:root {
  --fg: #1d2330; --muted: #6b7280; --line: #e3e6ec; --bg: #f6f7f9; --card: #fff;
  --accent: #2557d6; --accent-soft: #e8eefc; --err: #b42318; --err-soft: #fef3f2;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--fg);
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
.page { max-width: 820px; margin: 0 auto; padding: 32px 16px 64px; }
.page.wide { max-width: 1200px; }
h1 { font-size: 1.6rem; margin: 0 0 8px; }
h2 { font-size: 1.15rem; margin: 32px 0 12px; }
.card h2 { margin: 0 0 8px; font-size: 1rem; }
h3 { font-size: .95rem; margin: 16px 0 6px; }
a { color: var(--accent); }
.muted { color: var(--muted); font-size: .9em; }
.req { color: var(--err); }
.num { color: var(--accent); font-weight: 600; }

.card { background: var(--card); border: 1px solid var(--line); border-radius: 10px;
  padding: 18px 20px; margin: 0 0 14px; }
fieldset.card { min-width: 0; }
legend { font-weight: 600; padding: 0; float: left; width: 100%; margin-bottom: 10px; }
legend ~ * { clear: both; }  /* every sibling: a float next to a scroll container breaks scrollIntoView/focus in Chromium */
.has-error { border-color: var(--err); background: var(--err-soft); }
.error { color: var(--err); margin: 4px 0 8px; font-size: .9rem; }
.alert { background: var(--err-soft); border: 1px solid var(--err); color: var(--err);
  border-radius: 10px; padding: 10px 16px; margin-bottom: 16px; }
.alert p { margin: 4px 0; }

.field { display: block; margin: 0 0 12px; }
.field > span { display: block; font-size: .9rem; font-weight: 600; margin-bottom: 4px; }
.field.detail { margin-top: 12px; }
.field.detail > span { font-weight: 400; color: var(--muted); }
input[type=text], input[type=email], input[type=password], textarea {
  width: 100%; padding: 9px 11px; border: 1px solid #cfd4dc; border-radius: 8px;
  font: inherit; background: #fff; }
input:focus, textarea:focus { outline: 2px solid var(--accent); outline-offset: 0; border-color: var(--accent); }
[aria-invalid=true] { border-color: var(--err); }

.options { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 6px 16px; }
.options.inline { display: flex; flex-wrap: wrap; gap: 6px 24px; }
.opt { display: flex; gap: 8px; align-items: flex-start; cursor: pointer; padding: 4px 0; }
.opt input { margin-top: 4px; }
input[type=radio], input[type=checkbox] { accent-color: var(--accent); width: 17px; height: 17px; }

.matrix-wrap { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; }
.matrix th, .matrix td { padding: 8px 10px; border-bottom: 1px solid var(--line); }
.matrix thead th { font-size: .8rem; font-weight: 600; color: var(--muted); text-align: center; vertical-align: bottom; }
.matrix tbody th { text-align: left; font-weight: 400; }
.matrix td { text-align: center; }
.matrix td label { display: block; cursor: pointer; padding: 2px; }
.matrix tbody tr:hover { background: var(--accent-soft); }

.hp { position: absolute; left: -10000px; width: 1px; height: 1px; overflow: hidden; }

button { font: inherit; cursor: pointer; }
button.primary { background: var(--accent); color: #fff; border: 0; border-radius: 8px;
  padding: 11px 28px; font-weight: 600; }
button.primary:hover { filter: brightness(1.08); }

.center { text-align: center; padding: 40px 24px; }
.login { max-width: 380px; margin: 60px auto; }

/* admin */
.admin-nav { display: flex; gap: 18px; align-items: center; flex-wrap: wrap;
  padding-bottom: 14px; margin-bottom: 20px; border-bottom: 1px solid var(--line); }
.admin-nav .logout { margin-left: auto; }
.admin-nav button { background: none; border: 1px solid var(--line); border-radius: 6px; padding: 4px 12px; }
.kpis { margin-bottom: 20px; }
.bars th { text-align: left; font-weight: 400; padding: 4px 12px 4px 0; width: 45%; }
.bars td { padding: 4px 6px; }
.bars .bar { width: 40%; }
.bars .n { text-align: right; white-space: nowrap; width: 1%; }
progress { width: 100%; height: 14px; appearance: none; border: 0; border-radius: 7px; background: var(--accent-soft); overflow: hidden; }
progress::-webkit-progress-bar { background: var(--accent-soft); border-radius: 7px; }
progress::-webkit-progress-value { background: var(--accent); border-radius: 7px; }
progress::-moz-progress-bar { background: var(--accent); border-radius: 7px; }
.matrix.stats td { font-size: .9rem; white-space: nowrap; }
.heat-0 { background: #fff; }
.heat-20 { background: #eef2fd; }
.heat-40 { background: #d9e3fb; }
.heat-60 { background: #bccdf7; }
.heat-80, .heat-100 { background: #9db5f2; }
.texts { margin: 0; padding-left: 18px; }
.texts li { margin: 4px 0; white-space: pre-wrap; overflow-wrap: anywhere; }
.who { font-weight: 600; }
.list th, .list td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); font-size: .92rem; }
.list tr.older td { color: var(--muted); }
.meta, .answers { display: grid; grid-template-columns: max-content 1fr; gap: 6px 18px; margin: 0; }
.meta dt, .answers dt { color: var(--muted); }
.meta dd, .answers dd { margin: 0; }
.answers dd:first-child, .answers dt + dd { grid-column: 2; }
.answers > dd:not(dt + dd) { grid-column: 1 / -1; }
.pre { white-space: pre-wrap; overflow-wrap: anywhere; }

/* form enhancements (form.js) */
[hidden] { display: none !important; }
.progress-bar { position: sticky; top: 0; z-index: 10; display: flex; align-items: center; gap: 12px;
  background: var(--bg); padding: 10px 0; box-shadow: 0 1px 0 var(--line); margin: -10px 0 12px; font-size: .85rem; color: var(--muted); }
.progress-bar progress { flex: 1; height: 8px; }
.notice { display: flex; justify-content: space-between; align-items: center; gap: 12px;
  background: var(--accent-soft); border: 1px solid #c6d4f7; border-radius: 10px; padding: 10px 16px; margin-bottom: 16px; }
.notice button { background: #fff; border: 1px solid #c6d4f7; border-radius: 6px; padding: 4px 12px; white-space: nowrap; }
.ident.has-error { background: none; }
.ident.has-error input { border-color: var(--err); }
button.primary:disabled { opacity: .6; cursor: progress; }

/* email verification & editing */
.auth { max-width: 460px; }
.auth h2 { margin-top: 0; }
.auth-links { display: flex; gap: 20px; max-width: 460px; }
button.link { background: none; border: 0; padding: 0; color: var(--accent); text-decoration: underline; font-size: .92rem; }
.code-input { font-size: 1.4rem !important; letter-spacing: 6px; max-width: 220px; }
.deadline { background: #fff8e6; border: 1px solid #f3d58a; border-radius: 10px; padding: 10px 16px; margin: 0 0 16px; }
.signed-in { display: flex; gap: 14px; align-items: baseline; flex-wrap: wrap; font-size: .92rem; margin-bottom: 14px; }
.notice.editing { display: block; }
a.button { display: inline-block; background: var(--accent); color: #fff; text-decoration: none;
  border-radius: 8px; padding: 10px 24px; font-weight: 600; }