/* Deliberately one file, no framework, no webfont: `script-src 'self'` and
   `style-src 'self'` mean anything fetched from elsewhere simply does not load,
   and a consent screen that renders half-styled reads as a phishing page. */

:root {
  color-scheme: light dark;
  --bg: #f6f5f3;
  --card: #ffffff;
  --ink: #1a1a18;
  --muted: #6b6a66;
  --line: #e2e0dc;
  --accent: #1f6f4f;
  --accent-ink: #ffffff;
  --warn-bg: #fdf6e3;
  --warn-ink: #6b5518;
  --error: #a12d2d;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #16171a;
    --card: #1f2124;
    --ink: #eceae6;
    --muted: #9a988f;
    --line: #32353a;
    --accent: #4fa77e;
    --accent-ink: #10221a;
    --warn-bg: #2b2617;
    --warn-ink: #e0c98a;
    --error: #f08a8a;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  padding: 1.5rem;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.55 ui-sans-serif, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

.card {
  width: 100%;
  max-width: 27rem;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 1.75rem;
  box-shadow: 0 1px 2px rgba(0,0,0,.04), 0 8px 24px rgba(0,0,0,.06);
}

.head { display: flex; gap: .875rem; align-items: center; margin-bottom: 1.5rem; }

.mark {
  width: 2.5rem; height: 2.5rem; flex: none;
  display: grid; place-items: center;
  border-radius: 9px;
  background: var(--accent); color: var(--accent-ink);
  font-weight: 700; font-size: 1.15rem;
}

h1 { font-size: 1.05rem; margin: 0; letter-spacing: .01em; }
h2 { font-size: 1.15rem; margin: 0 0 .5rem; }
.sub, .muted { color: var(--muted); font-size: .875rem; margin: .15rem 0 0; }
.lede { margin: 0 0 1.25rem; }

.detail { margin: 0 0 1.25rem; padding: 0; }
.detail dt { color: var(--muted); font-size: .75rem; text-transform: uppercase; letter-spacing: .06em; margin-top: .875rem; }
.detail dd { margin: .2rem 0 0; word-break: break-word; }
.detail code { font: .8125rem/1.4 ui-monospace, SFMono-Regular, Menlo, monospace; }

.warn {
  background: var(--warn-bg); color: var(--warn-ink);
  border-radius: 9px; padding: .75rem .875rem;
  font-size: .8125rem; margin: 0 0 1.25rem;
}

.error { color: var(--error); word-break: break-word; }

label { display: block; font-size: .8125rem; color: var(--muted); margin-bottom: .3rem; }

input {
  width: 100%; padding: .625rem .75rem; margin-bottom: .875rem;
  border: 1px solid var(--line); border-radius: 8px;
  background: var(--bg); color: var(--ink); font: inherit;
}
input:focus-visible, button:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.actions { display: flex; gap: .625rem; }

button { font: inherit; border-radius: 8px; cursor: pointer; }
button[disabled] { opacity: .55; cursor: progress; }

.primary {
  flex: 1; padding: .625rem 1rem; border: 1px solid transparent;
  background: var(--accent); color: var(--accent-ink); font-weight: 600;
}
.secondary {
  flex: 1; padding: .625rem 1rem;
  border: 1px solid var(--line); background: transparent; color: var(--ink);
}
.link {
  display: block; margin: 1rem auto 0; padding: .25rem;
  border: 0; background: none; color: var(--muted);
  font-size: .8125rem; text-decoration: underline;
}

.foot { max-width: 27rem; text-align: center; }
.foot p { color: var(--muted); font-size: .75rem; margin: 0; }