/* R84-RACE: Return 84 Amazing Race, August 2026. One-off event code.
   After the event: delete the r84-AmazingRace branch of
   wenweia/temporary-static-projects and the vets-deploy stack at
   stacks/r84-race/. Search-tag: R84-RACE.

   Cirrus: high, thin, wispy ice cloud. The whole motif is a pale sky gradient
   plus a few soft white streaks, done with linear-gradients on one fixed
   layer. There is deliberately NO animation anywhere - not even a
   reduced-motion-gated one. This runs on phones for four hours and an
   animated background is the easiest way to spend someone's battery for
   nothing. backdrop-filter, large blur filters and feTurbulence are rejected
   for the same reason. Whitespace and big tap targets do the work instead. */

:root {
  --sky-1: #dceaf7;
  --sky-2: #f4f9fd;
  --ink: #1e2b38;
  --ink-soft: #56697d;
  --line: #c9dced;
  --card: #ffffffcc;
  --accent: #2f6f9f;
  --ok: #1f7a4d;
  --bad: #a3352f;
  --warn: #8a5a1b;
  --radius: 14px;
  --pad: clamp(1rem, 3vw, 1.75rem);
}

@media (prefers-color-scheme: dark) {
  :root {
    --sky-1: #0f1922;
    --sky-2: #16232f;
    --ink: #e7eef5;
    --ink-soft: #9db0c2;
    --line: #2a3b4c;
    --card: #16232fcc;
    --accent: #7fb8e0;
    --ok: #57c08a;
    --bad: #e2857f;
    --warn: #d9ab63;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font: 16px/1.55 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color: var(--ink);
  background: var(--sky-2);
  padding-bottom: 4rem;
}

/* The cirrus. Three soft diagonal streaks on one fixed layer, so it never
   repaints on scroll. */
.sky {
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(102deg, transparent 18%, #fff6 22%, transparent 27%),
    linear-gradient(97deg, transparent 42%, #fff4 46%, transparent 52%),
    linear-gradient(107deg, transparent 66%, #fff5 69%, transparent 74%),
    linear-gradient(170deg, var(--sky-1), var(--sky-2) 60%);
}

@media (prefers-color-scheme: dark) {
  .sky {
    background:
      linear-gradient(102deg, transparent 18%, #ffffff14 22%, transparent 27%),
      linear-gradient(97deg, transparent 42%, #ffffff0e 46%, transparent 52%),
      linear-gradient(107deg, transparent 66%, #ffffff12 69%, transparent 74%),
      linear-gradient(170deg, var(--sky-1), var(--sky-2) 60%);
  }
}

header { text-align: center; padding: var(--pad) 1rem 0.5rem; }
h1 { margin: 0; font-size: clamp(1.9rem, 6vw, 3rem); font-weight: 300;
     letter-spacing: 0.02em; }
.sub { margin: 0.2rem 0 0; color: var(--ink-soft); letter-spacing: 0.08em;
       text-transform: uppercase; font-size: 0.78rem; }
.countdown { margin: 0.9rem 0 0; font-variant-numeric: tabular-nums;
             color: var(--accent); font-weight: 600; }

main { max-width: 46rem; margin: 0 auto; padding: var(--pad); }
h2 { font-weight: 400; font-size: 1.5rem; margin-top: 2rem; }
h3 { font-weight: 500; font-size: 1.1rem; margin-top: 1.6rem; }
footer { text-align: center; color: var(--ink-soft); font-size: 0.85rem; }
a { color: var(--accent); }

section { margin-bottom: 1.5rem; }
.note { color: var(--ink-soft); font-size: 0.92rem; }
.empty { color: var(--ink-soft); font-style: italic; }
.opt { color: var(--ink-soft); font-weight: 400; font-size: 0.85em; }
.error { color: var(--bad); font-weight: 500; }
.waiting { text-align: center; color: var(--ink-soft); padding: 2rem 0; }

/* forms -------------------------------------------------------------- */
label { display: block; margin: 1rem 0 0; font-weight: 500; }
label.check { font-weight: 400; }
input, select, textarea, button {
  font: inherit; color: inherit;
}
input[type=text], input[type=password], input[type=url], input[type=file],
input:not([type]), select, textarea {
  width: 100%; margin-top: 0.3rem; padding: 0.7rem 0.8rem;
  border: 1px solid var(--line); border-radius: 10px;
  background: var(--card);
}
input[type=checkbox] { width: auto; margin-right: 0.4rem; }
button {
  margin-top: 1rem; padding: 0.75rem 1.3rem; border: 0; border-radius: 10px;
  background: var(--accent); color: #fff; font-weight: 600; cursor: pointer;
  min-height: 44px;                       /* comfortable on a phone */
}
button:disabled { opacity: 0.55; cursor: default; }
button.tiny { min-height: 0; padding: 0.3rem 0.6rem; font-size: 0.8rem;
              margin: 0 0 0 0.3rem; }
button.ok { background: var(--ok); }
button.no, button.tiny.no { background: var(--bad); }

.help { margin-top: 1rem; border: 1px solid var(--line); border-radius: 10px;
        padding: 0.6rem 0.9rem; background: var(--card); }
.help summary { cursor: pointer; font-weight: 500; }
.help ol { padding-left: 1.2rem; }
.hiatus { margin-top: 1.2rem; padding: 1rem; border-radius: var(--radius);
          border: 1px solid var(--warn); }

/* people -------------------------------------------------------------- */
.people { display: grid; gap: 0.6rem;
          grid-template-columns: repeat(auto-fill, minmax(15rem, 1fr)); }
.person { display: flex; gap: 0.7rem; align-items: center; padding: 0.6rem;
          background: var(--card); border: 1px solid var(--line);
          border-radius: var(--radius); }
.person img, .avatar-fallback {
  width: 48px; height: 48px; border-radius: 8px; image-rendering: pixelated;
  flex: 0 0 auto;
}
.avatar-fallback { display: grid; place-items: center; background: var(--line);
                   font-weight: 700; color: var(--ink-soft); }
.person-name { font-weight: 600; }
.person-meta { display: flex; gap: 0.4rem; align-items: center;
               flex-wrap: wrap; margin-top: 0.15rem; }
.badge { background: var(--accent); color: #fff; border-radius: 6px;
         padding: 0.05rem 0.4rem; font-size: 0.72rem; font-weight: 700;
         letter-spacing: 0.04em; }
.did { font-size: 0.78rem; color: var(--ink-soft); cursor: pointer;
       word-break: break-all; }
.did.copied::after { content: " copied"; color: var(--ok); }
.pill { background: var(--line); color: var(--ink-soft); border-radius: 999px;
        padding: 0.1rem 0.55rem; font-size: 0.75rem; margin-left: 0.5rem;
        font-weight: 600; }

.team-card { background: var(--card); border: 1px solid var(--line);
             border-radius: var(--radius); padding: 1rem; margin-bottom: 1rem; }
.team-card h3 { margin-top: 0; }

/* chat ---------------------------------------------------------------- */
#chat { height: 15rem; overflow-y: auto; padding: 0.7rem;
        background: var(--card); border: 1px solid var(--line);
        border-radius: var(--radius); display: flex;
        flex-direction: column; gap: 0.35rem; }
.msg { font-size: 0.94rem; word-wrap: break-word; }
.msg .who { font-weight: 700; margin-right: 0.4rem; }
.msg.system { color: var(--ink-soft); font-style: italic; }
.msg.staff { color: var(--warn); font-weight: 600; }
#chat-form { display: flex; gap: 0.5rem; align-items: stretch; }
#chat-form input { margin-top: 0.5rem; }
#chat-form button { margin-top: 0.5rem; flex: 0 0 auto; }

/* tasks --------------------------------------------------------------- */
.task { background: var(--card); border: 1px solid var(--line);
        border-radius: var(--radius); padding: 1rem; margin-bottom: 1rem; }
.task h4 { margin: 0 0 0.5rem; font-size: 1.05rem; }
.task.done { opacity: 0.75; }
.clue { font-size: 1.02rem; }
.hint { background: var(--line); border-radius: 8px; padding: 0.5rem 0.7rem; }
.hint-btn { background: transparent; color: var(--accent);
            border: 1px dashed var(--accent); margin-right: 0.5rem; }
.challenge { font-weight: 600; }
.bonus { color: var(--warn); font-weight: 600; }
.reason { color: var(--bad); font-weight: 500; }
.pending { color: var(--ink-soft); font-style: italic; }
.ok { color: var(--ok); font-weight: 600; }
.upload { margin-top: 0.8rem; display: grid; gap: 0.5rem; }
.up-label { margin: 0; font-weight: 500; }
.up-status { margin: 0; color: var(--ink-soft); font-size: 0.9rem; }
.up-note { margin: 0; color: var(--ink-soft); font-size: 0.85rem; }

/* staff --------------------------------------------------------------- */
body.staff { background: var(--sky-2); }
body.staff main { max-width: 62rem; }
.staffnav { display: flex; gap: 1rem; flex-wrap: wrap; padding: 0.8rem var(--pad);
            border-bottom: 1px solid var(--line); background: var(--card); }
.staffnav a { font-weight: 600; text-decoration: none; }
.card { background: var(--card); border: 1px solid var(--line);
        border-radius: var(--radius); padding: 1rem; margin-bottom: 1.2rem; }
.card img { max-width: 100%; border-radius: 8px; border: 1px solid var(--line); }
/* A submission's screenshots, judged as one set. Side by side so a reviewer
   takes them in at a glance rather than scrolling a column. */
.shots { display: grid; gap: 0.5rem; margin: 0.5rem 0;
         grid-template-columns: repeat(auto-fit, minmax(13rem, 1fr)); }
.shots img { width: 100%; display: block; }
.card h2 { margin-top: 0; font-size: 1.15rem; }
.kind { background: var(--warn); color: #fff; border-radius: 6px;
        padding: 0.05rem 0.45rem; font-size: 0.72rem; margin-left: 0.4rem; }
.answer { background: var(--line); border-radius: 8px; padding: 0.5rem 0.7rem; }
.meta { color: var(--ink-soft); font-size: 0.85rem; margin: 0.2rem 0; }
.count { background: var(--bad); color: #fff; border-radius: 999px;
         padding: 0.1rem 0.6rem; font-size: 0.9rem; }
.actions { display: flex; gap: 1rem; flex-wrap: wrap; align-items: flex-end; }
.actions form { display: flex; gap: 0.4rem; align-items: center;
                flex-wrap: wrap; }
.actions input { width: auto; min-width: 14rem; }
form.inline { display: inline-flex; gap: 0.4rem; align-items: center;
              flex-wrap: wrap; margin-right: 0.6rem; }
form.inline input, form.inline select { width: auto; margin-top: 0; }
form.inline button { margin-top: 0; }
.bonus { display: inline-flex; align-items: center; gap: 0.3rem; }
.members { list-style: none; padding: 0; }
.members li { padding: 0.35rem 0; border-bottom: 1px solid var(--line);
              display: flex; gap: 0.4rem; align-items: center;
              flex-wrap: wrap; }
table.people, table.score { width: 100%; border-collapse: collapse;
                            font-size: 0.9rem; }
table.people td, table.people th, table.score td, table.score th {
  padding: 0.4rem 0.5rem; border-bottom: 1px solid var(--line);
  text-align: left; vertical-align: top;
}
tr.pending td { background: #d9ab631f; }
.pending, b.pending { color: var(--warn); }
textarea { font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
           font-size: 0.85rem; }
.nolink { color: var(--ink-soft); font-style: italic; }

/* Wide content scrolls inside itself; the page body never scrolls sideways. */
table, pre { display: block; max-width: 100%; overflow-x: auto; }