/* ============================================================================
   KLIKZO ADMIN PANEL - PREMIUM THEME
   Shared CSS für alle Admin-Seiten mit Premium SaaS Design-System
   ============================================================================ */

/* CSS Variables */
:root {
    --accent: #818cf8;
    --accent-soft: rgba(129, 140, 248, 0.1);
    --accent-glow: rgba(129, 140, 248, 0.25);
    --primary-bg: #0f1420;
    --secondary-bg: #161d2f;
    --card-bg: #1e2640;
    --border: rgba(255, 255, 255, 0.08);
    --border-light: rgba(255, 255, 255, 0.04);
    --text-primary: #e2e8f0;
    --text-secondary: #cbd5e1;
    --text-muted: rgba(255, 255, 255, 0.5);
    --text-hover: #ffffff;
    --radius-md: 10px;
    --radius-lg: 14px;
    --radius-xl: 20px;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.12);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.2);
    --transition: all 0.2s ease;
}

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

html, body {
    font-family: 'Plus Jakarta Sans', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--primary-bg);
    color: var(--text-primary);
    line-height: 1.6;
}

body {
    min-height: 100vh;
    padding: 40px 20px;
}

/* Container */
.container, .admin-container {
    max-width: 1600px;
    margin: 0 auto;
}

/* Headings */
h1 {
    font-size: 42px;
    font-weight: 800;
    color: var(--text-hover);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    margin-bottom: 10px;
}

h2 {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
}

h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
}

h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

h5 {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 6px;
}

p {
    color: var(--text-muted);
    font-size: 14px;
    margin: 0;
}

/* Premium Section Header */
.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border);
}

.section-header h2 {
    margin: 0;
    display: flex;
    align-items: center;
    gap: 8px;
    flex: 1;
}

.section-header p {
    font-size: 13px;
    color: var(--text-muted);
    margin-top: 4px;
}

.section-header-actions {
    display: flex;
    gap: 8px;
    align-items: center;
    flex-wrap: wrap;
}

/* Cards & Sections */
.card, .section {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    padding: 24px;
    margin-bottom: 24px;
    transition: var(--transition);
}

.card:hover, .section:hover {
    border-color: rgba(255, 255, 255, 0.12);
    box-shadow: 0 8px 24px rgba(129, 140, 248, 0.08);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-light);
}

.card-header h3 {
    margin: 0;
}

.card-body {
    margin-top: 0;
}

/* Dashboard Grid */
.dashboard, .stats-grid, .metric-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.dashboard.cols-4,
.stats-grid.cols-4 {
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

/* Metric Cards */
.metric-card, .stat-card {
    background: var(--secondary-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 20px;
    transition: var(--transition);
}

.metric-card:hover, .stat-card:hover {
    border-color: var(--accent);
    box-shadow: 0 0 24px var(--accent-glow);
}

.metric-label, .stat-label {
    font-size: 12px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 8px;
    font-weight: 600;
}

.metric-value, .stat-value {
    font-size: 32px;
    font-weight: 800;
    color: var(--accent);
    margin-bottom: 8px;
}

.metric-change, .stat-change {
    font-size: 12px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 4px;
}

.metric-change.up, .stat-change.up {
    color: #10b981;
}

.metric-change.down, .stat-change.down {
    color: #ef4444;
}

.metric-change.neutral, .stat-change.neutral {
    color: var(--text-muted);
}

/* Buttons */
.btn {
    padding: 10px 18px;
    border: none;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 14px;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent), #7c3aed);
    color: white;
    border: 1px solid transparent;
}

.btn-primary:hover {
    box-shadow: 0 0 24px var(--accent-glow);
    transform: translateY(-2px);
}

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

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

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

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

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

.btn-lg {
    padding: 14px 28px;
    font-size: 16px;
}

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

/* Forms */
.form-group {
    margin-bottom: 16px;
}

.form-label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.form-label.required::after {
    content: ' *';
    color: #ef4444;
}

.form-control, .form-input, .form-select, .form-textarea {
    width: 100%;
    padding: 10px 12px;
    background: var(--secondary-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 14px;
    transition: var(--transition);
    font-family: inherit;
}

.form-control:focus, .form-input:focus, .form-select:focus, .form-textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 12px var(--accent-glow);
}

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

.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 16px;
}

.form-grid.two-col {
    grid-template-columns: repeat(2, 1fr);
}

.form-grid.three-col {
    grid-template-columns: repeat(3, 1fr);
}

/* Tables */
table, .data-table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 16px;
}

.data-table {
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.data-table thead {
    background: var(--secondary-bg);
    border-bottom: 2px solid var(--border);
}

.data-table thead th {
    padding: 12px 14px;
    text-align: left;
    font-weight: 600;
    font-size: 13px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.data-table tbody tr {
    border-bottom: 1px solid var(--border-light);
    transition: var(--transition);
}

.data-table tbody tr:hover {
    background: rgba(129, 140, 248, 0.05);
}

.data-table tbody td {
    padding: 12px 14px;
    font-size: 14px;
    color: var(--text-secondary);
}

.data-table tbody tr:last-child {
    border-bottom: none;
}

/* Tabs */
.tabs, .tab-navigation {
    display: flex;
    gap: 8px;
    margin-bottom: 20px;
    border-bottom: 1px solid var(--border);
    flex-wrap: wrap;
}

.tab-btn, .tab, .nav-tab {
    padding: 10px 16px;
    background: transparent;
    border: none;
    border-bottom: 2px solid transparent;
    color: var(--text-secondary);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    font-size: 14px;
}

.tab-btn:hover, .tab:hover, .nav-tab:hover {
    color: var(--text-primary);
}

.tab-btn.active, .tab.active, .nav-tab.active {
    color: var(--accent);
    border-bottom-color: var(--accent);
}

.tab-content, .tab-pane {
    display: none;
}

.tab-content.active, .tab-pane.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(4px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Badges & Status */
.badge {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    margin-right: 4px;
}

.badge-primary {
    background: var(--accent-soft);
    color: var(--accent);
}

.badge-success {
    background: rgba(16, 185, 129, 0.1);
    color: #10b981;
}

.badge-danger {
    background: rgba(239, 68, 68, 0.1);
    color: #ef4444;
}

.badge-warning {
    background: rgba(245, 158, 11, 0.1);
    color: #f59e0b;
}

.badge-info {
    background: rgba(59, 130, 246, 0.1);
    color: #3b82f6;
}

/* Alerts */
.alert {
    padding: 14px 16px;
    border-radius: var(--radius-md);
    border: 1px solid;
    margin-bottom: 16px;
    font-size: 14px;
}

.alert-info {
    background: rgba(59, 130, 246, 0.08);
    border-color: rgba(59, 130, 246, 0.3);
    color: #3b82f6;
}

.alert-success {
    background: rgba(16, 185, 129, 0.08);
    border-color: rgba(16, 185, 129, 0.3);
    color: #10b981;
}

.alert-warning {
    background: rgba(245, 158, 11, 0.08);
    border-color: rgba(245, 158, 11, 0.3);
    color: #f59e0b;
}

.alert-error, .alert-danger {
    background: rgba(239, 68, 68, 0.08);
    border-color: rgba(239, 68, 68, 0.3);
    color: #ef4444;
}

/* Loading & Spinner */
.loading, .spinner {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

.skeleton {
    background: linear-gradient(
        90deg,
        var(--secondary-bg),
        var(--card-bg),
        var(--secondary-bg)
    );
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
    0% {
        background-position: -200% 0;
    }
    100% {
        background-position: 200% 0;
    }
}

/* Utility Classes */
.flex {
    display: flex;
}

.flex-col {
    flex-direction: column;
}

.flex-between {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.flex-center {
    display: flex;
    justify-content: center;
    align-items: center;
}

.gap-sm {
    gap: 8px;
}

.gap-md {
    gap: 16px;
}

.gap-lg {
    gap: 24px;
}

.mt-sm {
    margin-top: 8px;
}

.mt-md {
    margin-top: 16px;
}

.mt-lg {
    margin-top: 24px;
}

.mb-sm {
    margin-bottom: 8px;
}

.mb-md {
    margin-bottom: 16px;
}

.mb-lg {
    margin-bottom: 24px;
}

.p-sm {
    padding: 8px;
}

.p-md {
    padding: 16px;
}

.p-lg {
    padding: 24px;
}

.text-center {
    text-align: center;
}

.text-right {
    text-align: right;
}

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

.text-secondary {
    color: var(--text-secondary);
}

.opacity-50 {
    opacity: 0.5;
}

.opacity-75 {
    opacity: 0.75;
}

.cursor-pointer {
    cursor: pointer;
}

/* Compatibility layer for legacy admin pages */
body {
    background: var(--primary-bg) !important;
    color: var(--text-primary) !important;
}

.container,
.container-fluid,
.dashboard,
.admin-wrap {
    position: relative;
    z-index: 1;
}

.card,
.section,
.metric-card,
.stat-card,
.panel,
.widget,
.module,
.table-wrap,
.chart-container,
.chart-wrapper {
    background: var(--card-bg) !important;
    border: 1px solid var(--border) !important;
    border-radius: var(--radius-lg) !important;
    box-shadow: var(--shadow-sm) !important;
}

.btn,
button,
input[type="button"],
input[type="submit"] {
    border-radius: var(--radius-md) !important;
}

table thead th,
.table thead th,
.data-table thead th {
    background: var(--secondary-bg) !important;
    color: var(--text-muted) !important;
}

table tbody td,
.table tbody td,
.data-table tbody td {
    color: var(--text-secondary) !important;
}

/* Bootstrap bridge */
.nav-tabs {
    border-bottom: 1px solid var(--border) !important;
}

.nav-tabs .nav-link {
    color: var(--text-secondary) !important;
    border: none !important;
    border-bottom: 2px solid transparent !important;
    background: transparent !important;
}

.nav-tabs .nav-link.active {
    color: var(--accent) !important;
    border-bottom-color: var(--accent) !important;
    background: transparent !important;
}

.form-control,
.form-select {
    background: var(--secondary-bg) !important;
    border: 1px solid var(--border) !important;
    color: var(--text-primary) !important;
}

.form-control:focus,
.form-select:focus {
    border-color: var(--accent) !important;
    box-shadow: 0 0 0 3px var(--accent-soft) !important;
}

.badge {
    border-radius: 999px !important;
}

/* Universal premium header ribbon for all admin pages */
body.admin-premium {
    padding-top: 72px !important;
}

body.admin-premium::before {
    content: '';
    position: fixed;
    left: 0;
    top: 0;
    width: 100%;
    height: 64px;
    z-index: 9998;
    pointer-events: none;
    background: linear-gradient(90deg, rgba(15, 23, 42, 0.92), rgba(30, 41, 59, 0.86));
    border-bottom: 1px solid rgba(255, 255, 255, 0.12);
    backdrop-filter: blur(10px);
}

body.admin-premium::after {
    content: 'KLIKZO ADMIN';
    position: fixed;
    left: 18px;
    top: 18px;
    z-index: 9999;
    font-size: 11px;
    letter-spacing: 1.2px;
    font-weight: 800;
    color: #e5efff;
    border: 1px solid rgba(148, 163, 184, 0.45);
    border-radius: 999px;
    padding: 5px 10px;
    background: rgba(15, 23, 42, 0.45);
    pointer-events: none;
}

/* Per-page visual identities */
body.admin-ab-test-manager::before,
body.admin-ad-manager::before {
    background: linear-gradient(90deg, rgba(67, 20, 7, 0.9), rgba(120, 53, 15, 0.8));
}

body.admin-analytics-dashboard::before,
body.admin-realtime-dashboard::before,
body.admin-event-monitor::before {
    background: linear-gradient(90deg, rgba(6, 78, 59, 0.88), rgba(14, 116, 144, 0.82));
}

body.admin-provider-manager::before,
body.admin-plugins::before,
body.admin-plugin-manager::before,
body.admin-theme-manager::before {
    background: linear-gradient(90deg, rgba(30, 41, 59, 0.9), rgba(30, 64, 175, 0.78));
}

body.admin-security-dashboard::before,
body.admin-fraud-monitor::before,
body.admin-opcache-status::before,
body.admin-infrastructure::before,
body.admin-cache-manager::before {
    background: linear-gradient(90deg, rgba(69, 10, 10, 0.88), rgba(30, 58, 138, 0.8));
}

body.admin-email-manager::before,
body.admin-wallet-manager::before,
body.admin-marketplace::before,
body.admin-ads-system::before,
body.admin-adsense-config::before,
body.admin-user-manager::before {
    background: linear-gradient(90deg, rgba(2, 6, 23, 0.9), rgba(55, 48, 163, 0.8));
}

body.admin-ab-test-manager::after { content: 'A/B EXPERIMENT LAB'; }
body.admin-ad-manager::after { content: 'REVENUE COMMAND CENTER'; }
body.admin-ads-system::after { content: 'ADS DELIVERY STUDIO'; }
body.admin-adsense-config::after { content: 'ADSENSE CONFIGURATION'; }
body.admin-analytics-dashboard::after { content: 'ANALYTICS MISSION CONTROL'; }
body.admin-cache-manager::after { content: 'CACHE OPERATIONS'; }
body.admin-email-manager::after { content: 'EMAIL OPS CENTER'; }
body.admin-event-monitor::after { content: 'EVENT OPERATIONS'; }
body.admin-fraud-monitor::after { content: 'FRAUD DETECTION GRID'; }
body.admin-infrastructure::after { content: 'INFRASTRUCTURE STATUS'; }
body.admin-marketplace::after { content: 'MARKETPLACE ENGINE'; }
body.admin-opcache-status::after { content: 'OPCACHE INSPECTOR'; }
body.admin-plugin-manager::after { content: 'PLUGIN CONTROL ROOM'; }
body.admin-plugins::after { content: 'PLUGIN MARKET HUB'; }
body.admin-provider-manager::after { content: 'PROVIDER ORCHESTRATOR'; }
body.admin-realtime-dashboard::after { content: 'REALTIME STREAM CENTER'; }
body.admin-security-dashboard::after { content: 'SECURITY OPERATIONS CENTER'; }
body.admin-theme-manager::after { content: 'THEME DESIGN STUDIO'; }
body.admin-user-manager::after { content: 'USER GOVERNANCE DESK'; }
body.admin-wallet-manager::after { content: 'WALLET & XP OPERATIONS'; }

/* Keep own topbar pages clean */
body.admin-provider-manager::before,
body.admin-provider-manager::after {
    display: none;
}

/* legacy containers should not hide below fixed ribbon */
body.admin-premium .container,
body.admin-premium .container-fluid,
body.admin-premium .dashboard,
body.admin-premium .app-shell {
    position: relative;
}

/* Responsive */
@media (max-width: 768px) {
    body {
        padding: 20px 16px;
    }

    .container, .admin-container {
        padding: 0;
    }

    h1 {
        font-size: 28px;
    }

    h2 {
        font-size: 22px;
    }

    .section-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }

    .section-header-actions {
        width: 100%;
    }

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

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

    .form-grid.two-col, .form-grid.three-col {
        grid-template-columns: 1fr;
    }

    .tabs {
        gap: 4px;
    }

    .tab-btn, .tab {
        padding: 8px 12px;
        font-size: 13px;
    }

    table {
        font-size: 12px;
    }

    table th, table td {
        padding: 8px 10px;
    }

    .card, .section {
        padding: 16px;
    }
}

/* Print Styles */
@media print {
    body {
        background: white;
        color: black;
    }

    .btn, .section-header-actions {
        display: none;
    }

    .card, .section {
        box-shadow: none;
        page-break-inside: avoid;
    }
}