/* ============================================================
   AppMetrics — Premium Dark Dashboard Theme
   ============================================================ */

/* --- CSS Custom Properties --- */
:root {
    --bg-deep: #0a0a0f;
    --bg-dark: #12121a;
    --bg-card: #1a1a2e;
    --bg-card-hover: #1e1e35;
    --glass: rgba(255,255,255,0.03);
    --glass-hover: rgba(255,255,255,0.05);
    --glass-border: rgba(255,255,255,0.06);
    --glass-border-hover: rgba(255,255,255,0.1);
    --primary: #6366f1;
    --primary-light: #818cf8;
    --primary-dim: rgba(99,102,241,0.15);
    --secondary: #8b5cf6;
    --secondary-dim: rgba(139,92,246,0.15);
    --success: #10b981;
    --success-dim: rgba(16,185,129,0.12);
    --warning: #f59e0b;
    --warning-dim: rgba(245,158,11,0.12);
    --error: #ef4444;
    --error-dim: rgba(239,68,68,0.12);
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-tertiary: #64748b;
    --sidebar-width: 260px;
    --header-height: 64px;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.2);
    --shadow-md: 0 8px 24px rgba(0,0,0,0.3);
    --shadow-lg: 0 20px 50px rgba(0,0,0,0.4);
    --transition-fast: 0.15s ease;
    --transition-base: 0.25s ease;
    --transition-slow: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

/* --- Premium Light Theme System Overrides --- */
@media (prefers-color-scheme: light) {
    :root {
        --bg-deep: #f8fafc;
        --bg-dark: #ffffff;
        --bg-card: #ffffff;
        --bg-card-hover: #f1f5f9;
        --glass: rgba(0,0,0,0.02);
        --glass-hover: rgba(0,0,0,0.04);
        --glass-border: rgba(0,0,0,0.08);
        --glass-border-hover: rgba(0,0,0,0.12);
        --primary: #4f46e5;
        --primary-light: #6366f1;
        --primary-dim: rgba(79,70,229,0.1);
        --secondary: #7c3aed;
        --secondary-dim: rgba(124,58,237,0.1);
        --success: #059669;
        --success-dim: rgba(5,150,105,0.1);
        --warning: #d97706;
        --warning-dim: rgba(217,119,6,0.1);
        --error: #dc2626;
        --error-dim: rgba(220,38,38,0.1);
        --text-primary: #0f172a;
        --text-secondary: #475569;
        --text-tertiary: #94a3b8;
        --shadow-sm: 0 2px 8px rgba(0,0,0,0.05);
        --shadow-md: 0 8px 24px rgba(0,0,0,0.08);
        --shadow-lg: 0 20px 50px rgba(0,0,0,0.12);
    }
    
    .sidebar {
        background: rgba(255, 255, 255, 0.95);
    }
    
    .top-header {
        background: rgba(248, 250, 252, 0.8);
    }
    
    tbody tr:nth-child(even) {
        background: rgba(0,0,0,0.015);
    }
    
    thead {
        background: rgba(0,0,0,0.01);
    }
    
    tbody tr:hover {
        background: rgba(79, 70, 229, 0.04);
    }
    
    ::-webkit-scrollbar-thumb {
        background: rgba(0,0,0,0.1);
    }
    
    ::-webkit-scrollbar-thumb:hover {
        background: rgba(0,0,0,0.2);
    }
    
    .form-select option {
        background: #ffffff;
        color: #0f172a;
    }
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg-deep);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
}

/* --- Scrollbar Styling --- */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}
::-webkit-scrollbar-track {
    background: transparent;
}
::-webkit-scrollbar-thumb {
    background: rgba(255,255,255,0.1);
    border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
    background: rgba(255,255,255,0.18);
}

/* --- Layout --- */
.main-wrapper {
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    transition: margin-left var(--transition-base);
}

/* --- Sidebar --- */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background: rgba(18,18,26,0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-right: 1px solid var(--glass-border);
    display: flex;
    flex-direction: column;
    z-index: 100;
    transition: transform var(--transition-slow);
}

.sidebar-header {
    padding: 24px 20px;
    border-bottom: 1px solid var(--glass-border);
}

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

.logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    box-shadow: 0 4px 12px rgba(99,102,241,0.3);
    flex-shrink: 0;
}

.logo-text {
    font-size: 18px;
    font-weight: 700;
    letter-spacing: -0.3px;
    background: linear-gradient(135deg, var(--text-primary), var(--primary-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.sidebar-nav {
    flex: 1;
    padding: 16px 12px;
    display: flex;
    flex-direction: column;
    gap: 4px;
    overflow-y: auto;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: all var(--transition-fast);
    position: relative;
}

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

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

.nav-item.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 20px;
    background: var(--primary);
    border-radius: 0 3px 3px 0;
}

.nav-icon {
    font-size: 18px;
    width: 24px;
    text-align: center;
    flex-shrink: 0;
}

.sidebar-footer {
    padding: 16px 20px;
    border-top: 1px solid var(--glass-border);
}

.sidebar-user {
    display: flex;
    align-items: center;
    gap: 10px;
}

.user-avatar {
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    font-weight: 600;
    flex-shrink: 0;
}

.user-name {
    font-size: 13px;
    color: var(--text-secondary);
    font-weight: 500;
}

/* --- Sidebar Overlay (Mobile) --- */
.sidebar-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 99;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    backdrop-filter: blur(4px);
}

.sidebar-overlay.visible {
    opacity: 1;
    visibility: visible;
}

/* --- Header --- */
.top-header {
    height: var(--header-height);
    padding: 0 28px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--glass-border);
    background: rgba(10,10,15,0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    position: sticky;
    top: 0;
    z-index: 50;
    flex-shrink: 0;
}

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

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.menu-toggle span {
    width: 20px;
    height: 2px;
    background: var(--text-secondary);
    border-radius: 1px;
    transition: all var(--transition-fast);
}

.page-title {
    font-size: 18px;
    font-weight: 600;
    letter-spacing: -0.3px;
}

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

/* --- Period Selector --- */
.period-selector {
    display: flex;
    background: var(--glass);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    padding: 3px;
    gap: 2px;
}

.period-btn {
    padding: 6px 14px;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    font-family: 'Inter', sans-serif;
    font-size: 12px;
    font-weight: 600;
    border-radius: 6px;
    cursor: pointer;
    transition: all var(--transition-fast);
    letter-spacing: 0.5px;
}

.period-btn:hover {
    color: var(--text-primary);
}

.period-btn.active {
    background: var(--primary);
    color: white;
    box-shadow: 0 2px 8px rgba(99,102,241,0.3);
}

/* --- Logout --- */
.logout-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: var(--glass);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-family: 'Inter', sans-serif;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.logout-btn:hover {
    background: var(--error-dim);
    border-color: rgba(239,68,68,0.2);
    color: var(--error);
}

.logout-icon {
    font-size: 14px;
    transition: transform var(--transition-fast);
}

.logout-btn:hover .logout-icon {
    transform: translateX(3px);
}

/* --- Content Area --- */
.content {
    flex: 1;
    padding: 28px;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

/* --- KPI Cards Grid --- */
.kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
    margin-bottom: 28px;
}

.kpi-card {
    background: var(--glass);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 24px;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.kpi-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    opacity: 0;
    transition: opacity var(--transition-base);
}

.kpi-card:hover {
    background: var(--glass-hover);
    border-color: var(--glass-border-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.kpi-card:hover::before {
    opacity: 1;
}

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

.kpi-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
}

.kpi-icon.indigo { background: var(--primary-dim); }
.kpi-icon.violet { background: var(--secondary-dim); }
.kpi-icon.green { background: var(--success-dim); }
.kpi-icon.amber { background: var(--warning-dim); }
.kpi-icon.red { background: var(--error-dim); }

.kpi-label {
    font-size: 13px;
    color: var(--text-secondary);
    font-weight: 500;
}

.kpi-value {
    font-size: 32px;
    font-weight: 700;
    letter-spacing: -1px;
    line-height: 1.2;
    background: linear-gradient(135deg, var(--text-primary), var(--text-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* --- Charts Section --- */
.charts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(460px, 1fr));
    gap: 20px;
    margin-bottom: 28px;
}

.chart-card {
    background: var(--glass);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 24px;
    transition: all var(--transition-base);
}

.chart-card:hover {
    border-color: var(--glass-border-hover);
}

.chart-card h3 {
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.chart-wrapper {
    position: relative;
    width: 100%;
    height: 280px;
}

.chart-wrapper canvas {
    width: 100% !important;
    height: 100% !important;
}

/* --- Section Headers --- */
.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
}

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

/* --- Tables --- */
.table-card {
    background: var(--glass);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    margin-bottom: 28px;
}

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

.table-card-header h3 {
    font-size: 15px;
    font-weight: 600;
}

.table-scroll {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
}

thead {
    background: rgba(255,255,255,0.02);
}

th {
    padding: 12px 20px;
    text-align: left;
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    white-space: nowrap;
    border-bottom: 1px solid var(--glass-border);
}

td {
    padding: 14px 20px;
    color: var(--text-primary);
    border-bottom: 1px solid var(--glass-border);
    white-space: nowrap;
}

tr:last-child td {
    border-bottom: none;
}

tbody tr {
    transition: background var(--transition-fast);
}

tbody tr:nth-child(even) {
    background: rgba(255,255,255,0.01);
}

tbody tr:hover {
    background: rgba(99,102,241,0.04);
}

/* --- Badges / Status Pills --- */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.3px;
}

.badge-success {
    background: var(--success-dim);
    color: var(--success);
}

.badge-error {
    background: var(--error-dim);
    color: var(--error);
}

.badge-warning {
    background: var(--warning-dim);
    color: var(--warning);
}

.badge-primary {
    background: var(--primary-dim);
    color: var(--primary-light);
}

.badge-secondary {
    background: var(--secondary-dim);
    color: var(--secondary);
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border: none;
    border-radius: var(--radius-sm);
    font-family: 'Inter', sans-serif;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    box-shadow: 0 2px 8px rgba(99,102,241,0.25);
}

.btn-primary:hover {
    box-shadow: 0 4px 16px rgba(99,102,241,0.4);
    transform: translateY(-1px);
}

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

.btn-ghost:hover {
    background: var(--glass-hover);
    color: var(--text-primary);
    border-color: var(--glass-border-hover);
}

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

.btn-danger:hover {
    background: rgba(239,68,68,0.2);
}

.btn-sm {
    padding: 6px 10px;
    font-size: 12px;
}

.btn-icon {
    width: 32px;
    height: 32px;
    padding: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    border: 1px solid var(--glass-border);
    background: var(--glass);
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 14px;
    transition: all var(--transition-fast);
}

.btn-icon:hover {
    background: var(--glass-hover);
    color: var(--text-primary);
}

/* --- Forms & Filters --- */
.filters-bar {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 20px;
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.filter-label {
    font-size: 11px;
    font-weight: 600;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.form-input, .form-select {
    padding: 10px 14px;
    background: var(--glass);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: 'Inter', sans-serif;
    font-size: 13px;
    outline: none;
    transition: all var(--transition-fast);
    min-width: 160px;
}

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

.form-input:focus, .form-select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99,102,241,0.1);
}

.form-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%2394a3b8' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10l-5 5z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 32px;
    cursor: pointer;
}

.form-select option {
    background: var(--bg-dark);
    color: var(--text-primary);
}

/* --- Modal --- */
.modal-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.6);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    z-index: 200;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    padding: 20px;
}

.modal-backdrop.visible {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: var(--bg-dark);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    width: 100%;
    max-width: 480px;
    box-shadow: var(--shadow-lg);
    transform: scale(0.95) translateY(10px);
    transition: transform var(--transition-slow);
}

.modal-backdrop.visible .modal {
    transform: scale(1) translateY(0);
}

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

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

.modal-close {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 20px;
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

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

.modal-body {
    padding: 24px;
}

.modal-body .form-group {
    margin-bottom: 16px;
}

.modal-body .form-group:last-of-type {
    margin-bottom: 0;
}

.modal-body .form-group label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 6px;
}

.modal-body .form-group input,
.modal-body .form-group select {
    width: 100%;
    padding: 12px 14px;
    background: var(--glass);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: 'Inter', sans-serif;
    font-size: 14px;
    outline: none;
    transition: all var(--transition-fast);
}

.modal-body .form-group input:focus,
.modal-body .form-group select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99,102,241,0.1);
}

.modal-body .form-group select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%2394a3b8' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10l-5 5z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 32px;
    cursor: pointer;
}

.modal-body .form-group select option {
    background: var(--bg-dark);
}

.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    margin-top: 24px;
}

/* --- Pagination --- */
.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-top: 20px;
}

.pagination-btn {
    padding: 8px 14px;
    background: var(--glass);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-family: 'Inter', sans-serif;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

.pagination-btn:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

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

.pagination-info {
    font-size: 13px;
    color: var(--text-secondary);
    padding: 0 8px;
}

/* --- API Key Display --- */
.api-key-display {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--glass);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    padding: 4px 6px 4px 12px;
    font-family: 'JetBrains Mono', 'SF Mono', monospace;
    font-size: 12px;
    color: var(--text-secondary);
}

.copy-btn {
    padding: 4px 8px;
    background: var(--primary-dim);
    border: none;
    border-radius: 4px;
    color: var(--primary-light);
    font-family: 'Inter', sans-serif;
    font-size: 11px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.copy-btn:hover {
    background: rgba(99,102,241,0.25);
}

/* --- Toast Notifications --- */
.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 300;
    display: flex;
    flex-direction: column;
    gap: 10px;
    pointer-events: none;
}

.toast {
    background: var(--bg-dark);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    padding: 14px 20px;
    min-width: 280px;
    max-width: 400px;
    box-shadow: var(--shadow-md);
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 13px;
    pointer-events: auto;
    animation: toastIn 0.4s cubic-bezier(0.16, 1, 0.3, 1) forwards;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
}

.toast.removing {
    animation: toastOut 0.3s ease forwards;
}

.toast-success { border-left: 3px solid var(--success); }
.toast-error { border-left: 3px solid var(--error); }
.toast-info { border-left: 3px solid var(--primary); }

.toast-icon { font-size: 16px; flex-shrink: 0; }

@keyframes toastIn {
    from { opacity: 0; transform: translateX(40px); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes toastOut {
    from { opacity: 1; transform: translateX(0); }
    to { opacity: 0; transform: translateX(40px); }
}

/* --- Loading Skeleton --- */
.skeleton {
    background: linear-gradient(
        90deg,
        rgba(255,255,255,0.03) 25%,
        rgba(255,255,255,0.06) 50%,
        rgba(255,255,255,0.03) 75%
    );
    background-size: 200% 100%;
    animation: shimmer 1.5s ease-in-out infinite;
    border-radius: var(--radius-sm);
}

.skeleton-text {
    height: 14px;
    width: 70%;
    margin-bottom: 8px;
}

.skeleton-title {
    height: 28px;
    width: 40%;
    margin-bottom: 12px;
}

.skeleton-card {
    height: 140px;
    border-radius: var(--radius-lg);
}

.skeleton-chart {
    height: 280px;
    border-radius: var(--radius-lg);
}

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

/* --- Empty State --- */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-secondary);
}

.empty-state .empty-icon {
    font-size: 48px;
    margin-bottom: 16px;
    opacity: 0.5;
}

.empty-state h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.empty-state p {
    font-size: 13px;
    max-width: 320px;
    margin: 0 auto;
}

/* --- Two-column layout (Overview bottom) --- */
.overview-bottom {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

/* --- Top Apps List --- */
.top-app-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 0;
    border-bottom: 1px solid var(--glass-border);
}

.top-app-item:last-child {
    border-bottom: none;
}

.top-app-info {
    display: flex;
    align-items: center;
    gap: 12px;
}

.top-app-rank {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--primary-dim);
    color: var(--primary-light);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: 700;
    flex-shrink: 0;
}

.top-app-name {
    font-size: 13px;
    font-weight: 500;
}

.top-app-count {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
}

/* --- Action buttons group --- */
.actions-group {
    display: flex;
    gap: 6px;
}

/* --- Responsive --- */
@media (max-width: 1024px) {
    .charts-grid {
        grid-template-columns: 1fr;
    }
    .overview-bottom {
        grid-template-columns: 1fr;
    }
}

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

    .sidebar.open {
        transform: translateX(0);
    }

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

    .menu-toggle {
        display: flex;
    }

    .content {
        padding: 20px 16px;
    }

    .top-header {
        padding: 0 16px;
    }

    .kpi-grid {
        grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
        gap: 12px;
    }

    .kpi-card {
        padding: 18px;
    }

    .kpi-value {
        font-size: 24px;
    }

    .filters-bar {
        flex-direction: column;
        align-items: stretch;
    }

    .form-input, .form-select {
        min-width: auto;
        width: 100%;
    }

    .table-card {
        border-radius: var(--radius-md);
    }

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

    .period-selector {
        display: none !important;
    }
}

/* --- Utilities --- */
.text-success { color: var(--success); }
.text-error { color: var(--error); }
.text-warning { color: var(--warning); }
.text-primary { color: var(--primary-light); }
.text-secondary { color: var(--text-secondary); }
.text-mono {
    font-family: 'JetBrains Mono', 'SF Mono', monospace;
    font-size: 12px;
}
.truncate {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 200px;
}
.mt-4 { margin-top: 16px; }
.mb-4 { margin-bottom: 16px; }
.gap-2 { gap: 8px; }
.flex { display: flex; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }