);
    background: var(--bg-darker);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    z-index: 100;
}

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

.sidebar-logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.sidebar-logo img {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
}

.sidebar-logo span {
    font-size: 18px;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.sidebar-nav {
    flex: 1;
    padding: 16px 12px;
    overflow-y: auto;
}

.nav-section {
    margin-bottom: 24px;
}

.nav-section-title {
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    padding: 0 12px;
    margin-bottom: 8px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    transition: var(--transition);
    margin-bottom: 4px;
}

.nav-item:hover {
    background: var(--bg-card-hover);
    color: var(--text-primary);
}

.nav-item.active {
    background: rgba(155, 89, 182, 0.15);
    color: var(--primary-light);
}

.nav-item svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.nav-item span {
    font-weight: 500;
}

.nav-badge {
    margin-left: auto;
    background: var(--error);
    color: white;
    font-size: 11px;
    font-weight: 600;
    padding: 2px 8px;
    border-radius: 10px;
}

.sidebar-footer {
    padding: 16px;
    border-top: 1px solid var(--border);
}

.user-info {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    border-radius: var(--radius-md);
    background: var(--bg-card);
}

.user-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 14px;
}

.user-details {
    flex: 1;
    min-width: 0;
}

.user-name {
    font-weight: 600;
    font-size: 13px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.user-role {
    font-size: 11px;
    color: var(--text-muted);
}

/* ===== Main Content ===== */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    min-height: 100vh;
}

.main-header {
    height: var(--header-height);
    padding: 0 32px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--border);
    background: var(--bg-darker);
    position: sticky;
    top: 0;
    z-index: 50;
}

.page-title {
    font-size: 20px;
    font-weight: 700;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.main-body {
    padding: 32px;
}

/* ===== Cards ===== */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 24px;
}

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

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

.card-subtitle {
    font-size: 13px;
    color: var(--text-muted);
    margin-top: 4px;
}

/* ===== Stats Cards ===== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
    margin-bottom: 32px;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 24px;
    transition: var(--transition);
}

.stat-card:hover {
    border-color: var(--primary);
    transform: translateY(-2px);
}

.stat-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
}

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

.stat-icon.users { background: rgba(59, 130, 246, 0.15); color: var(--info); }
.stat-icon.messages { background: rgba(16, 185, 129, 0.15); color: var(--success); }
.stat-icon.reports { background: rgba(239, 68, 68, 0.15); color: var(--error); }
.stat-icon.packs { background: rgba(155, 89, 182, 0.15); color: var(--primary); }

.stat-icon svg {
    width: 24px;
    height: 24px;
}

.stat-trend {
    font-size: 12px;
    font-weight: 600;
    padding: 4px 8px;
    border-radius: 6px;
}

.stat-trend.up {
    background: rgba(16, 185, 129, 0.15);
    color: var(--success);
}

.stat-trend.down {
    background: rgba(239, 68, 68, 0.15);
    color: var(--error);
}

.stat-value {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 4px;
}

.stat-label {
    font-size: 13px;
    color: var(--text-muted);
}

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

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

.data-table th,
.data-table td {
    padding: 14px 16px;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

.data-table th {
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    background: var(--bg-darker);
}

.data-table tbody tr {
    transition: var(--transition);
}

.data-table tbody tr:hover {
    background: var(--bg-card-hover);
}

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

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    font-size: 14px;
    font-weight: 600;
    border-radius: var(--radius-md);
    transition: var(--transition);
    cursor: pointer;
    border: none;
}

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

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

.btn-secondary {
    background: var(--bg-card);
    color: var(--text-primary);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    background: var(--bg-card-hover);
    border-color: var(--primary);
}

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

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

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

.btn-success:hover {
    background: #059669;
}

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

.btn-icon {
    width: 36px;
    height: 36px;
    padding: 0;
    border-radius: var(--radius-sm);
}

/* ===== Badges ===== */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 10px;
    font-size: 12px;
    font-weight: 600;
    border-radius: 20px;
}

.badge-success { background: rgba(16, 185, 129, 0.15); color: var(--success); }
.badge-warning { background: rgba(245, 158, 11, 0.15); color: var(--warning); }
.badge-danger { background: rgba(239, 68, 68, 0.15); color: var(--error); }
.badge-info { background: rgba(59, 130, 246, 0.15); color: var(--info); }
.badge-primary { background: rgba(155, 89, 182, 0.15); color: var(--primary-light); }
.badge-muted { background: var(--bg-card); color: var(--text-muted); }

/* ===== Forms ===== */
.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-secondary);
}

.form-input {
    width: 100%;
    padding: 12px 16px;
    font-size: 14px;
    color: var(--text-primary);
    background: var(--bg-darker);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    transition: var(--transition);
}

.form-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(155, 89, 182, 0.1);
}

.form-input::placeholder {
    color: var(--text-muted);
}

.form-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%23888' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    background-size: 16px;
    padding-right: 40px;
}

/* ===== Search Box ===== */
.search-box {
    position: relative;
    max-width: 320px;
}

.search-box svg {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    width: 18px;
    height: 18px;
    color: var(--text-muted);
}

.search-box input {
    padding-left: 44px;
}

/* ===== Filters ===== */
.filters {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 24px;
}

.filter-group {
    display: flex;
    align-items: center;
    gap: 8px;
}

.filter-label {
    font-size: 13px;
    color: var(--text-muted);
}

/* ===== Pagination ===== */
.pagination {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 20px;
    border-top: 1px solid var(--border);
    margin-top: 20px;
}

.pagination-info {
    font-size: 13px;
    color: var(--text-muted);
}

.pagination-buttons {
    display: flex;
    gap: 8px;
}

.pagination-btn {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-card);
    color: var(--text-secondary);
    transition: var(--transition);
}

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

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

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

/* ===== Modal ===== */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

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

.modal {
    background: var(--bg-darker);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    transform: scale(0.95);
    transition: var(--transition);
}

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

.modal-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-title {
    font-size: 18px;
    font-weight: 600;
}

.modal-close {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    color: var(--text-muted);
    transition: var(--transition);
}

.modal-close:hover {
    background: var(--bg-card);
    color: var(--text-primary);
}

.modal-body {
    padding: 24px;
}

.modal-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: flex-end;
    gap: 12px;
}

/* ===== User Avatar ===== */
.avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 14px;
    flex-shrink: 0;
}

.avatar img {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    object-fit: cover;
}

.avatar-sm {
    width: 32px;
    height: 32px;
    font-size: 12px;
}

.avatar-lg {
    width: 56px;
    height: 56px;
    font-size: 20px;
}

/* ===== User Cell ===== */
.user-cell {
    display: flex;
    align-items: center;
    gap: 12px;
}

.user-cell-info {
    min-width: 0;
}

.user-cell-name {
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

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

/* ===== Action Buttons ===== */
.action-buttons {
    display: flex;
    gap: 8px;
}

/* ===== Empty State ===== */
.empty-state {
    text-align: center;
    padding: 60px 20px;
}

.empty-state svg {
    width: 64px;
    height: 64px;
    color: var(--text-muted);
    margin-bottom: 16px;
}

.empty-state-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
}

.empty-state-desc {
    color: var(--text-muted);
    font-size: 14px;
}

/* ===== Loading ===== */
.loading {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px;
}

.spinner {
    width: 32px;
    height: 32px;
    border: 3px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ===== Toast Notifications ===== */
.toast-container {
    position: fixed;
    top: 24px;
    right: 24px;
    z-index: 2000;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.toast {
    background: var(--bg-darker);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 16px 20px;
    display: flex;
    align-items: center;
    gap: 12px;
    min-width: 300px;
    box-shadow: var(--shadow-lg);
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.toast-success { border-left: 4px solid var(--success); }
.toast-error { border-left: 4px solid var(--error); }
.toast-warning { border-left: 4px solid var(--warning); }
.toast-info { border-left: 4px solid var(--info); }

.toast-icon {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
}

.toast-success .toast-icon { color: var(--success); }
.toast-error .toast-icon { color: var(--error); }
.toast-warning .toast-icon { color: var(--warning); }
.toast-info .toast-icon { color: var(--info); }

.toast-message {
    flex: 1;
    font-size: 14px;
}

.toast-close {
    color: var(--text-muted);
    padding: 4px;
    transition: var(--transition);
}

.toast-close:hover {
    color: var(--text-primary);
}

/* ===== Login Page ===== */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    background: radial-gradient(ellipse at 50% 0%, rgba(155, 89, 182, 0.2) 0%, transparent 50%);
}

.login-card {
    width: 100%;
    max-width: 420px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 40px;
}

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

.login-logo {
    width: 64px;
    height: 64px;
    margin: 0 auto 16px;
}

.login-title {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 8px;
}

.login-subtitle {
    color: var(--text-muted);
    font-size: 14px;
}

.login-form .form-group:last-of-type {
    margin-bottom: 24px;
}

.login-btn {
    width: 100%;
    padding: 14px;
    font-size: 16px;
}

.login-error {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    border-radius: var(--radius-md);
    padding: 12px 16px;
    margin-bottom: 20px;
    color: var(--error);
    font-size: 14px;
    display: none;
}

.login-error.show {
    display: block;
}

/* ===== Chart Container ===== */
.chart-container {
    height: 300px;
    margin-top: 20px;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .sidebar {
        transform: translateX(-100%);
        transition: var(--transition);
    }
    
    .sidebar.open {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
}

@media (max-width: 768px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .filters {
        flex-direction: column;
        align-items: stretch;
    }
    
    .search-box {
        max-width: none;
    }
    
    .main-body {
        padding: 20px;
    }
    
    .main-header {
        padding: 0 20px;
    }
}

/* ===== Detail View ===== */
.detail-header {
    display: flex;
    align-items: flex-start;
    gap: 24px;
    margin-bottom: 32px;
}

.detail-info {
    flex: 1;
}

.detail-title {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 8px;
}

.detail-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    color: var(--text-muted);
    font-size: 13px;
}

.detail-meta-item {
    display: flex;
    align-items: center;
    gap: 6px;
}

.detail-actions {
    display: flex;
    gap: 12px;
}

.detail-section {
    margin-bottom: 32px;
}

.detail-section-title {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border);
}

.detail-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}

.detail-item {
    background: var(--bg-darker);
    padding: 16px;
    border-radius: var(--radius-md);
}

.detail-item-label {
    font-size: 12px;
    color: var(--text-muted);
    margin-bottom: 4px;
}

.detail-item-value {
    font-size: 15px;
    font-weight: 500;
}

/* ===== Message Preview ===== */
.message-preview {
    background: var(--bg-darker);
    border-radius: var(--radius-md);
    padding: 16px;
    margin-top: 12px;
}

.message-preview-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border);
}

.message-preview-content {
    font-size: 14px;
    line-height: 1.6;
    word-break: break-word;
}

/* ===== Confirm Dialog ===== */
.confirm-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 20px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.confirm-icon.warning {
    background: rgba(245, 158, 11, 0.15);
    color: var(--warning);
}

.confirm-icon.danger {
    background: rgba(239, 68, 68, 0.15);
    color: var(--error);
}

.confirm-icon svg {
    width: 32px;
    height: 32px;
}

.confirm-title {
    text-align: center;
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
}

.confirm-message {
    text-align: center;
    color: var(--text-muted);
    font-size: 14px;
    margin-bottom: 24px;
}

.confirm-actions {
    display: flex;
    gap: 12px;
}

.confirm-actions .btn {
    flex: 1;
}