/* ═══════════════════════════════════════════════════════════════════════════
   White Collar Index — Editorial Light Theme
   ═══════════════════════════════════════════════════════════════════════════ */

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

:root {
    --bg: #f5f5f8;
    --bg-surface: #ffffff;
    --bg-raised: #ededf2;
    --bg-hover: #e6e6ec;
    --bg-nav: rgba(245, 245, 248, 0.88);
    --text: #1a1a2e;
    --text-2: #4a4a5a;
    --text-3: #8c8c9a;
    --accent: #3924d9;
    --accent-dim: rgba(57, 36, 217, 0.08);
    --accent-hover: #2e1cb3;
    --purple: #6c5ce7;
    --purple-dim: rgba(108, 92, 231, 0.08);
    --green: #0fa573;
    --green-dim: rgba(15, 165, 115, 0.06);
    --red: #d63031;
    --amber: #e17c1a;
    --border: rgba(0, 0, 0, 0.07);
    --border-active: rgba(0, 0, 0, 0.13);
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.06), 0 0 0 1px rgba(0, 0, 0, 0.03);
    --shadow-hover: 0 4px 12px rgba(0, 0, 0, 0.08), 0 0 0 1px rgba(0, 0, 0, 0.04);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.1);
    --radius: 10px;
    --radius-sm: 6px;
    --serif: 'Instrument Serif', Georgia, serif;
    --sans: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    --mono: 'JetBrains Mono', 'SF Mono', monospace;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--sans);
    background: var(--bg);
    color: var(--text);
    line-height: 1.55;
}

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

::selection { background: rgba(57, 36, 217, 0.15); }

.container {
    max-width: 1120px;
    margin: 0 auto;
    padding: 0 2rem;
}


/* ── Nav ──────────────────────────────────────────────────────────────── */

.navbar {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--bg-nav);
    backdrop-filter: blur(14px) saturate(180%);
    -webkit-backdrop-filter: blur(14px) saturate(180%);
    border-bottom: 1px solid var(--border);
}

.nav-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    height: 56px;
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    color: var(--text);
    text-decoration: none;
    font-weight: 700;
    font-size: 0.88rem;
    letter-spacing: -0.01em;
    flex-shrink: 0;
}

.nav-dot {
    width: 8px;
    height: 8px;
    background: var(--accent);
    border-radius: 2px;
    transform: rotate(45deg);
}

.nav-tabs {
    display: flex;
    gap: 0;
    flex: 1;
}

.nav-tab {
    font-family: var(--sans);
    font-weight: 500;
    font-size: 0.8rem;
    color: var(--text-3);
    background: none;
    border: none;
    padding: 1.1rem 0.85rem;
    cursor: pointer;
    transition: color 0.2s;
    position: relative;
    letter-spacing: 0.01em;
}

.nav-tab:hover { color: var(--text-2); }
.nav-tab.active { color: var(--text); }

.nav-tab.active::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0.5rem;
    right: 0.5rem;
    height: 2px;
    background: var(--accent);
    border-radius: 1px;
}

.nav-right { flex-shrink: 0; }

.btn-update {
    font-family: var(--sans);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-2);
    background: none;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 0.4rem 0.85rem;
    cursor: pointer;
    transition: all 0.2s;
    letter-spacing: 0.02em;
}
.btn-update:hover {
    border-color: var(--border-active);
    color: var(--text);
    background: var(--bg-surface);
    box-shadow: var(--shadow-sm);
}

.country-select {
    font-family: var(--sans);
    font-size: 0.78rem;
    font-weight: 500;
    color: var(--text-2);
    background: var(--bg-raised);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 0.35rem 2rem 0.35rem 0.7rem;
    outline: none;
    cursor: pointer;
    appearance: none;
    -webkit-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='%238c8c9a' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.5rem center;
    flex-shrink: 0;
    transition: border-color 0.15s;
}
.country-select:hover { border-color: var(--border-active); }
.country-select:focus { border-color: var(--accent); }
.country-select option { background: var(--bg-surface); }

.nav-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-2);
    cursor: pointer;
    padding: 0.5rem;
    font-size: 1.2rem;
}


/* ── Loading ──────────────────────────────────────────────────────────── */

.loading-screen {
    position: fixed;
    inset: 0;
    z-index: 200;
    background: var(--bg);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1.2rem;
    transition: opacity 0.5s;
}
.loading-screen.hidden { opacity: 0; pointer-events: none; }

.loading-spinner {
    width: 24px;
    height: 24px;
    border: 2px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.loading-text {
    font-family: var(--mono);
    font-size: 0.72rem;
    color: var(--text-3);
    letter-spacing: 0.06em;
    text-transform: uppercase;
    font-weight: 500;
}


/* ── Tab Panels ───────────────────────────────────────────────────────── */

.main { min-height: 100vh; }

.tab-panel { display: none; }
.tab-panel.active {
    display: block;
    animation: fadeIn 0.4s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}


/* ── Hero ──────────────────────────────────────────────────────────────── */

.hero {
    padding: 2.5rem 0 1.5rem;
}

.hero-eyebrow {
    font-family: var(--mono);
    font-size: 0.65rem;
    font-weight: 500;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 1rem;
}

.hero-title {
    font-family: var(--serif);
    font-weight: 400;
    font-size: clamp(2rem, 5vw, 3.2rem);
    line-height: 1.1;
    letter-spacing: -0.02em;
    color: var(--text);
    margin-bottom: 1rem;
    font-style: italic;
}

.hero-title .highlight {
    color: var(--accent);
    font-style: italic;
}

.hero-desc {
    font-size: 1rem;
    color: var(--text-2);
    max-width: 540px;
    line-height: 1.65;
    font-weight: 400;
}


/* ── Metrics ──────────────────────────────────────────────────────────── */

.metrics-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem 2.5rem;
    margin-bottom: 1.5rem;
}

.metric-card {
    padding: 0.6rem 1rem;
    border-left: 2px solid rgba(99, 91, 255, 0.15);
}

.metric-label {
    font-family: var(--mono);
    font-size: 0.6rem;
    font-weight: 500;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--text-3);
    margin-bottom: 0.25rem;
}

.metric-value {
    font-family: var(--mono);
    font-weight: 600;
    font-size: 1.1rem;
    color: var(--text);
    line-height: 1;
    letter-spacing: -0.02em;
}

.metric-delta {
    font-family: var(--mono);
    font-size: 0.65rem;
    margin-top: 0.2rem;
    font-weight: 500;
    color: var(--text-3);
}

.metric-delta.up { color: var(--green); }
.metric-delta.down { color: var(--red); }
.metric-delta.flat { color: var(--text-3); }


/* ── Controls Bar ─────────────────────────────────────────────────────── */

.controls-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
    padding: 0.75rem 0;
    margin-bottom: 1.5rem;
    border-bottom: 1px solid var(--border);
    flex-wrap: wrap;
}

.period-group {
    display: flex;
    gap: 2px;
    background: var(--bg-raised);
    border-radius: var(--radius-sm);
    padding: 2px;
}

.period-btn {
    font-family: var(--mono);
    font-size: 0.7rem;
    font-weight: 500;
    color: var(--text-3);
    background: none;
    border: none;
    padding: 0.35rem 0.65rem;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.15s;
    letter-spacing: 0.02em;
}

.period-btn:hover { color: var(--text-2); }

.period-btn.active {
    color: var(--accent);
    background: var(--bg-surface);
    box-shadow: var(--shadow-sm);
}

.smoothing-control {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.smoothing-label {
    font-family: var(--mono);
    font-size: 0.68rem;
    font-weight: 500;
    color: var(--text-3);
    white-space: nowrap;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.smoothing-slider {
    -webkit-appearance: none;
    appearance: none;
    width: 120px;
    height: 3px;
    background: var(--border-active);
    border-radius: 2px;
    outline: none;
    cursor: pointer;
}

.smoothing-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 15px;
    height: 15px;
    border-radius: 50%;
    background: var(--accent);
    cursor: pointer;
    box-shadow: 0 1px 4px rgba(57, 36, 217, 0.25);
    transition: transform 0.1s;
}

.smoothing-slider::-webkit-slider-thumb:hover {
    transform: scale(1.15);
}

.smoothing-slider::-moz-range-thumb {
    width: 15px;
    height: 15px;
    border-radius: 50%;
    background: var(--accent);
    border: none;
    cursor: pointer;
}

.smoothing-value {
    font-family: var(--mono);
    font-size: 0.7rem;
    font-weight: 500;
    color: var(--text-2);
    min-width: 2rem;
}


/* ── Chart Sections ───────────────────────────────────────────────────── */

.chart-section {
    margin-bottom: 2.5rem;
    animation: fadeIn 0.5s ease backwards;
}

.chart-section-header {
    margin-bottom: 1rem;
}

.chart-section-title {
    font-family: var(--serif);
    font-size: 1.15rem;
    font-weight: 400;
    color: var(--text);
    margin-bottom: 0.2rem;
    font-style: italic;
}

.chart-section-desc {
    font-size: 0.78rem;
    color: var(--text-3);
}

.chart-area {
    width: 100%;
    min-height: 280px;
}

.chart-card {
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow-sm);
}


/* ── Tables ────────────────────────────────────────────────────────────── */

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

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.8rem;
}

.data-table th {
    font-family: var(--mono);
    font-weight: 500;
    font-size: 0.58rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--text-3);
    padding: 0.7rem 0.9rem;
    text-align: left;
    border-bottom: 2px solid var(--border-active);
    white-space: nowrap;
}

.data-table td {
    padding: 0.55rem 0.9rem;
    border-bottom: 1px solid var(--border);
    color: var(--text-2);
    white-space: nowrap;
}

.data-table tbody tr { transition: background 0.12s; }
.data-table tbody tr:hover { background: var(--bg-raised); }

.data-table .mono {
    font-family: var(--mono);
    font-size: 0.75rem;
}

.data-table .sector-name {
    font-weight: 500;
    color: var(--text);
}

.data-table .positive { color: var(--green); }
.data-table .negative { color: var(--red); }
.data-table .dim { color: var(--text-3); opacity: 0.5; }

/* Sortable headers */
.sortable-table th.sortable-th {
    cursor: pointer;
    user-select: none;
    transition: color 0.15s;
}
.sortable-table th.sortable-th:hover { color: var(--text-2); }
.sortable-table th.sortable-th.sorted { color: var(--accent); }

/* Group header rows */
.group-header-row td {
    font-family: var(--mono);
    font-size: 0.6rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--accent);
    padding: 0.9rem 0.9rem 0.45rem;
    border-bottom: 1px solid rgba(57, 36, 217, 0.15);
    background: var(--accent-dim);
}


/* ── Sector Picker ────────────────────────────────────────────────────── */

.sector-picker {
    padding-bottom: 1.25rem;
    margin-bottom: 1rem;
    border-bottom: 1px solid var(--border);
}

/* Selected chips */
.sector-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    min-height: 2rem;
    align-items: center;
}

.sector-chips-empty {
    font-family: var(--mono);
    font-size: 0.68rem;
    color: var(--text-3);
    font-style: italic;
}

.sector-chip {
    font-family: var(--sans);
    font-size: 0.72rem;
    font-weight: 500;
    color: var(--text);
    background: var(--bg-raised);
    border: 1px solid var(--border);
    border-left: 3px solid var(--chip-color, var(--accent));
    border-radius: var(--radius-sm);
    padding: 0.3rem 0.5rem 0.3rem 0.55rem;
    cursor: pointer;
    transition: all 0.15s;
    display: flex;
    align-items: center;
    gap: 0.4rem;
    animation: cardIn 0.2s ease backwards;
}

.chip-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    flex-shrink: 0;
}

.chip-remove {
    font-size: 0.9rem;
    line-height: 1;
    color: var(--text-3);
    margin-left: 0.1rem;
    transition: color 0.1s;
}

.sector-chip:hover {
    border-color: var(--border-active);
    box-shadow: var(--shadow-sm);
}

.sector-chip:hover .chip-remove {
    color: var(--red);
}

/* Browse toggle */
.sector-browse-toggle {
    font-family: var(--mono);
    font-size: 0.65rem;
    font-weight: 500;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--text-3);
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.7rem 0 0.3rem;
    display: flex;
    align-items: center;
    gap: 0.4rem;
    transition: color 0.15s;
}

.sector-browse-toggle:hover {
    color: var(--accent);
}

.browse-chevron {
    display: inline-block;
    transition: transform 0.25s ease;
    font-size: 0.85rem;
}

.browse-chevron.open {
    transform: rotate(90deg);
}

/* Collapsible browse panel */
.sector-browse-panel {
    display: none;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    padding-top: 0.75rem;
    animation: fadeIn 0.3s ease;
}

.sector-browse-panel.open {
    display: grid;
}

.sector-group {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.sector-group-label {
    font-family: var(--mono);
    font-size: 0.56rem;
    font-weight: 500;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--text-3);
    padding: 0.4rem 0.25rem 0.2rem;
}

.sector-group-pills {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.sector-pill {
    font-family: var(--sans);
    font-size: 0.72rem;
    font-weight: 500;
    color: var(--text-3);
    background: transparent;
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    padding: 0.38rem 0.7rem;
    cursor: pointer;
    transition: all 0.15s;
    text-align: left;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.sector-pill .pill-value {
    font-family: var(--mono);
    font-size: 0.62rem;
    opacity: 0.35;
}

.sector-pill:hover {
    color: var(--text-2);
    background: var(--bg-raised);
}

.sector-pill.active {
    color: var(--accent);
    background: var(--accent-dim);
    border-color: rgba(57, 36, 217, 0.12);
}


/* ── Filter Bar ───────────────────────────────────────────────────────── */

.filter-bar {
    display: flex;
    gap: 0.6rem;
    padding-bottom: 1rem;
    margin-bottom: 1rem;
    border-bottom: 1px solid var(--border);
}

.filter-select {
    font-family: var(--sans);
    font-size: 0.78rem;
    font-weight: 500;
    color: var(--text-2);
    background: var(--bg-raised);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 0.4rem 2rem 0.4rem 0.7rem;
    outline: none;
    cursor: pointer;
    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='%238c8c9a' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.5rem center;
    transition: border-color 0.15s;
}
.filter-select:focus { border-color: var(--accent); }
.filter-select option { background: var(--bg-surface); }

.group-label {
    font-family: var(--mono);
    font-size: 0.6rem;
    font-weight: 500;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--text-3);
    background: var(--bg-raised);
    padding: 0.2rem 0.45rem;
    border-radius: 3px;
}


/* ── Empty State ──────────────────────────────────────────────────────── */

.empty-state {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--text-3);
}
.empty-state p { font-size: 0.88rem; margin-bottom: 0.5rem; }
.empty-state code {
    font-family: var(--mono);
    font-size: 0.78rem;
    background: var(--bg-raised);
    padding: 0.15rem 0.5rem;
    border-radius: 4px;
    color: var(--text-2);
}


/* ── Footer ───────────────────────────────────────────────────────────── */

.footer {
    margin-top: 4rem;
    padding: 2rem 0;
    border-top: 1px solid var(--border);
}

.footer-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-weight: 600;
    font-size: 0.8rem;
    color: var(--text);
}

.footer-dot {
    width: 6px;
    height: 6px;
    background: var(--accent);
    border-radius: 1.5px;
    transform: rotate(45deg);
}

.footer p {
    font-size: 0.72rem;
    color: var(--text-3);
}

.footer a { color: var(--accent); }

.footer-meta {
    font-family: var(--mono);
    font-size: 0.68rem;
}


/* ── Responsive ───────────────────────────────────────────────────────── */

@media (max-width: 768px) {
    .nav-tabs { display: none; }
    .nav-tabs.open {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 56px;
        left: 0;
        right: 0;
        background: var(--bg-surface);
        border-bottom: 1px solid var(--border);
        box-shadow: var(--shadow-lg);
        padding: 0.5rem 0;
    }
    .nav-tabs.open .nav-tab { padding: 0.8rem 2rem; }
    .nav-toggle { display: block; }
    .nav-right { display: none; }
    .country-select { font-size: 0.72rem; padding: 0.3rem 1.6rem 0.3rem 0.5rem; }
    .hero { padding: 3.5rem 0 1rem; }
    .hero-title { font-size: 1.8rem; }
    .container { padding: 0 1.25rem; }
    .controls-bar { flex-direction: column; align-items: flex-start; }
    .footer-inner { flex-direction: column; text-align: center; }
    .metrics-grid { gap: 1rem 1.5rem; }
    .sector-browse-panel.open { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
    .metrics-grid { gap: 0.75rem 1.25rem; }
    .hero-title { font-size: 1.5rem; }
}