:root {
  --bg: #f4f6fa; --card: #fff; --text: #1d2433; --muted: #5d6679; --line: #d9dee8;
  --accent: #0f62fe; --accent-fg: #fff; --ok: #0a7d3b; --warn: #b3261e; --sel: #e8f0ff;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #12151c; --card: #1b2029; --text: #e7eaf1; --muted: #9aa3b5; --line: #2d3443;
    --accent: #6ea0ff; --accent-fg: #0b1220; --ok: #4cc27f; --warn: #ff8a80; --sel: #22304d;
  }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif; }
main { max-width: 720px; margin: 0 auto; padding: 24px 16px 64px; }
h1 { font-size: 1.5rem; margin: 0 0 4px; }
h2 { font-size: 1.2rem; margin: 0 0 16px; }
.sub { color: var(--muted); margin: 0 0 20px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 20px; margin-bottom: 16px; }
.progress { height: 6px; background: var(--line); border-radius: 3px; margin: 12px 0 24px; overflow: hidden; }
.progress > div { height: 100%; background: var(--accent); transition: width .2s; }
.q { margin-bottom: 24px; }
.q.invalid .qtext { color: var(--warn); }
.qtext { font-weight: 600; margin-bottom: 8px; }
.opt { display: flex; gap: 10px; align-items: flex-start; padding: 8px 12px; border: 1px solid var(--line); border-radius: 8px; margin-bottom: 6px; cursor: pointer; }
.opt:hover { border-color: var(--accent); }
.opt:has(input:checked) { background: var(--sel); border-color: var(--accent); }
.opt input { margin-top: 4px; }
.scale { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.scale .opt { flex-direction: column; align-items: center; padding: 8px 16px; margin: 0; }
.scale-labels { display: flex; justify-content: space-between; color: var(--muted); font-size: .85rem; margin-top: 4px; }
input[type=text], textarea { width: 100%; padding: 8px 10px; border: 1px solid var(--line); border-radius: 8px; background: var(--card); color: var(--text); font: inherit; }
textarea { min-height: 90px; }
.other-text { margin-top: 6px; }
.row { display: flex; gap: 12px; justify-content: space-between; margin-top: 8px; }
button { font: inherit; padding: 10px 20px; border-radius: 8px; border: 1px solid var(--accent); background: var(--accent); color: var(--accent-fg); cursor: pointer; }
button.secondary { background: transparent; color: var(--accent); }
button:disabled { opacity: .5; cursor: not-allowed; }
.err { color: var(--warn); margin: 8px 0; }
.users { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 10px; }
.user { text-align: left; padding: 14px; border-radius: 10px; border: 1px solid var(--line); background: var(--card); color: var(--text); }
.user:hover:not(:disabled) { border-color: var(--accent); background: var(--sel); }
.user small { display: block; color: var(--muted); }
.user.taken { opacity: .45; }
.cred { font-family: ui-monospace, Consolas, monospace; background: var(--bg); border: 1px solid var(--line); border-radius: 8px; padding: 10px 12px; margin: 6px 0 12px; word-break: break-all; }
.cred-label { color: var(--muted); font-size: .85rem; }
a:not(.btn-link) { color: var(--accent); }
/* A real <button> styled as a link: it performs an action, so it must not be an <a>. */
button.linklike { background: none; border: 0; padding: 0; font: inherit; color: var(--accent); text-decoration: underline; cursor: pointer; }
a.btn-link { display: inline-block; padding: 10px 20px; border-radius: 8px; background: var(--accent); color: var(--accent-fg); text-decoration: none; }
ol.steps { padding-left: 20px; }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 8px; border-bottom: 1px solid var(--line); }
.tag { padding: 2px 8px; border-radius: 10px; font-size: .8rem; background: var(--sel); }
.free { color: var(--ok); }
.tasks { display: grid; gap: 8px; margin: 8px 0 16px; }
.task { display: block; text-align: left; padding: 10px 12px; border-radius: 8px; border: 1px solid var(--line); background: var(--card); color: var(--text); }
.task:hover { border-color: var(--accent); }
.task.active { border-color: var(--accent); background: var(--sel); }
.task.complete strong::after { content: " ✓"; color: var(--ok); }
.task small { display: block; color: var(--muted); font-size: .85rem; }
.cred { display: flex; align-items: center; gap: 8px; }
.cred-value { flex: 1; min-width: 0; word-break: break-all; }
button.copy-icon {
  flex: none; display: inline-flex; align-items: center; justify-content: center;
  width: 30px; height: 30px; padding: 0; border-radius: 6px;
  background: transparent; border: 1px solid transparent; color: var(--muted); cursor: pointer;
}
button.copy-icon:hover { color: var(--accent); border-color: var(--line); background: var(--card); }
button.copy-icon:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }
button.copy-icon.copied { color: var(--ok); border-color: transparent; background: transparent; }
ol.steps { margin: 8px 0 16px; padding-left: 22px; }
ol.steps li { margin-bottom: 10px; }
ol.steps li .sub { margin: 2px 0 0; font-size: .9rem; }
.step-shots { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 10px; }
.step-shots img {
  max-width: 100%; width: 320px; height: auto; border: 1px solid var(--line);
  border-radius: 8px; background: #fff;
}