:root {
  color-scheme: light dark;
  --bg: #f4f3f6;
  --card: #ffffff;
  --border: #e6e3ea;
  --text: #1e1b24;
  --muted: #5e5868;
  --chip: #f1eff4;
  --accent: #15805c;
  --on-accent: #ffffff;
  --focus: #2f5bd3;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1c1b1f;
    --card: #26242b;
    --border: #3a3741;
    --text: #f2eff6;
    --muted: #b4aebe;
    --chip: #34313a;
    --focus: #8fa8ff;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 48px 16px;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif;
}

main {
  width: 100%;
  max-width: 440px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 28px 24px;
  border: 1px solid var(--border);
  border-radius: 18px;
  background: var(--card);
}

h1 {
  margin: 0;
  font-size: 24px;
  line-height: 1.25;
}

h2 {
  margin: 0;
  font-size: 19px;
}

p {
  margin: 0;
}

.who {
  padding: 10px 12px;
  border-radius: 12px;
  background: var(--chip);
  font-size: 14px;
  overflow-wrap: anywhere;
}

.note {
  color: var(--muted);
  font-size: 14px;
}

section {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

section[hidden] {
  display: none;
}

button {
  min-height: 48px;
  padding: 0 18px;
  border: 0;
  border-radius: 12px;
  background: var(--chip);
  color: var(--text);
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}

button.primary {
  background: var(--accent);
  color: var(--on-accent);
}

button:disabled {
  opacity: 0.6;
  cursor: default;
}

button:focus-visible,
input:focus-visible,
summary:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
}

details {
  margin-top: 6px;
}

summary {
  cursor: pointer;
  color: var(--muted);
  font-size: 14px;
  min-height: 44px;
  display: flex;
  align-items: center;
}

form {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding-top: 4px;
}

label {
  font-size: 14px;
  font-weight: 600;
}

input {
  min-height: 48px;
  padding: 0 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--card);
  color: var(--text);
  font: inherit;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  letter-spacing: 0.04em;
}

code {
  display: block;
  padding: 14px;
  border-radius: 12px;
  background: var(--chip);
  font-size: 18px;
  letter-spacing: 0.06em;
  text-align: center;
  overflow-wrap: anywhere;
  user-select: all;
}

#status {
  min-height: 1.5em;
  color: var(--muted);
  font-size: 14px;
}

.steps {
  margin: 0;
  padding-left: 22px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

input[type="file"] {
  min-height: 0;
  padding: 10px 0;
  border: 0;
  font-family: inherit;
  letter-spacing: normal;
}

#summary {
  padding: 12px;
  border-radius: 12px;
  background: var(--chip);
  font-weight: 600;
}

#summary[hidden] {
  display: none;
}

/* The public pages: home, privacy, terms. */
main.doc { max-width: 720px; gap: 12px; }
.doc h2 { margin: 14px 0 0; font-size: 18px; }
.doc .lead { font-size: 17px; color: var(--text); }
.doc ul { margin: 0; padding-left: 22px; display: flex; flex-direction: column; gap: 6px; }
.doc a { color: inherit; }
.doc footer { margin-top: 18px; padding-top: 14px; border-top: 1px solid var(--border); display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px; font-size: 14px; color: var(--muted); }