:root {
  --bg: #f6f5f3; --card: #ffffff; --text: #1d1d1f; --muted: #6b6b70;
  --accent: #d6336c; --accent-hover: #c2255c; --accent-text: #ffffff; --link: #c2255c; --tint: #fdf0f4; --tint-border: #f6cfdc;
  --border: #dcdad6; --danger: #b42318; --field: #ffffff;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #161618; --card: #1f1f22; --text: #ececee; --muted: #9a9aa1;
    --accent: #d6336c; --accent-hover: #e64980; --accent-text: #ffffff; --link: #f783ac; --tint: #2a1f24; --tint-border: #4a2c38;
    --border: #37373c; --danger: #ff6b5e; --field: #18181b;
  }
}
* { box-sizing: border-box; }
html, body { margin: 0; background: var(--bg); color: var(--text); }
body { font: 16px/1.55 system-ui, -apple-system, "Segoe UI", sans-serif; padding: 24px 16px; }
.card { max-width: 560px; margin: 6vh auto; background: var(--card); border: 1px solid var(--border); border-radius: 14px; padding: 32px; box-shadow: 0 1px 2px rgba(0,0,0,.04), 0 8px 24px rgba(0,0,0,.06); }
.top { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; flex-wrap: wrap; }
h1 { font-size: 1.625rem; line-height: 1.2; letter-spacing: -.01em; margin: 0 0 8px; }
h2 { font-size: 1.05rem; margin: 24px 0 8px; }
p { margin: 0 0 12px; }
.brand { font-size: .75rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--link); margin: 0 0 10px; }
.lead { font-size: 1.05rem; color: var(--muted); }
label { display: block; font-weight: 600; margin: 16px 0 6px; }
input, textarea, select {
  width: 100%; font: inherit; color: var(--text); background: var(--field);
  border: 1px solid var(--border); border-radius: 8px; padding: 10px 12px;
}
textarea { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; resize: vertical; white-space: pre; overflow-wrap: normal; overflow-x: auto; tab-size: 4; }
.button {
  display: inline-block; font: inherit; font-weight: 600; border: 0; border-radius: 8px; cursor: pointer;
  padding: 11px 18px; margin-top: 16px; background: var(--accent); color: var(--accent-text); text-decoration: none;
  transition: background .15s;
}
.button:hover:not(:disabled) { background: var(--accent-hover); }
.button.secondary:hover:not(:disabled), .button.danger:hover:not(:disabled) { background: var(--tint); }
.button:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible { outline: 2px solid var(--link); outline-offset: 2px; }
.button.wide { display: block; width: 100%; padding: 13px 18px; margin-top: 24px; }
.button.secondary { background: transparent; color: var(--text); border: 1px solid var(--border); }
.button.danger { background: transparent; color: var(--danger); border: 1px solid var(--danger); }
.button:disabled { opacity: .5; cursor: default; }
.row { display: flex; gap: 8px; align-items: end; flex-wrap: wrap; }
.row input { flex: 1 1 260px; }
.muted { color: var(--muted); }
.small { font-size: .875rem; }
.error { color: var(--danger); }
a { color: var(--link); }
label.check { display: flex; gap: 8px; align-items: center; font-weight: 400; }
label.check input { width: auto; margin: 0; }
.links { list-style: none; padding: 0; margin: 0; }
.links li { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 10px 0; border-top: 1px solid var(--border); }
.links li .button { margin-top: 0; padding: 6px 12px; }
.links .who { font-weight: 600; word-break: break-all; }
.when { font-size: .925rem; font-weight: 600; margin: 16px 0 0; padding: 10px 14px; background: var(--tint); border: 1px solid var(--tint-border); border-radius: 8px; }
.when.expired { color: var(--danger); border-color: var(--danger); background: transparent; }
h2.label { font-size: .75rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); margin: 26px 0 12px; }
.steps { list-style: none; counter-reset: step; margin: 0; padding: 0; }
.steps li { counter-increment: step; position: relative; padding-left: 40px; margin: 0 0 14px; min-height: 26px; }
.steps li::before {
  content: counter(step); position: absolute; left: 0; top: -1px; width: 26px; height: 26px; border-radius: 50%;
  display: grid; place-items: center; font-size: .8rem; font-weight: 700; color: var(--link); background: var(--tint); border: 1px solid var(--tint-border);
}
.warn { font-size: .925rem; margin: 14px 0 0; padding: 10px 14px; border: 1px solid var(--danger); border-radius: 8px; color: var(--danger); }
.warn strong { color: var(--danger); }
.timer { display: flex; justify-content: space-between; align-items: center; gap: 12px; font-weight: 600; margin: 0 0 10px; padding: 10px 14px; background: var(--tint); border: 1px solid var(--tint-border); border-radius: 8px; }
.timer[hidden] { display: none; }
.timer strong { font-size: 1.5rem; line-height: 1; font-variant-numeric: tabular-nums; }
.timer.urgent { color: var(--danger); border-color: var(--danger); background: transparent; }
.foot { font-size: .8rem; color: var(--muted); text-align: center; margin: 16px 0 0; }
@media (max-width: 480px) { .card { padding: 22px; margin: 2vh auto; } h1 { font-size: 1.4rem; } }