*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #0f172a;
  --surface: #1e293b;
  --card: #334155;
  --text: #f1f5f9;
  --muted: #94a3b8;
  --primary: #6366f1;
  --primary-hover: #818cf8;
  --accent: #22d3ee;
  --warn: #fbbf24;
  --radius: 12px;
  --font: system-ui, -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
}

#app { max-width: 960px; margin: 0 auto; padding: 24px 16px 48px; }

.view { display: none; }
.view.active { display: block; }

.hero { text-align: center; margin-bottom: 32px; }
.hero h1 { font-size: 2rem; font-weight: 700; background: linear-gradient(135deg, var(--primary), var(--accent)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.hero.compact { margin-bottom: 20px; }
.subtitle { color: var(--muted); margin-top: 8px; font-size: 0.95rem; }
.type-badge { font-size: 1.5rem; font-weight: 600; color: var(--accent); margin-top: 8px; }

.card {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 16px;
  border: 1px solid rgba(255,255,255,0.06);
}

.card-grid { display: grid; gap: 16px; }
@media (min-width: 640px) { .card-grid { grid-template-columns: 1fr 1fr; } }

.card h2, .card h3 { font-size: 1.1rem; margin-bottom: 12px; color: var(--accent); }
.card ul { list-style: none; }
.card li { padding: 10px 0; border-bottom: 1px solid rgba(255,255,255,0.06); }
.card li strong { display: block; font-size: 0.95rem; }
.card li span { font-size: 0.82rem; color: var(--muted); }

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 10px 20px; border-radius: 8px; border: none;
  font-size: 0.9rem; font-weight: 500; cursor: pointer;
  font-family: inherit; transition: background 0.15s, transform 0.1s;
}
.btn:active { transform: scale(0.98); }
.btn.primary { background: var(--primary); color: #fff; }
.btn.primary:hover { background: var(--primary-hover); }
.btn.secondary { background: var(--card); color: var(--text); border: 1px solid rgba(255,255,255,0.1); }
.btn.secondary:hover { background: #475569; }
.btn.ghost { background: transparent; color: var(--muted); }
.btn.ghost:hover { color: var(--text); }
.btn:disabled { opacity: 0.4; cursor: not-allowed; }

.btn-row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.btn-row.center { justify-content: center; margin-top: 24px; }

.mode-toggle { display: block; padding: 8px 0; cursor: pointer; font-size: 0.9rem; }
.mode-toggle input { margin-right: 8px; accent-color: var(--primary); }

.file-btn { cursor: pointer; }
.hint { font-size: 0.85rem; color: var(--accent); margin-top: 12px; }
.hidden { display: none !important; }

.disclaimer { margin-top: 32px; text-align: center; font-size: 0.8rem; color: var(--muted); }
.disclaimer strong { color: var(--warn); }

/* Test view */
.test-header { display: flex; align-items: center; gap: 12px; margin-bottom: 24px; flex-wrap: wrap; }
.progress-wrap { flex: 1; min-width: 120px; }
.progress-bar { height: 6px; background: var(--card); border-radius: 3px; overflow: hidden; }
#progress-fill { height: 100%; background: linear-gradient(90deg, var(--primary), var(--accent)); transition: width 0.3s; width: 0; }
#progress-text { font-size: 0.8rem; color: var(--muted); }
.badge { background: var(--card); padding: 4px 12px; border-radius: 20px; font-size: 0.78rem; color: var(--accent); }

.question-card { background: var(--surface); border-radius: var(--radius); padding: 32px 24px; margin-bottom: 16px; border: 1px solid rgba(255,255,255,0.06); }
.q-num { font-size: 0.85rem; color: var(--muted); margin-bottom: 8px; }
#question-text { font-size: 1.25rem; font-weight: 500; margin-bottom: 24px; line-height: 1.5; }

.likert { display: flex; flex-direction: column; gap: 8px; }
.likert-opt {
  display: flex; align-items: center; gap: 12px;
  padding: 14px 16px; border-radius: 8px;
  background: var(--card); cursor: pointer;
  border: 2px solid transparent; transition: border-color 0.15s, background 0.15s;
}
.likert-opt:hover { background: #475569; }
.likert-opt.checked, .likert-opt:has(input:checked) { border-color: var(--primary); background: rgba(99,102,241,0.15); }
.likert-opt input { accent-color: var(--primary); width: 18px; height: 18px; }
.likert-opt .num { font-weight: 700; color: var(--primary); min-width: 20px; }
.likert-opt .lbl { font-size: 0.92rem; }

.nav-row { display: flex; justify-content: space-between; gap: 12px; }

/* Result view */
.result-grid { display: grid; gap: 16px; }
@media (min-width: 640px) { .result-grid { grid-template-columns: 1fr 1fr; } }
.full-width { grid-column: 1 / -1; }

.banner { padding: 12px 16px; border-radius: 8px; margin-bottom: 16px; font-size: 0.9rem; }
.banner.warn { background: rgba(251,191,36,0.15); color: var(--warn); border: 1px solid rgba(251,191,36,0.3); }

.bars { margin-top: 16px; }
.bar-row { display: grid; grid-template-columns: 1fr 2fr auto; gap: 8px; align-items: center; margin-bottom: 8px; font-size: 0.82rem; }
.bar-label { color: var(--muted); }
.bar-track { height: 8px; background: var(--card); border-radius: 4px; overflow: hidden; }
.bar-fill { height: 100%; border-radius: 4px; transition: width 0.5s; }
.bar-value { color: var(--accent); font-weight: 600; min-width: 36px; text-align: right; }

.result-item { padding: 12px 0; border-bottom: 1px solid rgba(255,255,255,0.06); }
.result-item .label { display: block; font-size: 0.8rem; color: var(--muted); }
.result-item strong { font-size: 1.05rem; color: var(--accent); }

.detail .tag { display: inline-block; background: rgba(34,211,238,0.15); color: var(--accent); padding: 2px 10px; border-radius: 12px; font-size: 0.8rem; margin: 4px 4px 4px 0; }

#interpretation h3 { font-size: 1rem; color: var(--accent); margin: 16px 0 8px; }
#interpretation p { font-size: 0.92rem; color: var(--muted); margin-bottom: 8px; }
#interpretation .meta { font-size: 0.8rem; margin-top: 16px; font-style: italic; }

.facet-wrap { display: flex; flex-wrap: wrap; gap: 6px; }
.facet-tag { background: var(--card); padding: 4px 10px; border-radius: 6px; font-size: 0.78rem; color: var(--muted); }

canvas { display: block; margin: 0 auto; }

@media print {
  body { background: #fff; color: #000; }
  .btn-row, .test-header button, .nav-row { display: none; }
  .card { border: 1px solid #ddd; break-inside: avoid; }
}