:root {
  color-scheme: dark;
  --bg: #0f141a;
  --panel: #171e26;
  --panel-2: #202936;
  --text: #eef3f8;
  --muted: #9eabb8;
  --line: #344050;
  --primary: #5ba8ff;
  --success: #47c78a;
  --warning: #f0a53a;
  --danger: #ef6461;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, Segoe UI, sans-serif;
  background: var(--bg);
  color: var(--text);
}

a { color: var(--primary); }

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 1rem 2rem;
  background: #0a0f14;
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 5;
}

.brand {
  color: var(--text);
  font-weight: 800;
  text-decoration: none;
  letter-spacing: .04em;
}

.subtitle {
  color: var(--muted);
  margin-left: .7rem;
}

.topbar nav {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.topbar nav a { text-decoration: none; }
.user { color: var(--muted); }

.container {
  width: min(1400px, calc(100% - 2rem));
  margin: 2rem auto 4rem;
}

.page-heading,
.detail-heading {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: flex-start;
  margin-bottom: 1.5rem;
}

h1, h2, h3 { margin-top: 0; }
p { line-height: 1.55; }

.summary-badge,
.machine,
.severity,
.status {
  display: inline-block;
  border-radius: 999px;
  padding: .35rem .7rem;
  background: var(--panel-2);
  font-size: .88rem;
}

.machine { font-weight: 800; }

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
  gap: 1rem;
}

.decision-card,
.decision-detail,
.login-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 1.25rem;
}

.decision-card.severity-critical {
  border-left: 5px solid var(--danger);
}

.decision-card.severity-warning {
  border-left: 5px solid var(--warning);
}

.card-head,
.status-pair,
.status-stack {
  display: flex;
  gap: .5rem;
  flex-wrap: wrap;
  justify-content: space-between;
}

.question { font-size: 1.08rem; }

.facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: .75rem;
}

.facts div {
  background: var(--panel-2);
  border-radius: 10px;
  padding: .7rem;
}

.facts dt {
  color: var(--muted);
  font-size: .8rem;
}

.facts dd { margin: .25rem 0 0; }

.button,
button {
  border: 0;
  border-radius: 9px;
  padding: .72rem 1rem;
  font: inherit;
  cursor: pointer;
}

.primary {
  background: var(--primary);
  color: #06111f;
  font-weight: 800;
  text-decoration: none;
}

.link-button {
  color: var(--primary);
  background: transparent;
  padding: 0;
}

.inline { display: inline; }

.alert {
  padding: .9rem 1rem;
  border-radius: 10px;
  margin-bottom: 1rem;
}

.alert.error {
  background: rgba(239, 100, 97, .16);
  border: 1px solid var(--danger);
}

.alert.success {
  background: rgba(71, 199, 138, .16);
  border: 1px solid var(--success);
}

.empty-state {
  text-align: center;
  padding: 4rem 1rem;
  color: var(--muted);
}

.login-card {
  max-width: 460px;
  margin: 7rem auto;
}

label {
  display: block;
  margin: 1rem 0;
}

input,
textarea,
select {
  width: 100%;
  margin-top: .4rem;
  padding: .75rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #0e151d;
  color: var(--text);
  font: inherit;
}

input[type="checkbox"],
input[type="radio"] {
  width: auto;
  margin: 0;
}

fieldset {
  margin: 1.25rem 0;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 1rem;
}

legend {
  padding: 0 .5rem;
  font-weight: 800;
}

.check-row,
.radio-row {
  display: flex;
  align-items: flex-start;
  gap: .7rem;
  margin: .65rem 0;
}

.help,
small { color: var(--muted); }

.timeline {
  display: grid;
  gap: .75rem;
}

.timeline-item {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 1rem;
  background: var(--panel-2);
  border-radius: 10px;
  padding: 1rem;
  border-left: 4px solid var(--warning);
}

.timeline-item.reviewed {
  border-left-color: var(--success);
  opacity: .82;
}

.timeline-time {
  display: flex;
  flex-direction: column;
  gap: .35rem;
}

.question-box {
  background: var(--panel-2);
  border-radius: 12px;
  padding: 1rem;
  margin: 1rem 0 1.5rem;
}

details {
  margin: 1.5rem 0;
  background: var(--panel-2);
  padding: 1rem;
  border-radius: 10px;
}

details summary {
  cursor: pointer;
  font-weight: 800;
}

.evidence-list article {
  border-top: 1px solid var(--line);
  padding: 1rem 0;
}

.review-form {
  border-top: 1px solid var(--line);
  margin-top: 2rem;
  padding-top: 1rem;
}

.confirmation {
  background: rgba(240, 165, 58, .12);
  padding: 1rem;
  border-radius: 10px;
}

.table-wrap { overflow-x: auto; }

table {
  width: 100%;
  border-collapse: collapse;
  background: var(--panel);
}

th, td {
  padding: .75rem;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

th { color: var(--muted); }
.back { display: inline-block; margin-bottom: 1rem; }

@media (max-width: 760px) {
  .topbar,
  .page-heading,
  .detail-heading {
    flex-direction: column;
  }

  .timeline-item {
    grid-template-columns: 1fr;
  }

  .facts {
    grid-template-columns: 1fr;
  }

  .card-grid {
    grid-template-columns: 1fr;
  }
}