/* ASC × USA North 811 — map-first briefing */
:root {
    --ink: #e8eef4;
    --ink-dim: #9aabba;
    --paper: #071018;
    --panel: rgba(8, 16, 24, 0.78);
    --line: rgba(232, 238, 244, 0.12);
    --amber: #f5c542;
    --cyan: #3ee0c4;
    --gas: #f5c542;
    --electric: #ef4444;
    --comm: #f97316;
    --water: #3b82f6;
    --sewer: #22c55e;
    --reclaim: #a855f7;
    --survey: #fb7185;
    --ca: #f5c542;
    --nv: #7dd3fc;
    --shadow: 0 24px 80px rgba(0, 0, 0, 0.45);
    --serif: "Instrument Serif", Georgia, serif;
    --sans: "IBM Plex Sans", ui-sans-serif, system-ui, sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; background: var(--paper); color: var(--ink); font-family: var(--sans); }
body.usan-story { overflow: hidden; }

#story-map { position: fixed; inset: 0; }
.maplibregl-ctrl-attrib { background: transparent !important; color: var(--ink-dim) !important; }
.maplibregl-ctrl-attrib a { color: var(--ink-dim) !important; }
.maplibregl-popup-content {
    background: #0d1822;
    color: var(--ink);
    border: 1px solid var(--line);
    border-radius: 10px;
    box-shadow: var(--shadow);
    font-family: var(--sans);
    padding: 10px 12px;
}
.maplibregl-popup-anchor-bottom .maplibregl-popup-tip { border-top-color: #0d1822; }

.usan-vignette {
    pointer-events: none;
    position: fixed;
    inset: 0;
    background:
        radial-gradient(120% 80% at 70% 40%, transparent 20%, rgba(4, 8, 12, 0.55) 70%, rgba(4, 8, 12, 0.82) 100%),
        linear-gradient(180deg, rgba(6, 16, 24, 0.45) 0%, transparent 22%, transparent 70%, rgba(6, 16, 24, 0.7) 100%);
    z-index: 2;
}
.usan-grain {
    pointer-events: none;
    position: fixed;
    inset: 0;
    z-index: 3;
    opacity: 0.07;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

.usan-top, .usan-card, .usan-rail, .usan-hud, .usan-bottom, .usan-briefing {
    position: fixed;
    z-index: 5;
}

.usan-top {
    top: 18px;
    left: 20px;
    right: 20px;
    display: flex;
    align-items: center;
    gap: 16px;
    pointer-events: none;
}
.usan-top > * { pointer-events: auto; }
.usan-brand { display: flex; align-items: center; gap: 12px; }
.usan-mark {
    display: grid;
    place-items: center;
    width: 42px;
    height: 42px;
    border-radius: 11px;
    background: linear-gradient(145deg, #0b3a4a, #073047 55%, #0f766e);
    color: #f8fafc;
    font-weight: 700;
    letter-spacing: -0.04em;
    box-shadow: 0 0 0 1px rgba(62, 224, 196, 0.25), 0 10px 30px rgba(0, 0, 0, 0.35);
}
.usan-brand-copy { display: flex; flex-direction: column; line-height: 1.15; }
.usan-brand-copy strong { font-size: 14px; letter-spacing: 0.08em; text-transform: uppercase; }
.usan-brand-copy span { font-size: 12px; color: var(--ink-dim); }
.usan-kicker {
    margin: 0 auto 0 12px;
    font-size: 12px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--ink-dim);
}
.usan-top-actions { display: flex; gap: 8px; margin-left: auto; }

.usan-btn {
    appearance: none;
    border: 1px solid var(--line);
    background: var(--panel);
    color: var(--ink);
    border-radius: 999px;
    padding: 8px 14px;
    font: 600 12px/1.2 var(--sans);
    letter-spacing: 0.04em;
    text-transform: uppercase;
    cursor: pointer;
    backdrop-filter: blur(16px);
}
.usan-btn:hover, .usan-btn.is-active { border-color: rgba(245, 197, 66, 0.55); color: var(--amber); }
.usan-btn-accent {
    background: linear-gradient(180deg, #f6cf5d, #e0a81a);
    color: #1a1204;
    border-color: transparent;
}
.usan-btn-accent:hover { color: #1a1204; filter: brightness(1.05); }
.usan-btn[hidden] { display: none !important; }

.usan-card {
    left: 22px;
    top: 92px;
    width: min(420px, calc(100vw - 44px));
    max-height: calc(100vh - 190px);
    overflow: auto;
    padding: 22px 22px 18px;
    border-radius: 18px;
    background: var(--panel);
    border: 1px solid var(--line);
    box-shadow: var(--shadow);
    backdrop-filter: blur(22px) saturate(140%);
}
.usan-card-num {
    margin: 0 0 6px;
    font-family: var(--serif);
    font-style: italic;
    font-size: 28px;
    color: var(--amber);
    letter-spacing: -0.03em;
}
.usan-card h1 {
    margin: 0 0 10px;
    font-family: var(--serif);
    font-weight: 400;
    font-size: clamp(28px, 4vw, 40px);
    line-height: 1.05;
    letter-spacing: -0.02em;
}
.usan-card-dek { margin: 0 0 14px; color: var(--cyan); font-size: 14px; font-weight: 500; }
.usan-card-body p { margin: 0 0 10px; color: var(--ink-dim); font-size: 14.5px; line-height: 1.55; }
.usan-facts {
    display: grid;
    gap: 8px;
    margin: 14px 0 16px;
}
.usan-fact {
    display: grid;
    grid-template-columns: 92px 1fr;
    gap: 8px;
    padding: 8px 10px;
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--line);
    font-size: 12.5px;
}
.usan-fact b { color: var(--ink-dim); font-weight: 600; text-transform: uppercase; letter-spacing: 0.06em; font-size: 10px; padding-top: 2px; }
.usan-card-actions { display: flex; flex-wrap: wrap; gap: 8px; }

.usan-rail {
    right: 18px;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.usan-rail button {
    width: 12px;
    height: 12px;
    padding: 0;
    border-radius: 999px;
    border: 1px solid rgba(255, 255, 255, 0.28);
    background: transparent;
    cursor: pointer;
}
.usan-rail button.is-active {
    height: 28px;
    background: var(--amber);
    border-color: var(--amber);
}
.usan-rail button:focus-visible { outline: 2px solid var(--cyan); outline-offset: 2px; }

.usan-hud { left: 22px; bottom: 64px; right: 22px; display: flex; align-items: flex-end; gap: 16px; pointer-events: none; }
.usan-legend, .usan-ticker { pointer-events: auto; }
.usan-legend {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    max-width: 520px;
}
.usan-chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 5px 9px;
    border-radius: 999px;
    background: rgba(8, 16, 24, 0.7);
    border: 1px solid var(--line);
    font-size: 11px;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--ink-dim);
    backdrop-filter: blur(12px);
}
.usan-chip i {
    width: 8px;
    height: 8px;
    border-radius: 99px;
    display: inline-block;
}
.usan-ticker {
    margin-left: auto;
    min-width: 240px;
    padding: 10px 12px;
    border-radius: 12px;
    background: rgba(8, 16, 24, 0.7);
    border: 1px solid var(--line);
    font-size: 12px;
    color: var(--ink-dim);
    backdrop-filter: blur(12px);
}
.usan-ticker strong { color: var(--ink); display: block; font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase; margin-bottom: 4px; }
.usan-hint {
    position: fixed;
    left: 50%;
    bottom: 92px;
    transform: translateX(-50%);
    margin: 0;
    padding: 8px 14px;
    border-radius: 999px;
    background: rgba(245, 197, 66, 0.15);
    border: 1px solid rgba(245, 197, 66, 0.4);
    color: var(--amber);
    font-size: 12px;
    z-index: 6;
}
.usan-hint[hidden] { display: none; }

.usan-bottom {
    left: 0;
    right: 0;
    bottom: 0;
    padding: 10px 22px 12px;
    display: flex;
    align-items: center;
    gap: 16px;
    background: linear-gradient(180deg, transparent, rgba(6, 16, 24, 0.75));
}
.usan-progress { flex: 1; height: 3px; background: rgba(255, 255, 255, 0.08); border-radius: 99px; overflow: hidden; }
.usan-progress i { display: block; height: 100%; width: 0; background: linear-gradient(90deg, var(--electric), var(--gas), var(--water), var(--sewer)); transition: width 0.4s ease; }
.usan-foot-copy, .usan-foot-keys { margin: 0; font-size: 11px; color: var(--ink-dim); }
.usan-foot-keys { margin-left: auto; letter-spacing: 0.04em; }

.usan-briefing {
    inset: 0;
    background: rgba(3, 8, 12, 0.55);
    display: grid;
    place-items: center;
    padding: 24px;
    z-index: 8;
}
.usan-briefing[hidden] { display: none; }
.usan-briefing-panel {
    width: min(920px, 100%);
    max-height: min(88vh, 920px);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    background: #0b141c;
    border: 1px solid var(--line);
    border-radius: 18px;
    box-shadow: var(--shadow);
}
.usan-briefing-head, .usan-briefing-tabs { padding: 16px 20px 0; display: flex; align-items: center; gap: 12px; }
.usan-briefing-head { justify-content: space-between; }
.usan-briefing-kicker { margin: 0; font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--cyan); }
.usan-briefing-panel h2 { margin: 4px 0 0; font-family: var(--serif); font-weight: 400; font-size: 32px; }
.usan-briefing-tabs { border-bottom: 1px solid var(--line); padding-bottom: 0; }
.usan-briefing-tabs button {
    appearance: none;
    background: none;
    border: 0;
    border-bottom: 2px solid transparent;
    color: var(--ink-dim);
    font: 600 12px var(--sans);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    padding: 10px 4px 12px;
    margin-right: 16px;
    cursor: pointer;
}
.usan-briefing-tabs button.is-active { color: var(--ink); border-bottom-color: var(--amber); }
.usan-briefing-body { padding: 18px 22px 24px; overflow: auto; }
.usan-briefing-body h3 { font-family: var(--serif); font-weight: 400; font-size: 22px; margin: 22px 0 8px; }
.usan-briefing-body p { color: var(--ink-dim); line-height: 1.6; margin: 0 0 10px; }
.usan-matrix { width: 100%; border-collapse: collapse; font-size: 13px; }
.usan-matrix th, .usan-matrix td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
.usan-matrix th { color: var(--ink-dim); font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase; }
.usan-yes { color: #86efac; font-weight: 600; }

@media (max-width: 820px) {
    .usan-kicker, .usan-ticker, .usan-foot-keys { display: none; }
    .usan-card { top: auto; bottom: 78px; max-height: 42vh; }
    .usan-rail { top: auto; bottom: 86px; transform: none; right: 12px; }
    .usan-hud { bottom: auto; top: 78px; }
    .usan-legend { max-width: 100%; }
}