/* ==========================================================================
   Flight statistics — dark "mission control" theme.

   Owns every style on /flights/stats/. Nothing is inlined in the page.
   The design tokens on :root are the shared contract with the chart
   modules in assets/js/stats/charts/ — read them with
   getComputedStyle(document.documentElement).getPropertyValue('--text-dim')
   rather than hard-coding colors inside a chart.
   ========================================================================== */

:root {
    /* --- contract tokens (chart modules consume these) --- */
    --bg: #0a0e1a;
    --panel: rgba(255, 255, 255, 0.03);
    --border: rgba(255, 255, 255, 0.08);
    --text: #e5e7eb;
    --text-dim: #94a3b8;
    --text-faint: #64748b;
    --accent-a: #667eea;
    --accent-b: #764ba2;

    /* --- derived, page-local --- */
    --panel-hover: rgba(255, 255, 255, 0.05);
    --border-strong: rgba(255, 255, 255, 0.14);
    --grid-line: rgba(255, 255, 255, 0.06);
    --glow-a: rgba(102, 126, 234, 0.55);
    --glow-b: rgba(118, 75, 162, 0.28);

    --radius: 16px;
    --radius-sm: 10px;
    --gap: 24px;
    --page-pad: 40px;

    --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto,
            Helvetica, Arial, sans-serif;
    --mono: ui-monospace, SFMono-Regular, 'SF Mono', Menlo, Consolas, monospace;
}

/* ---------- reset / page canvas ---------- */

* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
    background: var(--bg);
    color: var(--text);
}

body {
    font-family: var(--font);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.stats-page {
    max-width: 1280px;
    margin: 0 auto;
    padding: var(--page-pad) var(--page-pad) 96px;
    min-height: 100vh;
    background:
        radial-gradient(900px 480px at 12% -6%, rgba(102, 126, 234, 0.10), transparent 62%),
        radial-gradient(760px 420px at 92% 2%, rgba(118, 75, 162, 0.09), transparent 60%);
}

/* All figures line up in columns. */
.kpi-value, .scale-value, .record-value, .record-sub, .stats-range,
.panel-sub, .rank-value, .kpi-unit, .kpi-delta, .scale-note {
    font-variant-numeric: tabular-nums;
}

/* ---------- view switcher ---------- */

.stats-nav {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 4px;
    width: fit-content;
    max-width: 100%;
    margin: 0 auto 44px;
    padding: 5px;
    border: 1px solid var(--border);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.035);
    backdrop-filter: blur(10px);
}

.stats-nav a {
    padding: 8px 16px;
    border-radius: 999px;
    color: var(--text-dim);
    font-size: 13px;
    font-weight: 500;
    text-decoration: none;
    white-space: nowrap;
    transition: background 0.18s ease, color 0.18s ease;
}

.stats-nav a:hover { background: rgba(255, 255, 255, 0.09); color: var(--text); }

.stats-nav a.active {
    background: linear-gradient(135deg, var(--accent-a) 0%, var(--accent-b) 100%);
    color: #fff;
    box-shadow: 0 4px 18px rgba(102, 126, 234, 0.35);
}

/* ---------- page header ---------- */

.stats-header {
    text-align: center;
    margin-bottom: 52px;
}

.stats-header h1 {
    margin: 0;
    font-size: clamp(2.1rem, 5.4vw, 3.4rem);
    font-weight: 700;
    line-height: 1.04;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    background: linear-gradient(105deg, #ffffff 0%, #c7d2fe 46%, #a78bfa 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
}

.stats-range {
    margin: 14px 0 0;
    font-size: 0.82rem;
    font-weight: 500;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--text-faint);
}

.stats-range .sep { opacity: 0.4; padding: 0 8px; }

/* ---------- shared panel ---------- */

.panel {
    position: relative;
    padding: 22px 24px 24px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--panel);
}

.panel-head {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 14px;
    margin-bottom: 18px;
}

.panel-title {
    margin: 0;
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 0.13em;
    text-transform: uppercase;
    color: var(--text);
}

.panel-sub {
    font-size: 0.72rem;
    color: var(--text-faint);
    text-align: right;
    line-height: 1.4;
}

/* Chart mount points. Height is a floor, not a cage: a module that sizes
   itself from a viewBox is free to grow past it. */
.chart {
    position: relative;
    width: 100%;
    min-height: 300px;
    overflow-x: auto;
    overflow-y: hidden;
}

.chart > svg { display: block; max-width: 100%; }

.chart--tall { min-height: 380px; }

.chart::-webkit-scrollbar { height: 6px; }
.chart::-webkit-scrollbar-track { background: transparent; }
.chart::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.14);
    border-radius: 3px;
}

/* ---------- section rhythm ---------- */

.stats-section { margin-bottom: var(--gap); }

.two-up {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--gap);
    margin-bottom: var(--gap);
}

/* ---------- hero KPI row ---------- */

.kpi-row {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: var(--gap);
    margin-bottom: var(--gap);
}

.kpi {
    position: relative;
    display: flex;
    flex-direction: column;
    padding: 24px 22px 20px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.045), rgba(255, 255, 255, 0.015));
    overflow: hidden;
    transition: border-color 0.22s ease, transform 0.22s ease;
}

.kpi::before {
    content: '';
    position: absolute;
    inset: 0 0 auto 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--accent-a), var(--accent-b), transparent);
    opacity: 0.65;
}

.kpi:hover { border-color: var(--border-strong); transform: translateY(-2px); }

.kpi-label {
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--text-faint);
}

.kpi-value {
    margin-top: 12px;
    font-size: clamp(1.9rem, 3.4vw, 2.9rem);
    font-weight: 700;
    line-height: 1;
    letter-spacing: -0.025em;
    color: #f2f5ff;
    text-shadow: 0 0 26px var(--glow-a), 0 0 62px var(--glow-b);
    word-break: break-word;
}

.kpi-unit {
    margin-top: 8px;
    font-size: 0.76rem;
    color: var(--text-dim);
}

.kpi-spark {
    height: 46px;
    margin-top: auto;
    padding-top: 16px;
}

.kpi-spark svg { display: block; width: 100%; height: 100%; overflow: visible; }

/* ---------- scale strip ---------- */

.scale-strip {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0;
    margin-bottom: var(--gap);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--panel);
    overflow: hidden;
}

.scale-item {
    display: flex;
    flex-direction: column;
    gap: 6px;
    padding: 26px 26px;
    border-left: 1px solid var(--border);
}

.scale-item:first-child { border-left: 0; }

.scale-value {
    font-size: clamp(1.5rem, 2.6vw, 2rem);
    font-weight: 650;
    line-height: 1;
    letter-spacing: -0.02em;
    color: var(--text);
}

.scale-value .unit {
    margin-left: 6px;
    font-size: 0.58em;
    font-weight: 500;
    letter-spacing: 0;
    color: var(--text-dim);
}

.scale-label {
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.13em;
    text-transform: uppercase;
    color: var(--accent-a);
}

.scale-note { font-size: 0.76rem; line-height: 1.5; color: var(--text-faint); }

/* ---------- records ---------- */

.records-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
}

.record-card {
    display: flex;
    flex-direction: column;
    gap: 6px;
    padding: 18px 18px 20px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.02);
}

.record-label {
    font-size: 0.68rem;
    font-weight: 600;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--text-faint);
}

.record-value {
    font-size: 1.06rem;
    font-weight: 600;
    line-height: 1.3;
    color: var(--text);
}

.record-sub { font-size: 0.8rem; color: var(--text-dim); }

/* The one leg Patrick flew himself. Deliberately the loudest card here. */
.record-hero {
    grid-column: 1 / -1;
    position: relative;
    display: grid;
    grid-template-columns: 62px minmax(0, 1fr);
    gap: 20px;
    align-items: start;
    margin-top: 6px;
    padding: 24px 26px;
    border: 1px solid rgba(102, 126, 234, 0.42);
    border-radius: var(--radius-sm);
    background:
        linear-gradient(120deg, rgba(102, 126, 234, 0.16), rgba(118, 75, 162, 0.09) 58%, transparent);
    overflow: hidden;
}

.record-hero::after {
    content: '';
    position: absolute;
    top: -60px;
    right: -40px;
    width: 220px;
    height: 220px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(102, 126, 234, 0.22), transparent 68%);
    pointer-events: none;
}

.record-hero-mark {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 62px;
    height: 62px;
    border: 1px solid rgba(102, 126, 234, 0.45);
    border-radius: 50%;
    background: rgba(10, 14, 26, 0.55);
    font-size: 26px;
    line-height: 1;
}

.record-hero-body { position: relative; z-index: 1; min-width: 0; }

.record-hero-label {
    font-size: 0.68rem;
    font-weight: 600;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: #a5b4fc;
}

.record-hero-title {
    margin: 8px 0 0;
    font-size: 1.28rem;
    font-weight: 650;
    line-height: 1.25;
    color: #f2f5ff;
}

.record-hero-copy {
    margin: 10px 0 0;
    max-width: 62ch;
    font-size: 0.9rem;
    line-height: 1.62;
    color: var(--text-dim);
}

.record-hero-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 16px;
}

.record-chip {
    padding: 5px 11px;
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.05);
    font-size: 0.71rem;
    letter-spacing: 0.05em;
    color: var(--text-dim);
    white-space: nowrap;
}

/* ---------- placeholders / notices ---------- */

.panel-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: inherit;
    padding: 34px 20px;
    border: 1px dashed rgba(255, 255, 255, 0.11);
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.012);
    color: var(--text-faint);
    font-size: 0.8rem;
    line-height: 1.5;
    text-align: center;
}

/* `min-height: inherit` above resolves to the .chart floor (290-380px), so an
   empty panel reads as one deliberate empty state rather than a small dashed
   box floating in dead space. A percentage would not resolve here: the parent
   sets min-height, not height. */

/* The strip is a 3-column grid, so its empty state has to span all of it. */
.scale-strip > .panel-placeholder {
    grid-column: 1 / -1;
    margin: 18px;
    min-height: 0;
}

.kpi-spark .panel-placeholder {
    min-height: 0;
    padding: 0;
    border: 0;
    border-top: 1px dashed rgba(255, 255, 255, 0.1);
    background: none;
    font-size: 0.66rem;
}

.stats-notice {
    display: flex;
    gap: 12px;
    align-items: flex-start;
    margin-bottom: var(--gap);
    padding: 14px 18px;
    border: 1px solid rgba(234, 179, 8, 0.3);
    border-radius: var(--radius-sm);
    background: rgba(234, 179, 8, 0.07);
    color: #fde68a;
    font-size: 0.82rem;
    line-height: 1.55;
}

.stats-footnote {
    margin: 32px 0 0;
    font-size: 0.74rem;
    line-height: 1.6;
    color: var(--text-faint);
    text-align: center;
}

/* ---------- shared chart furniture (used by chart modules) ---------- */

.stats-legend {
    display: flex;
    flex-wrap: wrap;
    gap: 6px 16px;
    margin-top: 14px;
    font-size: 0.73rem;
    color: var(--text-dim);
}

.stats-legend-item { display: flex; align-items: center; gap: 7px; }

.stats-legend-swatch {
    width: 10px;
    height: 10px;
    border-radius: 3px;
    flex: 0 0 auto;
}

.stats-tooltip {
    position: fixed;
    z-index: 1200;
    pointer-events: none;
    opacity: 0;
    padding: 8px 11px;
    border: 1px solid rgba(122, 162, 255, 0.4);
    border-radius: 8px;
    background: rgba(10, 14, 26, 0.96);
    box-shadow: 0 6px 22px rgba(0, 0, 0, 0.55);
    color: var(--text);
    font-size: 12.5px;
    line-height: 1.45;
    font-variant-numeric: tabular-nums;
    transition: opacity 0.12s ease;
}

/* ---------- responsive ---------- */

@media (max-width: 1100px) {
    :root { --page-pad: 32px; --gap: 20px; }
    .records-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 900px) {
    .two-up { grid-template-columns: minmax(0, 1fr); }
    .kpi-row { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .scale-strip { grid-template-columns: minmax(0, 1fr); }
    .scale-item { border-left: 0; border-top: 1px solid var(--border); padding: 20px 22px; }
    .scale-item:first-child { border-top: 0; }
    .chart { min-height: 280px; }
    .chart--tall { min-height: 330px; }
}

@media (max-width: 640px) {
    :root { --page-pad: 18px; --gap: 16px; }

    .stats-page { padding-bottom: 64px; }
    .stats-nav { gap: 2px; padding: 4px; margin-bottom: 32px; }
    .stats-nav a { padding: 7px 11px; font-size: 12px; }
    .stats-header { margin-bottom: 34px; }
    .stats-header h1 { letter-spacing: 0.1em; }
    .stats-range { letter-spacing: 0.14em; font-size: 0.72rem; }

    .kpi-row { grid-template-columns: minmax(0, 1fr); }
    .kpi { padding: 20px 18px 16px; }
    .kpi-value { font-size: 2.4rem; }
    .kpi-spark { height: 40px; padding-top: 12px; }

    .panel { padding: 18px 16px 20px; }
    .panel-head { flex-direction: column; align-items: flex-start; gap: 4px; margin-bottom: 14px; }
    .panel-sub { text-align: left; }

    .chart { min-height: 240px; }
    .chart--tall { min-height: 290px; }

    .records-grid { grid-template-columns: minmax(0, 1fr); }
    .record-hero {
        grid-template-columns: minmax(0, 1fr);
        gap: 14px;
        padding: 20px 18px;
    }
    .record-hero-mark { width: 52px; height: 52px; font-size: 22px; }
    .record-hero-title { font-size: 1.1rem; }
    .record-hero-copy { font-size: 0.86rem; }
}

@media (prefers-reduced-motion: reduce) {
    * { transition: none !important; animation: none !important; }
}