/* Labelling App - Dark Theme (consistent with viewer) */

:root {
    --bg: #0a0a0f;
    --bg-panel: #12131a;
    --bg-hover: #1a1b24;
    --bg-card: #161722;
    --border: #252530;
    --text: #e0e0e0;
    --text-muted: #6b7280;
    --text-primary: #ffffff;
    --accent: #667eea;
    --accent-hover: #5a6fd6;
    --accent-glow: rgba(102, 126, 234, 0.3);
    --success: #4ade80;
    --success-bg: rgba(74, 222, 128, 0.1);
    --warning: #fbbf24;
    --warning-bg: rgba(251, 191, 36, 0.1);
    --error: #f87171;
    --error-bg: rgba(248, 113, 113, 0.1);
    --info: #60a5fa;
    --info-bg: rgba(96, 165, 250, 0.1);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    line-height: 1.5;
}

/* --- Navbar --- */

.navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    height: 56px;
    background: var(--bg-panel);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.navbar-left {
    display: flex;
    align-items: center;
    gap: 20px;
}

.navbar-brand {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    text-decoration: none;
}

.navbar-links {
    display: flex;
    gap: 4px;
}

.navbar-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 14px;
    padding: 6px 12px;
    border-radius: 6px;
    transition: all 0.15s;
}

.navbar-links a:hover {
    color: var(--text);
    background: var(--bg-hover);
}

.navbar-links a.active {
    color: var(--accent);
    background: var(--accent-glow);
}

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

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

.navbar-user strong {
    color: var(--text);
}

/* --- Buttons --- */

.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--bg-panel);
    color: var(--text);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.15s;
    text-decoration: none;
}

.btn:hover {
    background: var(--bg-hover);
    border-color: var(--text-muted);
}

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

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

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

.btn-danger:hover {
    background: var(--error-bg);
}

.btn-sm {
    padding: 4px 10px;
    font-size: 12px;
}

.btn-ghost {
    border: none;
    background: none;
}

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

/* --- Login Page --- */

.login-container {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
}

.login-box {
    width: 380px;
    background: var(--bg-panel);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 40px 32px;
}

.login-title {
    font-size: 24px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.login-subtitle {
    font-size: 14px;
    color: var(--text-muted);
    margin-bottom: 28px;
}

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

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

.form-input {
    width: 100%;
    padding: 10px 12px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 14px;
    outline: none;
    transition: border-color 0.15s;
}

.form-input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

.form-error {
    display: none;
    padding: 10px 12px;
    background: var(--error-bg);
    border: 1px solid rgba(248, 113, 113, 0.3);
    border-radius: 8px;
    color: var(--error);
    font-size: 13px;
    margin-bottom: 16px;
}

.form-error.visible {
    display: block;
}

.login-btn {
    width: 100%;
    padding: 10px;
    margin-top: 8px;
}

/* --- Page Container --- */

.page {
    max-width: 1200px;
    margin: 0 auto;
    padding: 24px;
}

.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
}

.page-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
}

/* --- Stats Bar --- */

.stats-bar {
    display: flex;
    gap: 12px;
    margin-bottom: 24px;
}

.stat-card {
    flex: 1;
    background: var(--bg-panel);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 16px 20px;
}

.stat-value {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.2;
}

.stat-label {
    font-size: 12px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-top: 2px;
}

/* --- Table --- */

.table-container {
    background: var(--bg-panel);
    border: 1px solid var(--border);
    border-radius: 10px;
    overflow: hidden;
}

.table-toolbar {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border-bottom: 1px solid var(--border);
}

.table-filter {
    padding: 6px 10px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text);
    font-size: 13px;
    outline: none;
}

.table-filter:focus {
    border-color: var(--accent);
}

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

thead th {
    text-align: left;
    padding: 10px 16px;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-bottom: 1px solid var(--border);
    background: var(--bg-card);
}

tbody tr {
    border-bottom: 1px solid var(--border);
    transition: background 0.1s;
}

tbody tr:hover {
    background: var(--bg-hover);
}

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

tbody td {
    padding: 10px 16px;
    font-size: 13px;
}

.clickable-row {
    cursor: pointer;
}

/* --- Status Badges --- */

.badge {
    display: inline-flex;
    align-items: center;
    padding: 2px 8px;
    border-radius: 10px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.badge-pending {
    background: var(--info-bg);
    color: var(--info);
}

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

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

.badge-skipped {
    background: rgba(107, 114, 128, 0.2);
    color: var(--text-muted);
}

/* --- UUID display --- */

.uuid-text {
    font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
    font-size: 12px;
    color: var(--text-muted);
}

.uuid-text-short {
    font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
    font-size: 12px;
}

/* --- Tabs --- */

.tabs {
    display: flex;
    gap: 2px;
    margin-bottom: 24px;
    border-bottom: 1px solid var(--border);
}

.tab {
    padding: 10px 20px;
    border: none;
    background: none;
    color: var(--text-muted);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    border-bottom: 2px solid transparent;
    transition: all 0.15s;
    margin-bottom: -1px;
}

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

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

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

/* --- Empty state --- */

.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-muted);
}

.empty-state p {
    font-size: 15px;
    margin-bottom: 16px;
}

/* --- Dialog / Modal --- */

.modal-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    z-index: 200;
    align-items: center;
    justify-content: center;
}

.modal-overlay.visible {
    display: flex;
}

.modal-box {
    background: var(--bg-panel);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 24px;
    width: 420px;
    max-width: 90vw;
}

.modal-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 8px;
    margin-top: 20px;
}

/* --- Loading --- */

.loading-text {
    color: var(--text-muted);
    font-size: 14px;
    padding: 20px;
    text-align: center;
}

/* --- Performance Charts --- */

.performance-controls {
    display: flex;
    gap: 24px;
    align-items: center;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.performance-controls .form-group {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin: 0;
}

.charts-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-top: 16px;
}

.chart-card {
    background: var(--bg-panel);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 20px;
}

.chart-card.full-width {
    grid-column: 1 / -1;
}

.chart-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 12px 0;
}

.confusion-matrix {
    margin-top: 16px;
    overflow-x: auto;
}

.confusion-matrix table {
    border-collapse: collapse;
    font-size: 12px;
}

.confusion-matrix th,
.confusion-matrix td {
    width: 44px;
    height: 36px;
    text-align: center;
    padding: 4px;
    border: 1px solid var(--border);
}

.confusion-matrix th {
    background: var(--bg-card);
    color: var(--text-muted);
    font-weight: 600;
    font-size: 11px;
}

.confusion-matrix td {
    font-weight: 500;
    font-variant-numeric: tabular-nums;
}

.perf-link {
    color: var(--accent);
    text-decoration: none;
    cursor: pointer;
}

.perf-link:hover {
    text-decoration: underline;
}

/* --- Responsive --- */

@media (max-width: 768px) {
    .page {
        padding: 16px;
    }

    .stats-bar {
        flex-wrap: wrap;
    }

    .stat-card {
        min-width: calc(50% - 8px);
    }

    .navbar {
        padding: 0 12px;
    }

    table {
        font-size: 12px;
    }

    thead th, tbody td {
        padding: 8px 10px;
    }

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

    .performance-controls {
        flex-direction: column;
        align-items: flex-start;
    }
}

/* --- Labelling viewer nav bar (overlays viewer top bar) --- */

.labelling-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 36px;
    background: rgba(18, 19, 26, 0.92);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 16px;
    z-index: 1000;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

.labelling-nav a,
.labelling-nav button {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 12px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px 8px;
    border-radius: 4px;
    transition: all 0.15s;
}

.labelling-nav a:hover,
.labelling-nav button:hover {
    color: var(--text);
    background: rgba(255, 255, 255, 0.05);
}

.labelling-nav-left {
    display: flex;
    align-items: center;
    gap: 8px;
}

.labelling-nav-right {
    display: flex;
    align-items: center;
    gap: 8px;
}

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

.labelling-nav-sep {
    color: var(--border);
    margin: 0 4px;
}

.labelling-nav .save-indicator {
    font-size: 11px;
    padding: 2px 8px;
    border-radius: 3px;
}

.labelling-nav .save-indicator.pending {
    color: var(--warning);
}

.labelling-nav .save-indicator.saved {
    color: var(--success);
}

/* Shift viewer content down for the labelling nav bar */
body.has-labelling-nav {
    padding-top: 36px !important;
}

body.has-labelling-nav .top-bar {
    top: 36px !important;
    position: sticky;
}

body.has-labelling-nav .side-panel {
    top: 36px;
}