/* The bootstrap page of the relay: one card, light and dark, phone first. No external
   resource: the page must work under a strict CSP. */
:root {
  --bg: #f4f5f7;
  --bg2: #e9ecf1;
  --card: #ffffff;
  --line: #dde1e7;
  --text: #1d2026;
  --muted: #5d6470;
  --accent: #2f6fde;
  --accent-text: #ffffff;
  --accent-soft: #e6eefc;
  --ok: #2e8b57;
  --err: #b4373a;
  --err-soft: #fbeaea;
  --code: #f1f3f6;
  --shadow: 0 1px 2px rgba(20, 24, 31, 0.06), 0 8px 28px rgba(20, 24, 31, 0.08);
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14161b;
    --bg2: #1a1d24;
    --card: #1d2027;
    --line: #2d323b;
    --text: #e2e5ea;
    --muted: #9aa1ac;
    --accent: #5b8ff0;
    --accent-text: #0e1116;
    --accent-soft: #1f2a40;
    --ok: #5cc28a;
    --err: #ec8a8a;
    --err-soft: #3a2224;
    --code: #16181d;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 10px 30px rgba(0, 0, 0, 0.35);
  }
}

* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; }
html { background: var(--bg); touch-action: manipulation; }
body {
  background: radial-gradient(1200px 600px at 50% -10%, var(--bg2), var(--bg));
  color: var(--text);
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-underline-offset: 2px; }
#frame { position: fixed; inset: 0; width: 100%; height: 100%; border: 0; display: none; }
#status { min-height: 100%; display: flex; align-items: center; justify-content: center; padding: 24px 16px; }

.card {
  width: 100%;
  max-width: 440px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  box-shadow: var(--shadow);
  padding: 24px;
}
.brand { display: flex; align-items: center; gap: 12px; margin-bottom: 20px; }
.logo { width: 40px; height: 40px; flex: none; }
.logo-bg { fill: var(--accent); }
.logo-mast, .logo-wave { stroke: var(--accent-text); stroke-width: 1.8; fill: none; stroke-linecap: round; }
.logo-wave { opacity: 0.85; }
.logo-dot { fill: var(--accent-text); }
.brand .name { font-weight: 650; font-size: 18px; letter-spacing: 0.2px; }
.brand .host { color: var(--muted); font-size: 13px; }

h1 { font-size: 20px; line-height: 1.3; margin: 0 0 6px; font-weight: 650; }
h2 { font-size: 15px; margin: 0 0 4px; font-weight: 600; }
p { margin: 0 0 12px; }
.muted { color: var(--muted); }
.small { font-size: 13px; }
.center { text-align: center; }
b { font-weight: 600; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 42px; padding: 0 16px; border-radius: 10px;
  border: 1px solid var(--line); background: var(--card); color: var(--text);
  font: inherit; font-weight: 550; cursor: pointer; text-decoration: none;
}
.btn:hover { border-color: var(--accent); }
.btn:focus-visible, textarea:focus-visible, .link:focus-visible, summary:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-text); }
.btn.primary:hover { filter: brightness(1.08); }
.btn.block { width: 100%; }
.btn[disabled] { opacity: 0.55; cursor: default; filter: none; }
.actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
.link { background: none; border: 0; padding: 0; color: var(--accent); font: inherit; cursor: pointer; text-decoration: underline; text-underline-offset: 2px; }

/* The welcome view: the restore form first, the other ways in below. */
.lead { color: var(--muted); margin-bottom: 18px; }
#pair { margin: 0; }
#pair label { display: block; font-weight: 600; margin-bottom: 6px; }
textarea {
  width: 100%; min-height: 96px; resize: vertical; padding: 10px 12px;
  border: 1px solid var(--line); border-radius: 10px; background: var(--code); color: var(--text);
  font: 14px/1.5 ui-monospace, SFMono-Regular, Menlo, monospace;
}
.check { display: flex; justify-content: space-between; gap: 8px; margin: 6px 0 12px; font-size: 13px; color: var(--muted); }
.check .good { color: var(--ok); }
.check .bad { color: var(--err); }
.ways { margin-top: 18px; border-top: 1px solid var(--line); }
details { border-bottom: 1px solid var(--line); }
details:last-child { border-bottom: 0; }
summary { cursor: pointer; padding: 12px 0; font-weight: 550; list-style: none; display: flex; justify-content: space-between; align-items: center; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; color: var(--muted); font-weight: 400; font-size: 18px; }
details[open] summary::after { content: "−"; }
details .body { padding: 0 0 14px; color: var(--muted); font-size: 14px; }
code, .code {
  font: 13px/1.5 ui-monospace, SFMono-Regular, Menlo, monospace;
  background: var(--code); border: 1px solid var(--line); border-radius: 6px; padding: 1px 5px; color: var(--text);
}
.code { display: block; padding: 8px 10px; margin: 6px 0; overflow-x: auto; white-space: pre; }

/* A device: its name and the words of its fingerprint. */
.device { display: flex; align-items: center; gap: 12px; padding: 12px; border: 1px solid var(--line); border-radius: 12px; margin: 12px 0 16px; }
.device .icon { width: 36px; height: 36px; border-radius: 10px; background: var(--accent-soft); color: var(--accent); display: flex; align-items: center; justify-content: center; flex: none; }
.device .icon svg { width: 20px; height: 20px; stroke: currentColor; fill: none; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
.fp { display: flex; flex-wrap: wrap; gap: 6px; margin: 12px 0; }
.fp span { padding: 6px 10px; border-radius: 8px; background: var(--accent-soft); color: var(--text); font: 600 16px/1.2 ui-monospace, SFMono-Regular, Menlo, monospace; }
.fp.big { justify-content: center; }
.fp.big span { font-size: 18px; padding: 8px 12px; }

/* The connection: three steps that tick. */
.steps { list-style: none; padding: 0; margin: 4px 0 0; }
.steps li { display: flex; align-items: center; gap: 12px; padding: 9px 0; color: var(--muted); }
.steps li .dot { width: 22px; height: 22px; border-radius: 50%; border: 2px solid var(--line); flex: none; display: flex; align-items: center; justify-content: center; }
.steps li.done { color: var(--text); }
.steps li.done .dot { border-color: var(--ok); background: var(--ok); }
.steps li.done .dot::after { content: ""; width: 6px; height: 10px; border: solid var(--card); border-width: 0 2px 2px 0; transform: translateY(-1px) rotate(45deg); }
.steps li.now { color: var(--text); font-weight: 550; }
.steps li.now .dot { border-color: var(--accent); border-top-color: transparent; animation: spin 0.9s linear infinite; }

/* What the current step waits for (#74), under its label. */
.steps li .label { display: flex; flex-direction: column; min-width: 0; }
.steps li .sub { display: flex; flex-direction: column; font-size: 13px; font-weight: 400; color: var(--muted); }
.stall { margin-top: 12px; padding: 12px 14px; border-radius: 10px; background: var(--err-soft); color: var(--text); font-size: 14px; }
.stall b { color: var(--err); }
.stall .actions { margin-top: 10px; }

/* The journal of the connection: every event with its time, to read or to copy. */
#trace { margin-top: 16px; border-top: 1px solid var(--line); border-bottom: 0; }
#trace[hidden] { display: none; }
#trace summary { padding: 10px 0 4px; font-size: 13px; color: var(--muted); }
#trace pre {
  margin: 6px 0 10px; padding: 8px 10px; max-height: 220px; overflow: auto;
  background: var(--code); border: 1px solid var(--line); border-radius: 8px;
  font: 12px/1.5 ui-monospace, SFMono-Regular, Menlo, monospace; white-space: pre-wrap; word-break: break-word;
}
#trace .btn { min-height: 32px; font-size: 13px; }

.spin { width: 26px; height: 26px; margin: 8px auto 14px; border: 2.5px solid var(--line); border-top-color: var(--accent); border-radius: 50%; animation: spin 0.9s linear infinite; }
@keyframes spin { to { transform: rotate(1turn); } }
@media (prefers-reduced-motion: reduce) { .spin, .steps li.now .dot { animation-duration: 3s; } }

#quota-bar {
  position: fixed; left: 50%; bottom: 16px; transform: translateX(-50%); z-index: 2;
  width: max-content; max-width: calc(100% - 32px);
  display: flex; align-items: center; gap: 12px;
  background: var(--card); border: 1px solid var(--line); border-radius: 12px; box-shadow: var(--shadow);
  padding: 10px 12px 10px 16px; font-size: 14px;
}
.err { background: var(--err-soft); color: var(--err); border-radius: 10px; padding: 12px 14px; font-weight: 550; }
.notice { display: flex; gap: 10px; align-items: flex-start; }

/* A new shell is ready (#73): a bar over the app, until the user reloads. */
#update {
  position: fixed; left: 16px; right: 16px; bottom: 40px; margin: 0 auto; z-index: 10;
  display: flex; align-items: center; gap: 12px; width: max-content; max-width: calc(100% - 32px);
  padding: 8px 8px 8px 16px; border-radius: 12px; border: 1px solid var(--line);
  background: var(--card); color: var(--text); box-shadow: var(--shadow); font-size: 14px;
}
#update[hidden] { display: none; }
#update .btn { min-height: 34px; flex: none; }
.foot-actions { display: flex; gap: 14px; }
.install-hint { margin: 10px 0 0; text-align: center; }

footer { display: flex; justify-content: space-between; gap: 12px; margin-top: 20px; padding-top: 14px; border-top: 1px solid var(--line); color: var(--muted); font-size: 13px; }

@media (max-width: 420px) {
  #status { align-items: flex-start; padding-top: 32px; }
  .card { padding: 20px 18px; border-radius: 14px; }
  .actions .btn { flex: 1; }
}