/* DRIFTZERO public judge surface.
 *
 * Shares the product's token names with the worker surface so the two read as one
 * system, but this is a marketing-adjacent page rather than something used one-handed
 * next to a conveyor, so it is denser and quieter than the frontline UI.
 *
 * No web fonts, no third-party CSS, no script. The Content-Security-Policy this service
 * sends is restrictive precisely because nothing here needs a wider one.
 */

:root {
  --bg: #070a10;
  --panel: #0d131c;
  --panel-2: #111926;
  --line: #1e2a3a;
  --text: #dbe6f2;
  --muted: #8b9cb2;
  --dim: #56687e;
  --cyan: #35e0d0;
  --green: #46d67f;
  --amber: #f0b13a;
  --red: #ff5f6b;
  --violet: #8b7dfb;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
  --mono: ui-monospace, "SF Mono", "Cascadia Mono", Menlo, Consolas, monospace;
  --wrap: 1080px;
  --radius: 14px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.62;
  -webkit-font-smoothing: antialiased;
}

body { overflow-x: hidden; }

a { color: var(--cyan); text-decoration: none; }
a:hover { text-decoration: underline; }
code { font-family: var(--mono); font-size: 0.92em; color: var(--cyan); word-break: break-word; }

/* ------------------------------------------------------------------ chrome */

.bar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  gap: 22px;
  padding: 14px 24px;
  background: rgba(7, 10, 16, 0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}

.brand {
  font-weight: 800;
  letter-spacing: 0.14em;
  color: var(--text);
  font-size: 15px;
}

.bar nav { display: flex; gap: 18px; margin-left: auto; flex-wrap: wrap; }
.bar nav a { color: var(--muted); font-size: 14px; }
.bar nav a.on { color: var(--cyan); }
.bar .gh {
  font-size: 13px;
  padding: 6px 13px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--text);
}
.bar .gh:hover { border-color: var(--cyan); text-decoration: none; }

main { max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }

section { padding: 56px 0; border-bottom: 1px solid var(--line); }
section:last-child { border-bottom: 0; }

h1 { font-size: clamp(38px, 7vw, 66px); line-height: 1.04; letter-spacing: -0.03em; margin: 0 0 14px; }
h2 { font-size: clamp(22px, 3.4vw, 30px); line-height: 1.2; letter-spacing: -0.02em; margin: 0 0 16px; }
h3 { font-size: 16px; text-transform: uppercase; letter-spacing: 0.1em; color: var(--muted); margin: 26px 0 8px; }
p { margin: 0 0 14px; color: var(--muted); max-width: 68ch; }
p.lead { font-size: 19px; color: var(--text); }
p.note { font-size: 14px; color: var(--dim); border-left: 2px solid var(--line); padding-left: 14px; }

/* -------------------------------------------------------------------- hero */

.hero { padding: 76px 0 60px; border-bottom: 1px solid var(--line); }
.hero h1 { letter-spacing: 0.02em; font-weight: 800; }
.hero .tag { font-size: clamp(19px, 2.8vw, 25px); color: var(--text); font-weight: 600; margin-bottom: 22px; }
.hero blockquote {
  margin: 0 0 26px;
  padding: 18px 22px;
  border-left: 3px solid var(--cyan);
  background: var(--panel);
  border-radius: 0 var(--radius) var(--radius) 0;
  color: var(--text);
  font-size: 17px;
}

.cta { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 22px; }
.btn {
  display: inline-block;
  padding: 12px 20px;
  border: 1px solid var(--line);
  border-radius: 10px;
  color: var(--text);
  font-size: 15px;
  font-weight: 600;
  background: var(--panel);
}
.btn:hover { border-color: var(--cyan); text-decoration: none; }
.btn.primary { background: var(--cyan); color: #04131a; border-color: var(--cyan); }
.btn.primary:hover { filter: brightness(1.1); }

/* ------------------------------------------------------------ status chip */

.chip {
  display: inline-grid;
  grid-template-columns: auto 1fr;
  gap: 2px 10px;
  align-items: start;
  padding: 13px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  margin: 6px 0;
  max-width: 640px;
}
.chip .dot { width: 9px; height: 9px; border-radius: 50%; margin-top: 8px; grid-row: 1 / span 3; }
.chip.ok .dot { background: var(--green); box-shadow: 0 0 12px var(--green); }
.chip.warn .dot { background: var(--amber); box-shadow: 0 0 12px var(--amber); }
.chip b { font-size: 14px; letter-spacing: 0.04em; }
.chip.ok b { color: var(--green); }
.chip.warn b { color: var(--amber); }
.chip i { font-style: normal; font-size: 13px; color: var(--muted); }
.chip u { text-decoration: none; font-size: 12px; color: var(--dim); font-family: var(--mono); }

/* -------------------------------------------------------------------- flow */

.flow { list-style: none; display: grid; gap: 10px; padding: 0; margin: 0 0 22px; }
@media (min-width: 860px) { .flow { grid-template-columns: repeat(5, 1fr); } }

.flow .stage {
  padding: 16px 14px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  border-top: 2px solid var(--violet);
}
.flow .stage:last-child { border-top-color: var(--green); }
.flow .stage .n {
  display: inline-block;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--dim);
  margin-bottom: 6px;
}
.flow .stage b { display: block; font-size: 13px; letter-spacing: 0.06em; margin-bottom: 6px; }
.flow .stage i { font-style: normal; font-size: 13px; color: var(--muted); line-height: 1.45; }

/* --------------------------------------------------------------- topology */

.topology { display: grid; gap: 8px; margin: 0 0 22px; max-width: 620px; }
.tier {
  padding: 15px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  display: grid;
  gap: 3px;
}
.tier b { font-size: 15px; font-family: var(--mono); }
.tier span { font-size: 13px; color: var(--muted); }
.tier.public { border-left: 3px solid var(--muted); }
.tier.web { border-left: 3px solid var(--green); }
.tier.api { border-left: 3px solid var(--amber); }
.tier.data { border-left: 3px solid var(--violet); }
.tier .tag-on { color: var(--green); font-weight: 600; }
.tier .tag-off { color: var(--amber); font-family: var(--mono); font-size: 12px; }
.arrow { color: var(--dim); font-size: 14px; padding-left: 18px; }
.arrow em { font-style: normal; font-size: 12px; font-family: var(--mono); }

/* ------------------------------------------------------------------ tables */

.grid { width: 100%; border-collapse: collapse; margin: 0 0 16px; font-size: 14px; }
.grid th {
  text-align: left;
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--dim);
  padding: 8px 12px;
  border-bottom: 1px solid var(--line);
  font-weight: 600;
}
.grid td { padding: 10px 12px; border-bottom: 1px solid var(--line); color: var(--muted); vertical-align: top; }
.grid tr:last-child td { border-bottom: 0; }
.grid td:first-child { color: var(--text); }
.grid.stack td:first-child { font-weight: 600; white-space: nowrap; }
.grid.wide { background: var(--panel); border-radius: var(--radius); overflow: hidden; }
.grid.wide th { background: var(--panel-2); }
.grid td.pass { color: var(--green); font-weight: 700; }
.grid td.fail { color: var(--red); font-weight: 700; }
.grid.proof td:first-child { width: 40%; white-space: nowrap; }

.hash {
  font-family: var(--mono);
  font-size: 13px;
  word-break: break-all;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px 16px;
  max-width: none;
}

/* --------------------------------------------------------------- galleries */

.shots { display: grid; gap: 18px; }
@media (min-width: 720px) {
  .shots.two   { grid-template-columns: repeat(2, 1fr); }
  .shots.three { grid-template-columns: repeat(3, 1fr); }
  .shots.four  { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1020px) { .shots.four { grid-template-columns: repeat(4, 1fr); } }

.shots figure { margin: 0; background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.shots img { display: block; width: 100%; height: auto; background: #000; }
.shots figcaption { padding: 13px 15px; font-size: 13px; color: var(--muted); line-height: 1.5; }
.shots figcaption b { display: block; color: var(--text); font-size: 14px; margin-bottom: 4px; }

/* ----------------------------------------------------------------- layouts */

.split { display: grid; gap: 40px; }
@media (min-width: 900px) { .split { grid-template-columns: 1fr 1fr; gap: 52px; } }

.page-head { padding-top: 60px; }

.callout { background: var(--panel); border-radius: var(--radius); padding: 30px 28px; border: 1px solid var(--line); }
.callout p.deny { color: var(--text); border-left: 3px solid var(--amber); padding-left: 14px; }

.closing { text-align: left; }
.closing h2 { font-size: clamp(21px, 3.2vw, 30px); color: var(--text); }

/* ------------------------------------------------------------------ footer */

footer { max-width: var(--wrap); margin: 0 auto; padding: 40px 24px 64px; border-top: 1px solid var(--line); }
footer p { font-size: 14px; margin-bottom: 10px; }
footer .fine { font-size: 13px; color: var(--dim); max-width: 78ch; }

/* Nothing on this page depends on hover, and everything reflows to a phone. */
@media (max-width: 560px) {
  .bar { gap: 12px; padding: 12px 16px; }
  .bar nav { gap: 12px; }
  main, footer { padding-left: 16px; padding-right: 16px; }
  section { padding: 40px 0; }
}

/* ---------------------------------------------------------------- live pilot */

/* Progress that can only move when the backend says so. There is no animation here
 * on purpose: an indeterminate spinner that advances on a timer would be the one
 * dishonest element on a page about proving what actually happened. */
.steps { list-style: none; padding: 0; margin: 22px 0; display: grid; gap: 8px; }
.steps .step {
  display: grid;
  grid-template-columns: 28px 1fr;
  gap: 2px 10px;
  align-items: start;
  padding: 12px 15px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
}
.steps .step .tick { grid-row: 1 / span 2; font-size: 17px; line-height: 1.3; }
.steps .step.done { border-left: 3px solid var(--green); }
.steps .step.done .tick { color: var(--green); }
.steps .step.pending { opacity: 0.55; }
.steps .step.pending .tick { color: var(--dim); }
.steps .step b { font-size: 15px; }
.steps .step i { font-style: normal; font-size: 13px; color: var(--muted); }

.flow-list { color: var(--muted); padding-left: 22px; margin: 0 0 22px; max-width: 68ch; }
.flow-list li { margin-bottom: 9px; }
.flow-list b { color: var(--text); }

.btn.big { font-size: 17px; padding: 15px 26px; }
.hint { display: block; font-size: 13px; color: var(--dim); margin-top: 9px; max-width: 56ch; }

/* The delta. This is the whole worker-facing product in one card, so it is the
 * largest, calmest thing on the page. */
.delta-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-left: 3px solid var(--cyan);
  border-radius: var(--radius);
  padding: 24px 22px;
}
.delta-label {
  display: block;
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--dim);
  margin-bottom: 14px;
}
.delta-pair { display: flex; align-items: center; gap: 20px; flex-wrap: wrap; }
.delta-pair u { display: block; text-decoration: none; font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--dim); margin-bottom: 3px; }
.delta-pair b { font-size: clamp(22px, 5vw, 32px); letter-spacing: -0.01em; }
.delta-pair .was b { color: var(--muted); text-decoration: line-through; text-decoration-thickness: 2px; }
.delta-pair .now b { color: var(--green); }
.delta-pair .arrow-x { font-size: 26px; color: var(--dim); }
.delta-meta { display: block; margin-top: 18px; font-size: 13px; color: var(--dim); }

.verify-form { margin: 18px 0 26px; }

details.upload { border: 1px solid var(--line); border-radius: var(--radius); padding: 14px 16px; background: var(--panel); }
details.upload summary { cursor: pointer; font-size: 14px; color: var(--muted); }
details.upload form { margin-top: 14px; display: grid; gap: 12px; justify-items: start; }
details.upload input[type=file] { color: var(--muted); font-size: 14px; max-width: 100%; }

/* Verdicts. Colour carries the outcome, but the words carry it too — a verdict must
 * never depend on a viewer distinguishing red from green. */
.verdict h1 { letter-spacing: -0.02em; }
.verdict.ok h1 { color: var(--green); }
.verdict.fail h1 { color: var(--red); }
.verdict.warn h1 { color: var(--amber); }

.observed {
  display: grid;
  gap: 3px;
  padding: 15px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  margin-top: 18px;
  max-width: 520px;
}
.observed u { text-decoration: none; font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--amber); }
.observed b { font-size: 16px; }
.observed i { font-style: normal; font-size: 14px; color: var(--muted); }
.observed span { font-size: 12px; color: var(--dim); font-family: var(--mono); }

.chronology { list-style: none; padding: 0; margin: 0 0 14px; display: grid; gap: 6px; max-width: 420px; }
.chronology li { padding: 10px 14px; border: 1px solid var(--line); border-radius: 10px; background: var(--panel); font-size: 14px; color: var(--muted); }
.chronology li.pass { border-left: 3px solid var(--green); }
.chronology li.pass b { color: var(--green); }
.chronology li.fail { border-left: 3px solid var(--red); }
.chronology li.fail b { color: var(--red); }

.integrity { padding: 14px 16px; border-radius: var(--radius); border: 1px solid var(--line); background: var(--panel); max-width: none; }
.integrity.ok { border-left: 3px solid var(--green); }
.integrity.ok b { color: var(--green); }
.integrity.warn { border-left: 3px solid var(--amber); }
.integrity.warn b { color: var(--amber); }

/* The frontline case is a phone held in one hand. */
@media (max-width: 560px) {
  .delta-pair { gap: 12px; }
  .delta-pair .arrow-x { transform: rotate(90deg); }
  .btn.big { width: 100%; text-align: center; }
}

/* Two ways to submit evidence, both visible. A retry a worker cannot find on a phone
 * is a retry that does not exist, so neither path hides behind a disclosure control. */
.or {
  display: flex;
  align-items: center;
  gap: 14px;
  margin: 22px 0;
  color: var(--dim);
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  max-width: 560px;
}
.or::before, .or::after { content: ""; flex: 1; height: 1px; background: var(--line); }

.retry-upload {
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  max-width: 560px;
  display: grid;
  gap: 12px;
  justify-items: start;
}
.file-label { font-size: 14px; font-weight: 600; color: var(--text); }
.retry-upload input[type=file] {
  color: var(--muted);
  font-size: 14px;
  max-width: 100%;
  padding: 10px 0;
}
/* A tap target the size of a gloved thumb, on the control that matters most. */
.retry-upload input[type=file]::file-selector-button {
  background: var(--panel-2);
  color: var(--text);
  border: 1px solid var(--line);
  border-radius: 9px;
  padding: 11px 16px;
  margin-right: 12px;
  font-size: 14px;
  font-family: inherit;
  cursor: pointer;
}
.retry-upload input[type=file]::file-selector-button:hover { border-color: var(--cyan); }

@media (max-width: 560px) {
  .retry-upload { padding: 15px 16px; }
  .retry-upload .btn { width: 100%; text-align: center; }
}