/* ═══════════════════════════════════════════════════
   SaltHaber AI Studio — Premium Dark Theme
   ═══════════════════════════════════════════════════ */

/* ── CSS Custom Properties (Design Tokens) ──────── */
:root {
    /* Colors */
    --bg-primary: #06060b;
    --bg-secondary: #0d0d14;
    --bg-card: #12121c;
    --bg-card-hover: #181828;
    --bg-elevated: #1a1a2e;
    --bg-input: #0f0f1a;

    --text-primary: #eaeaef;
    --text-secondary: #8888a0;
    --text-muted: #55556a;
    --text-inverse: #06060b;

    --accent-primary: #e94560;
    --accent-primary-hover: #ff5a75;
    --accent-primary-glow: rgba(233, 69, 96, 0.25);
    --accent-secondary: #4361ee;
    --accent-secondary-glow: rgba(67, 97, 238, 0.2);

    --success: #10b981;
    --success-bg: rgba(16, 185, 129, 0.1);
    --warning: #f59e0b;
    --warning-bg: rgba(245, 158, 11, 0.1);
    --error: #ef4444;
    --error-bg: rgba(239, 68, 68, 0.1);
    --info: #3b82f6;
    --info-bg: rgba(59, 130, 246, 0.1);

    --border: rgba(255, 255, 255, 0.06);
    --border-hover: rgba(255, 255, 255, 0.12);
    --border-active: rgba(233, 69, 96, 0.4);

    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 20px var(--accent-primary-glow);

    /* Layout */
    --sidebar-width: 260px;
    --header-height: 64px;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-full: 9999px;

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-xs: 0.75rem;
    --font-sm: 0.8125rem;
    --font-base: 0.875rem;
    --font-md: 1rem;
    --font-lg: 1.125rem;
    --font-xl: 1.375rem;
    --font-2xl: 1.75rem;
    --font-3xl: 2.25rem;

    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);
    --bg-hover: rgba(255, 255, 255, 0.05);
    --bg-hover-subtle: rgba(255, 255, 255, 0.02);
}

:root[data-theme="light"] {
    --bg-primary: #f4f5f7;
    --bg-secondary: #ffffff;
    --bg-card: #ffffff;
    --bg-card-hover: #f9fafb;
    --bg-elevated: #ffffff;
    --bg-input: #f9fafb;

    --text-primary: #111827;
    --text-secondary: #4b5563;
    --text-muted: #6b7280;
    --text-inverse: #ffffff;

    --bg-hover: rgba(0, 0, 0, 0.05);
    --bg-hover-subtle: rgba(0, 0, 0, 0.02);

    --border: rgba(0, 0, 0, 0.08);
    --border-hover: rgba(0, 0, 0, 0.12);
    --border-active: rgba(233, 69, 96, 0.4);

    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}


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

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    transition: background-color var(--transition-base), color var(--transition-base);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    display: flex;
    min-height: 100vh;
    overflow-x: hidden;
}

a { color: var(--accent-primary); text-decoration: none; }
a:hover { color: var(--accent-primary-hover); }

/* ── Scrollbar ─────────────────────────────────── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--text-muted); border-radius: var(--radius-full); }
::-webkit-scrollbar-thumb:hover { background: var(--text-secondary); }

/* ── Sidebar ───────────────────────────────────── */
.sidebar {
    width: var(--sidebar-width);
    min-height: 100vh;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    z-index: 100;
    transition: transform var(--transition-base), background-color var(--transition-base), border-color var(--transition-base);
}

.sidebar-header {
    padding: 20px 20px 16px;
    border-bottom: 1px solid var(--border);
}

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

.logo-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--accent-primary), #c23152);
    border-radius: var(--radius-md);
    box-shadow: 0 0 20px var(--accent-primary-glow);
}

.logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}

.logo-title {
    font-size: var(--font-lg);
    font-weight: 800;
    background: linear-gradient(135deg, var(--text-primary), var(--accent-primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo-subtitle {
    font-size: var(--font-xs);
    font-weight: 500;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 2px;
}

/* Sidebar Navigation */
.sidebar-nav {
    flex: 1;
    padding: 12px 10px;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 11px 14px;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: var(--font-base);
    font-weight: 500;
    transition: all var(--transition-fast);
    position: relative;
    overflow: hidden;
}

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

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

.nav-item.active {
    color: var(--text-primary);
    background: rgba(233, 69, 96, 0.08);
}

.nav-item.active::before {
    height: 24px;
}

.nav-item svg {
    flex-shrink: 0;
    opacity: 0.7;
}

.nav-item.active svg {
    opacity: 1;
    color: var(--accent-primary);
}

/* Sidebar Footer */
.sidebar-footer {
    padding: 16px 20px;
    border-top: 1px solid var(--border);
}

.system-status {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: var(--font-sm);
    color: var(--text-muted);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

.status-online { background: var(--success); box-shadow: 0 0 8px rgba(16, 185, 129, 0.5); }
.status-offline { background: var(--error); box-shadow: 0 0 8px rgba(239, 68, 68, 0.5); }

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

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

/* Top Header */
.top-header {
    height: var(--header-height);
    padding: 0 28px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--border);
    background: var(--bg-secondary);
    position: sticky;
    top: 0;
    z-index: 50;
    backdrop-filter: blur(12px);
    transition: background-color var(--transition-base), border-color var(--transition-base);
}

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

.menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 8px;
    border-radius: var(--radius-sm);
}

.menu-toggle:hover { background: var(--bg-hover); }

.page-title {
    font-size: var(--font-xl);
    font-weight: 700;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--text-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* Alert Badge */
.alert-badge {
    position: relative;
    padding: 8px;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.alert-badge:hover { background: var(--bg-hover); color: var(--warning); }

.badge-count {
    position: absolute;
    top: 2px;
    right: 2px;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--error);
    color: white;
    font-size: 10px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Alert Banner */
.alert-banner {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 28px;
    background: var(--error-bg);
    border-bottom: 1px solid rgba(239, 68, 68, 0.2);
    color: var(--error);
    font-size: var(--font-sm);
    font-weight: 500;
    animation: slideDown 0.3s ease;
}

.alert-close {
    margin-left: auto;
    background: none;
    border: none;
    color: inherit;
    font-size: 18px;
    cursor: pointer;
    opacity: 0.6;
}

.alert-close:hover { opacity: 1; }

@keyframes slideDown {
    from { transform: translateY(-100%); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

/* Page Content */
.page-content {
    flex: 1;
    padding: 24px 28px;
    animation: fadeIn 0.3s ease;
}

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

/* ── Cards ─────────────────────────────────────── */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 20px;
    transition: all var(--transition-fast);
}

.card:hover {
    border-color: var(--border-hover);
    box-shadow: var(--shadow-md);
}

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

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

.card-subtitle {
    font-size: var(--font-sm);
    color: var(--text-muted);
}

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

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 20px;
    position: relative;
    overflow: hidden;
    transition: all var(--transition-fast);
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    border-radius: var(--radius-md) var(--radius-md) 0 0;
}

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

.stat-card.accent-red::before { background: linear-gradient(90deg, var(--accent-primary), #ff7b93); }
.stat-card.accent-blue::before { background: linear-gradient(90deg, var(--accent-secondary), #6b8cff); }
.stat-card.accent-green::before { background: linear-gradient(90deg, var(--success), #34d399); }
.stat-card.accent-yellow::before { background: linear-gradient(90deg, var(--warning), #fbbf24); }

.stat-value {
    font-size: var(--font-3xl);
    font-weight: 800;
    line-height: 1;
    margin-bottom: 4px;
    background: linear-gradient(135deg, var(--text-primary), var(--text-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: var(--font-sm);
    color: var(--text-muted);
    font-weight: 500;
}

.stat-icon {
    position: absolute;
    top: 16px;
    right: 16px;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0.15;
}

/* ── Charts Grid ───────────────────────────────── */
.charts-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 16px;
    margin-bottom: 24px;
}

.chart-container {
    position: relative;
    height: 280px;
}

/* ── Data Table ────────────────────────────────── */
.table-wrapper {
    overflow-x: auto;
    border-radius: var(--radius-md);
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--font-sm);
}

.data-table thead th {
    padding: 12px 16px;
    text-align: left;
    font-weight: 600;
    color: var(--text-muted);
    font-size: var(--font-xs);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-bottom: 1px solid var(--border);
    background: var(--bg-secondary);
    position: sticky;
    top: 0;
}

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

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

.data-table tbody td {
    padding: 12px 16px;
    color: var(--text-primary);
    vertical-align: middle;
}

/* ── Status Badges ─────────────────────────────── */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 10px;
    border-radius: var(--radius-full);
    font-size: var(--font-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.badge-success { background: var(--success-bg); color: var(--success); }
.badge-warning { background: var(--warning-bg); color: var(--warning); }
.badge-error { background: var(--error-bg); color: var(--error); }
.badge-info { background: var(--info-bg); color: var(--info); }
.badge-muted { background: var(--bg-hover); color: var(--text-muted); }

/* ── Buttons ───────────────────────────────────── */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 18px;
    border: none;
    border-radius: var(--radius-sm);
    font-family: var(--font-family);
    font-size: var(--font-sm);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.btn-sm { padding: 7px 14px; font-size: var(--font-xs); }

.btn-primary {
    background: linear-gradient(135deg, var(--accent-primary), #c23152);
    color: white;
    box-shadow: 0 2px 8px var(--accent-primary-glow);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--accent-primary-hover), var(--accent-primary));
    box-shadow: 0 4px 16px var(--accent-primary-glow);
    transform: translateY(-1px);
}

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

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

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
}

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

.btn-danger {
    background: var(--error-bg);
    color: var(--error);
    border: 1px solid rgba(239, 68, 68, 0.2);
}

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

.btn-icon {
    padding: 8px;
    background: transparent;
    color: var(--text-muted);
}

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

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

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

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

.form-input:focus, .form-select:focus, .form-textarea:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px var(--accent-primary-glow);
}

.form-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%238888a0' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 36px;
}

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

/* Checkbox toggle */
.toggle-wrapper {
    display: flex;
    align-items: center;
    gap: 10px;
}

.toggle {
    position: relative;
    width: 44px;
    height: 24px;
}

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

.toggle-slider {
    position: absolute;
    cursor: pointer;
    inset: 0;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
}

.toggle-slider::before {
    content: '';
    position: absolute;
    left: 3px;
    top: 3px;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--text-muted);
    transition: all var(--transition-fast);
}

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

.toggle input:checked + .toggle-slider::before {
    transform: translateX(20px);
    background: white;
}

/* ── Modal ─────────────────────────────────────── */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    animation: fadeIn 0.2s ease;
}

.modal {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    width: 90%;
    max-width: 500px;
    box-shadow: var(--shadow-lg);
    animation: modalSlide 0.3s ease;
}

@keyframes modalSlide {
    from { transform: translateY(16px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

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

.modal-header h2 {
    font-size: var(--font-lg);
    font-weight: 700;
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 24px;
    cursor: pointer;
    padding: 4px 8px;
    border-radius: var(--radius-sm);
}

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

.modal-body { padding: 24px; }
.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    padding: 16px 24px;
    border-top: 1px solid var(--border);
}

/* ── Activity Feed ─────────────────────────────── */
.activity-feed {
    display: flex;
    flex-direction: column;
    gap: 2px;
    max-height: 400px;
    overflow-y: auto;
}

.activity-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 12px 0;
    border-bottom: 1px solid var(--border);
}

.activity-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    margin-top: 6px;
    flex-shrink: 0;
}

.activity-dot.success { background: var(--success); }
.activity-dot.error { background: var(--error); }
.activity-dot.warning { background: var(--warning); }
.activity-dot.info { background: var(--info); }

.activity-content {
    flex: 1;
    min-width: 0;
}

.activity-message {
    font-size: var(--font-sm);
    color: var(--text-primary);
    line-height: 1.4;
}

.activity-time {
    font-size: var(--font-xs);
    color: var(--text-muted);
    margin-top: 2px;
}

/* ── Empty State ───────────────────────────────── */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 48px 24px;
    text-align: center;
}

.empty-state svg {
    color: var(--text-muted);
    opacity: 0.4;
    margin-bottom: 16px;
}

.empty-state h3 {
    font-size: var(--font-md);
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.empty-state p {
    font-size: var(--font-sm);
    color: var(--text-muted);
}

/* ── Platform Icons ────────────────────────────── */
.platform-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 700;
}

.platform-youtube { background: rgba(255, 0, 0, 0.1); color: #FF0000; }
.platform-x { background: var(--bg-hover); color: var(--text-primary); }
.platform-instagram { background: rgba(225, 48, 108, 0.1); color: #E1306C; }
.platform-tiktok { background: rgba(0, 242, 234, 0.1); color: #00F2EA; }

/* ── Pagination ────────────────────────────────── */
.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    margin-top: 20px;
}

.pagination button {
    padding: 6px 12px;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-family: var(--font-family);
    font-size: var(--font-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.pagination button:hover { background: var(--bg-card-hover); border-color: var(--border-hover); }
.pagination button.active { background: var(--accent-primary); border-color: var(--accent-primary); color: white; }
.pagination button:disabled { opacity: 0.3; cursor: not-allowed; }

/* ── Filter Bar ────────────────────────────────── */
.filter-bar {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.filter-bar .form-select, .filter-bar .form-input {
    width: auto;
    min-width: 160px;
}

/* ── Log Viewer ────────────────────────────────── */
.log-entry {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 10px 14px;
    border-radius: var(--radius-sm);
    font-size: var(--font-sm);
    font-family: 'SF Mono', 'Fira Code', monospace;
    margin-bottom: 2px;
}

.log-entry:hover { background: var(--bg-hover-subtle); }

.log-entry .log-time {
    color: var(--text-muted);
    flex-shrink: 0;
    min-width: 80px;
}

.log-entry .log-step {
    color: var(--accent-secondary);
    flex-shrink: 0;
    min-width: 120px;
}

.log-entry .log-message { color: var(--text-primary); flex: 1; }

.log-entry.log-success .log-step { color: var(--success); }
.log-entry.log-failed .log-step { color: var(--error); }
.log-entry.log-warning .log-step { color: var(--warning); }

/* ── Section Headers ───────────────────────────── */
.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
}

.section-title {
    font-size: var(--font-lg);
    font-weight: 700;
}

/* ── Tabs ───────────────────────────────────────── */
.tabs {
    display: flex;
    gap: 4px;
    margin-bottom: 20px;
    border-bottom: 1px solid var(--border);
    padding-bottom: 0;
}

.tab {
    padding: 10px 18px;
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    color: var(--text-muted);
    font-family: var(--font-family);
    font-size: var(--font-sm);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    margin-bottom: -1px;
}

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

.tab.active {
    color: var(--accent-primary);
    border-bottom-color: var(--accent-primary);
}

/* ── Loading Spinner ───────────────────────────── */
.spinner {
    width: 24px;
    height: 24px;
    border: 3px solid var(--border);
    border-top-color: var(--accent-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

.loading-overlay {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 48px;
    gap: 12px;
    color: var(--text-muted);
}

/* ── Toast Notification ────────────────────────── */
.toast-container {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 2000;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.toast {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 18px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    font-size: var(--font-sm);
    animation: toastIn 0.3s ease;
    min-width: 280px;
}

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

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

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

@media (max-width: 768px) {
    .sidebar { transform: translateX(-100%); }
    .sidebar.open { transform: translateX(0); }
    .main-content { margin-left: 0; }
    .menu-toggle { display: flex; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .page-content { padding: 16px; }
    .filter-bar { flex-direction: column; align-items: stretch; }
    .filter-bar .form-select, .filter-bar .form-input { width: 100%; }
}

@media (max-width: 480px) {
    .stats-grid { grid-template-columns: 1fr; }
}