/* LIFEBOAT · night sea in petrol teal, signal yellow, sea foam. Stencil like hull markings. */
:root {
  --deep: #05181d;
  --sea: #0b3b45;
  --sea-2: #11505b;
  --sea-3: #1a6470;
  --foam: #e9f3ef;
  --foam-2: #d6e7e1;
  --foam-3: #bcd6cd;
  --ink: #0b3b45;
  --muted: #4f7279;
  --line: #bcd6cd;
  --accent: #e0a800;
  --signal: #ffd23f;
  --signal-ink: #251d00;
  --ok: #1f8a63;
  --bad: #e2533d;
  --coral: #ff6f59;
  --stencil: "Saira Stencil One", Impact, sans-serif;
  --body: "Atkinson Hyperlegible", system-ui, sans-serif;
  --mono: "DM Mono", ui-monospace, Consolas, monospace;
  color-scheme: light;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
body { margin: 0; background: var(--foam); color: var(--ink); font: 16px/1.55 var(--body); }
a { color: inherit; }
code { font-family: var(--mono); font-size: .9em; }
.muted { color: var(--muted); }
.small { font-size: 13.5px; }
.r { text-align: right; }
.wrap { width: min(1160px, 100% - 40px); margin-inline: auto; }
:focus-visible { outline: 3px solid var(--signal); outline-offset: 2px; }

/* ------------------------------------------------------------ hero: night sea */
.hero { position: relative; min-height: min(92vh, 860px); display: flex; flex-direction: column; color: var(--foam); background: var(--deep); overflow: hidden; }
#sea { position: absolute; inset: 0; width: 100%; height: 100%; display: block; }
.hero__shade { position: absolute; inset: 0; background: linear-gradient(90deg, rgba(5, 24, 29, .88) 0%, rgba(5, 24, 29, .55) 42%, rgba(5, 24, 29, 0) 70%), linear-gradient(0deg, rgba(5, 24, 29, .85), transparent 38%); pointer-events: none; }
.top, .hero__body, .gauges { position: relative; z-index: 1; }

.top { display: flex; align-items: center; justify-content: space-between; padding: 24px 0; }
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; font: 24px var(--stencil); letter-spacing: .08em; color: var(--foam); }
.ring { width: 34px; height: 34px; color: var(--signal); }
.top__links { display: flex; gap: 22px; font: 500 13px var(--mono); letter-spacing: .1em; text-transform: uppercase; }
.top__links a { text-decoration: none; color: #a9c8c6; }
.top__links a:hover { color: var(--signal); }

.hero__body { margin-top: auto; padding-top: 40px; }
.hero__body > * { max-width: 760px; }
.kicker { margin: 0 0 14px; font: 500 12.5px var(--mono); letter-spacing: .2em; text-transform: uppercase; color: var(--signal); }
.verdict-row { display: flex; align-items: center; gap: 22px; }
#verdict { margin: 0; font: clamp(54px, 9vw, 124px)/.9 var(--stencil); letter-spacing: .01em; text-transform: uppercase; animation: rise .9s cubic-bezier(.2, .7, .2, 1) both; }
#verdict .ok { color: var(--signal); }
#verdict .bad { color: var(--coral); }
.hero__meta { margin: 16px 0 0; font: 13px var(--mono); color: #a9c8c6; letter-spacing: .04em; }
.hero__lead { margin: 18px 0 0; max-width: 560px; font-size: 17.5px; color: #cfe2dc; }
@keyframes rise { from { opacity: 0; transform: translateY(16px); } }

/* International Code of Signals: C = "affirmative", N = "negative" */
.flag { flex: none; position: relative; width: 74px; height: 50px; border: 1px solid rgba(0, 0, 0, .2); transform-origin: left center; animation: flutter 3.2s ease-in-out infinite; }
.flag::before { content: ""; position: absolute; left: -6px; top: -10px; bottom: -26px; width: 3px; background: #c9d9d6; }
.flag--c { background: linear-gradient(#1f4fa3 0 20%, #fff 20% 40%, #d62e2e 40% 60%, #fff 60% 80%, #1f4fa3 80%); }
.flag--n { background: repeating-conic-gradient(#1f4fa3 0 25%, #fff 0 50%) 0 0 / 50% 50%; }
@keyframes flutter { 50% { transform: skewY(-3deg) scaleX(.96); } }

.gauges { display: grid; grid-template-columns: repeat(5, 1fr); margin: 46px auto 0; padding: 18px 0 30px; border-top: 1px solid rgba(233, 243, 239, .25); }
.gauges div { padding-right: 16px; }
.gauges div + div { padding-left: 16px; border-left: 1px solid rgba(233, 243, 239, .15); }
.gauges dt { font: 500 11px var(--mono); letter-spacing: .14em; text-transform: uppercase; color: #8fb3b2; }
.gauges dd { margin: 6px 0 0; font: 40px/1 var(--stencil); color: var(--foam); font-variant-numeric: tabular-nums; }

/* ------------------------------------------------------------ logbook */
.logbook { padding: 70px 0 30px; background:
  repeating-linear-gradient(180deg, transparent 0 39px, rgba(11, 59, 69, .05) 39px 40px), var(--foam); }
.sec-head { display: flex; align-items: baseline; gap: 18px; flex-wrap: wrap; margin: 0 0 22px; padding-bottom: 12px; border-bottom: 3px solid var(--ink); }
.sec-head + .split, .split + .sec-head, .sheet + .sec-head { margin-top: 0; }
.split + .sec-head { margin-top: 56px; }
.sec-head__no { font: 500 12px var(--mono); letter-spacing: .14em; text-transform: uppercase; color: var(--accent); }
.sec-head h2 { margin: 0; font: clamp(32px, 4.4vw, 48px)/1 var(--stencil); text-transform: uppercase; letter-spacing: .01em; }
.sec-head p { margin: 0 0 0 auto; max-width: 520px; color: var(--muted); font-size: 14.5px; }

.split { display: grid; grid-template-columns: 1.15fr 1fr; gap: 22px; }
.sheet { background: #fff; border: 1px solid var(--line); border-top: 4px solid var(--sea); padding: 22px 24px; min-width: 0; box-shadow: 0 12px 30px rgba(11, 59, 69, .06); }
.sheet h3 { margin: 0 0 12px; font: 22px var(--stencil); text-transform: uppercase; letter-spacing: .02em; }

.steps { list-style: none; margin: 0; padding: 0; counter-reset: s; }
.steps li { display: grid; grid-template-columns: 30px 1fr auto; gap: 12px; padding: 11px 0; border-bottom: 1px dashed var(--line); align-items: start; }
.steps li:last-child { border-bottom: 0; }
.steps .i { width: 26px; height: 26px; border-radius: 50%; display: grid; place-items: center; font: 700 14px var(--body); color: var(--signal-ink); background: var(--signal); box-shadow: 0 0 0 3px #fff, 0 0 0 4px var(--signal); margin-top: 1px; }
.steps .i.bad { background: var(--coral); color: #fff; box-shadow: 0 0 0 3px #fff, 0 0 0 4px var(--coral); }
.steps b { display: block; font-weight: 700; font-size: 15.5px; }
.steps small { display: block; color: var(--muted); font: 12.5px var(--mono); word-break: break-word; margin-top: 2px; }
.steps .t { font: 12.5px var(--mono); color: var(--muted); }
#run-link a { color: var(--sea-3); font-weight: 700; }

.chart svg { width: 100%; height: auto; display: block; }
.chart text { font: 11px var(--mono); fill: var(--muted); }
.runs { list-style: none; margin: 16px 0 0; padding: 0; max-height: 280px; overflow-y: auto; }
.runs li { display: grid; grid-template-columns: 14px 54px 1fr auto; gap: 8px; align-items: center; padding: 7px 0; border-bottom: 1px solid var(--foam-2); font: 13px var(--mono); }
.dot { width: 10px; height: 10px; border-radius: 50%; background: var(--ok); }
.dot.bad { background: var(--coral); }

.table-wrap { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; font-size: 14px; }
th { text-align: left; font: 500 11px var(--mono); text-transform: uppercase; letter-spacing: .1em; color: var(--muted); padding: 9px 10px; border-bottom: 2px solid var(--ink); white-space: nowrap; }
td { padding: 10px; border-bottom: 1px solid var(--foam-2); white-space: nowrap; }
td code { font-size: 12.5px; }
.tag { display: inline-block; font: 500 11px var(--mono); padding: 2px 8px; border-radius: 99px; background: var(--foam-2); margin-right: 4px; }
.tag.latest { background: var(--signal); color: var(--signal-ink); }

/* ------------------------------------------------------------ playground: back to the sea */
.playground { margin-top: 40px; padding: 70px 0 60px; background: radial-gradient(ellipse at 80% 0%, rgba(26, 100, 112, .55), transparent 60%), var(--deep); color: var(--foam); }
.sec-head--dark { border-bottom-color: var(--signal); }
.sec-head--dark .sec-head__no { color: var(--signal); }
.sec-head--dark p { color: #a9c8c6; }
.pg { display: grid; grid-template-columns: 1.3fr 1fr; gap: 20px; margin-bottom: 20px; }
.pg__side { display: grid; gap: 20px; align-content: start; }
.panel { background: rgba(17, 80, 91, .35); border: 1px solid rgba(169, 200, 198, .2); border-radius: 6px; padding: 20px 22px; min-width: 0; }
.panel h3 { margin: 0 0 14px; font: 22px var(--stencil); text-transform: uppercase; letter-spacing: .03em; }
.pg__head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 12px; }
.pg__head h3 { margin: 0; }
.pill { font: 500 11px var(--mono); padding: 4px 10px; border-radius: 99px; background: rgba(233, 243, 239, .12); text-transform: uppercase; letter-spacing: .08em; }
.pill.ok { background: var(--signal); color: var(--signal-ink); }
.pill.bad { background: var(--coral); color: #2a0600; }
.panel table th { color: #8fb3b2; border-bottom-color: rgba(233, 243, 239, .5); }
.panel table td { border-bottom-color: rgba(233, 243, 239, .1); }
.mini { font-size: 14px; }
.mini td, .mini th { padding: 6px 8px; }
.mini td:first-child { font-family: var(--mono); }
.pg__sample h4 { margin: 18px 0 6px; font: 500 12px var(--mono); letter-spacing: .12em; text-transform: uppercase; color: #8fb3b2; }
.btns { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 18px; }
.btns--col { flex-direction: column; margin-top: 0; }
.btns--col .btn { justify-content: flex-start; text-align: left; }
.btn {
  display: inline-flex; align-items: center; gap: 8px; font: 700 15px var(--body); padding: 11px 16px; border-radius: 99px;
  border: 1.5px solid rgba(233, 243, 239, .55); background: transparent; color: var(--foam); cursor: pointer;
  transition: transform .15s ease, background .15s ease;
}
.btn:hover { background: rgba(233, 243, 239, .1); transform: translateY(-1px); }
.btn:disabled { opacity: .4; cursor: not-allowed; transform: none; }
.btn--signal { background: var(--signal); border-color: var(--signal); color: var(--signal-ink); }
.btn--signal:hover { background: #ffdc66; }
.btn--bad { border-color: rgba(255, 111, 89, .6); color: #ffb4a6; }
.btn--bad:hover { background: rgba(255, 111, 89, .14); }
.btn--ok { border-color: var(--signal); color: var(--signal); }
.btn--ok:hover { background: rgba(255, 210, 63, .14); }

.snaps { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 8px; }
.snaps li { display: grid; grid-template-columns: 1fr auto; gap: 4px 10px; align-items: center; padding: 11px 13px; border: 1px solid rgba(169, 200, 198, .22); border-radius: 6px; background: rgba(5, 24, 29, .45); }
.snaps b { font: 500 13.5px var(--mono); }
.snaps small { grid-column: 1; color: #8fb3b2; font: 12px var(--mono); }
.snaps .btn { grid-row: 1 / span 2; grid-column: 2; padding: 7px 12px; font-size: 13.5px; }

.log { margin: 0; min-height: 150px; max-height: 340px; overflow: auto; padding: 16px; background: #02100f; color: #cfe2dc; border-radius: 6px; border-left: 4px solid var(--signal); font: 13px/1.65 var(--mono); white-space: pre-wrap; }
.log .ok { color: var(--signal); }
.log .bad { color: var(--coral); }
.log .head { color: #fff; font-weight: 500; }

.foot { background: var(--deep); color: #8fb3b2; font-size: 14px; border-top: 1px solid rgba(169, 200, 198, .15); }
.foot .wrap { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; padding: 26px 0 36px; }
.foot a { color: var(--foam); }

@media (max-width: 900px) {
  .split, .pg { grid-template-columns: 1fr; }
  .gauges { grid-template-columns: repeat(2, 1fr); row-gap: 16px; }
  .gauges div + div { border-left: 0; padding-left: 0; }
  .gauges div:nth-child(even) { padding-left: 16px; border-left: 1px solid rgba(233, 243, 239, .15); }
  .hero__shade { background: linear-gradient(0deg, rgba(5, 24, 29, .92) 20%, rgba(5, 24, 29, .45) 70%, rgba(5, 24, 29, .2)); }
  .sec-head p { margin-left: 0; }
}
@media (max-width: 560px) {
  .wrap { width: calc(100% - 32px); }
  .top__links { gap: 14px; font-size: 11.5px; }
  .verdict-row { gap: 14px; }
  .flag { width: 52px; height: 36px; }
  .hero__body { padding-top: 58vw; }
  .gauges dd { font-size: 30px; }
  .sheet, .panel { padding: 16px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
}
.chart path:first-of-type { stroke: var(--sea); }