:root { color-scheme: dark; --ink: #e8ecef; --dim: #9aa4ad; --good: #3ddc84; --bad: #ff5a5a; --amber: #ffd34d; }
* { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { margin: 0; height: 100%; background: #05070a; color: var(--ink); font: 14px/1.4 system-ui, -apple-system, "Segoe UI", sans-serif; overflow: hidden; cursor: crosshair; }
#view, #view canvas { position: fixed; inset: 0; width: 100%; height: 100%; display: block; }
#hud { position: fixed; inset: 0; pointer-events: none; }
#hud > div { position: absolute; }
#loading { position: fixed; inset: 0; display: grid; place-items: center; font-size: 18px; letter-spacing: 0.1em; color: var(--dim); background: #05070a; }
#vitals { left: 24px; bottom: 24px; width: 260px; }
.bar { height: 14px; background: #1a1f24; border: 1px solid #3a434b; position: relative; }
.bar .fill { height: 100%; background: linear-gradient(90deg, #4caf50, #8bc34a); transition: width 0.2s; }
.bar.low .fill { background: linear-gradient(90deg, #c62828, #ff5a5a); }
.bar .label { position: absolute; left: 6px; top: -1px; font-size: 10px; letter-spacing: 0.2em; color: #fff; mix-blend-mode: difference; }
#infection { margin-top: 8px; font-size: 13px; color: var(--amber); }
#infection .tag { background: var(--amber); color: #000; font-weight: 700; padding: 0 6px; letter-spacing: 0.1em; }
#infection.urgent { color: var(--bad); animation: pulse 0.8s infinite; }
#infection.urgent .tag { background: var(--bad); }
@keyframes pulse { 50% { opacity: 0.4; } }
#people { right: 24px; top: 24px; text-align: right; }
#people b.good { color: var(--good); } #people b.bad { color: var(--bad); }
.alarm { color: var(--bad); font-weight: 600; margin-top: 4px; animation: pulse 1s infinite; }
#weapon { right: 24px; bottom: 24px; text-align: right; }
#wname { font-size: 16px; font-weight: 600; letter-spacing: 0.05em; }
#ammo { font-size: 28px; font-weight: 700; font-variant-numeric: tabular-nums; }
#slots span { display: inline-block; margin-left: 10px; padding: 2px 6px; border: 1px solid #3a434b; color: var(--dim); font-size: 11px; }
#slots span.on { border-color: var(--ink); color: var(--ink); }
#slots span.empty { opacity: 0.4; }
#cross { left: 50%; top: 50%; width: 0; height: 0; }
#cross .dot { position: absolute; left: -2px; top: -2px; width: 4px; height: 4px; background: #fff; border-radius: 50%; box-shadow: 0 0 2px #000; }
/* Round 3: Gears' crosshair: four ticks at the spread, opening with each shot; the hit marker; the active reload. */
#cross { --gap: 8px; }
#cross .t { position: absolute; background: #fff; box-shadow: 0 0 2px rgba(0,0,0,0.9); opacity: 0.85; }
#cross .u, #cross .d { left: -1px; width: 2px; height: 9px; }
#cross .l, #cross .r { top: -1px; width: 9px; height: 2px; }
#cross .u { top: calc(-1 * var(--gap) - 9px); }
#cross .d { top: var(--gap); }
#cross .l { left: calc(-1 * var(--gap) - 9px); }
#cross .r { left: var(--gap); }
#cross.aim .t { opacity: 1; }
#cross.melee .t { opacity: 0.25; }
#hitmark { position: absolute; left: 0; top: 0; opacity: 0; }
#hitmark i { position: absolute; left: -1px; top: -9px; width: 2px; height: 7px; background: #fff; box-shadow: 0 0 2px #000; transform-origin: 1px 9px; }
#hitmark i:nth-child(1) { transform: rotate(45deg) translateY(-6px); }
#hitmark i:nth-child(2) { transform: rotate(135deg) translateY(-6px); }
#hitmark i:nth-child(3) { transform: rotate(225deg) translateY(-6px); }
#hitmark i:nth-child(4) { transform: rotate(315deg) translateY(-6px); }
#hitmark.on { opacity: 1; }
#hitmark.kill i { background: #ff3b30; height: 10px; top: -12px; transform-origin: 1px 12px; }
#areload { position: fixed; left: calc(50% + 40px); top: calc(50% + 34px); width: 150px; height: 7px; background: rgba(0,0,0,0.55); border: 1px solid rgba(255,255,255,0.45); }
#areload .zone { position: absolute; top: 0; bottom: 0; background: rgba(255,255,255,0.75); }
#areload .cur { position: absolute; top: -4px; width: 2px; height: 15px; background: #ffd23f; box-shadow: 0 0 4px #ffd23f; }
#areload .say { position: absolute; left: 0; top: 11px; font: 700 11px/1 system-ui, sans-serif; letter-spacing: 0.12em; color: #fff; text-shadow: 0 1px 2px #000; }
#areload.ok .zone { background: #ffd23f; }
#areload.ok .say { color: #ffd23f; }
#areload.bad .zone { background: #ff3b30; }
#areload.bad .say { color: #ff6a60; }
#sandbox { position: fixed; left: 18px; bottom: 18px; max-width: 380px; padding: 10px 12px; background: rgba(8,10,12,0.72); border: 1px solid rgba(255,255,255,0.12); border-radius: 6px; font: 12px/1.5 system-ui, sans-serif; color: #dfe6ea; pointer-events: none; }
#sandbox b { color: #fff; }
#sandbox .stats { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 6px; font-size: 13px; }
#sandbox .keys { color: #9fb0b8; }
#sandbox .keys kbd { display: inline-block; min-width: 14px; padding: 0 4px; margin-right: 3px; border: 1px solid rgba(255,255,255,0.3); border-radius: 3px; font: 600 11px/16px system-ui, sans-serif; color: #fff; text-align: center; }
#tune { position: fixed; right: 18px; top: 60px; width: 300px; padding: 10px 12px; background: rgba(8,10,12,0.86); border: 1px solid rgba(255,255,255,0.15); border-radius: 6px; font: 12px/1.4 system-ui, sans-serif; color: #dfe6ea; pointer-events: auto; }
#tune h3 { margin: 0 0 6px; font-size: 13px; }
#tune label { display: grid; grid-template-columns: 110px 1fr 38px; gap: 6px; align-items: center; margin: 3px 0; }
#tune input[type=range] { width: 100%; }
#tune button { margin-top: 8px; margin-right: 6px; }
#prompt { left: 50%; top: 56%; transform: translateX(-50%); background: rgba(0,0,0,0.55); padding: 6px 12px; border: 1px solid #3a434b; font-size: 13px; }
#prompt:empty { display: none; }
#hint { left: 50%; top: 62%; transform: translateX(-50%); color: var(--dim); font-size: 12px; letter-spacing: 0.05em; }
#toasts { left: 50%; bottom: 90px; transform: translateX(-50%); display: flex; flex-direction: column-reverse; gap: 6px; align-items: center; }
.toast { background: rgba(10,12,16,0.8); border: 1px solid #3a434b; padding: 8px 14px; font-size: 14px; transition: opacity 0.4s; white-space: nowrap; }
.toast.good { border-color: var(--good); } .toast.bad { border-color: var(--bad); color: #ffb3b3; }
.toast.out { opacity: 0; }
#vignette { inset: 0; background: radial-gradient(ellipse at center, transparent 45%, rgba(140,0,0,0.75) 100%); opacity: 0; transition: opacity 0.15s; }
#screen { position: fixed; inset: 0; display: grid; place-items: center; background: rgba(3,4,6,0.78); cursor: default; overflow: auto; }
.card { width: min(760px, 92vw); background: #0d1117; border: 1px solid #2a323a; padding: 32px 36px; }
.card h1 { margin: 0 0 8px; font-size: 44px; letter-spacing: 0.3em; font-weight: 800; }
.card h1.good { color: var(--good); } .card h1.bad { color: var(--bad); }
.card .lede { font-size: 16px; color: #cfd6dc; }
.card .cols { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin: 16px 0; }
.card h3 { margin: 0 0 4px; font-size: 12px; letter-spacing: 0.2em; color: var(--dim); text-transform: uppercase; }
.card .cols p { margin: 0; color: #cfd6dc; }
.card .small { color: var(--dim); font-size: 13px; }
.card button { background: var(--ink); color: #000; border: 0; padding: 12px 22px; font: inherit; font-weight: 700; letter-spacing: 0.1em; cursor: pointer; margin-top: 12px; }
.card button:disabled { opacity: 0.35; cursor: default; }
.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px 16px; margin: 14px 0; font-size: 15px; }
.stats b { font-size: 22px; }
.skills { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.skill { display: flex; justify-content: space-between; align-items: center; gap: 8px; border: 1px solid #2a323a; padding: 8px 12px; }
.skill small { color: var(--dim); }
.skill .lvl { color: var(--amber); letter-spacing: 0.1em; }
.skill button { margin: 0; padding: 6px 12px; }
/* Round 2: the radar, the pause menu. */
#radar { left: 20px; top: 20px; }
#radar.big { left: 50%; top: 50%; transform: translate(-50%, -50%); }
#radar canvas { display: block; }
.settings { display: grid; gap: 12px; margin: 18px 0; }
.settings label { display: grid; grid-template-columns: 1fr 200px 48px; align-items: center; gap: 12px; font-size: 15px; }
.settings input[type=checkbox] { justify-self: start; width: 20px; height: 20px; }
.settings output { color: var(--dim); font-variant-numeric: tabular-nums; }
.card button.ghost { background: transparent; color: var(--ink); border: 1px solid #3a434b; }
.card .cols { grid-template-columns: repeat(3, 1fr); }

/* The sandbox: no trapped people to count, no health that matters. */
body.sandbox #people, body.sandbox #vitals { display: none; }

/* Round 4: the shot's flash, fear, hiding. */
#flash { inset: 0; opacity: 0; mix-blend-mode: screen; }
#fear { inset: -6%; opacity: 0; background: radial-gradient(ellipse at center, transparent 38%, rgba(18,0,0,0.55) 62%, rgba(8,0,0,0.92) 100%); transform-origin: 50% 50%; }
#under { inset: 0; }
#under.desk { background: linear-gradient(to bottom, rgba(3,3,4,0.96) 0, rgba(3,3,4,0.75) 11%, rgba(3,3,4,0.0) 26%), linear-gradient(to top, rgba(3,3,4,0.7) 0, transparent 14%); }
#under.bed { background: linear-gradient(to bottom, rgba(3,3,4,0.98) 0, rgba(3,3,4,0.85) 18%, rgba(3,3,4,0.0) 36%), linear-gradient(to top, rgba(3,3,4,0.75) 0, transparent 16%); }
#breath { left: 50%; bottom: 120px; width: 180px; margin-left: -90px; height: 5px; background: rgba(255,255,255,0.12); border-radius: 3px; }
#breath i { display: block; height: 100%; width: 100%; background: rgba(220,232,240,0.7); border-radius: 3px; }
#breath span { position: absolute; top: 9px; left: 0; right: 0; text-align: center; font-size: 11px; letter-spacing: 0.2em; text-transform: uppercase; color: rgba(255,255,255,0.45); }
#breath.held i { background: #9fd0ff; }
#breath.low i { background: #ff6a5a; }
#sandbox .hid { color: #9fd0ff; }