* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, "Segoe UI", Roboto, sans-serif;
  background: #0f172a;
  color: #e2e8f0;
  min-height: 100vh;
}
header {
  padding: 12px 16px;
  background: #1e293b;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 10;
}
header h1 { margin: 0; font-size: 1.1rem; }
#user-info { font-size: 0.85rem; opacity: 0.85; }
main { padding: 16px; max-width: 720px; margin: 0 auto; }
.screen.hidden { display: none; }
h2 { margin-top: 0; }
form label, #test-controls label {
  display: block;
  margin: 10px 0;
  font-size: 0.9rem;
}
input {
  display: block;
  width: 100%;
  padding: 10px 12px;
  margin-top: 4px;
  background: #1e293b;
  border: 1px solid #334155;
  border-radius: 8px;
  color: #e2e8f0;
  font-size: 1rem;
}
button {
  cursor: pointer;
  background: #3b82f6;
  color: #fff;
  border: 0;
  padding: 12px 18px;
  border-radius: 8px;
  font-size: 1rem;
  margin-top: 8px;
}
button:hover { background: #2563eb; }
button:disabled { opacity: 0.5; cursor: wait; }
.back { background: #475569; padding: 6px 10px; font-size: 0.85rem; }
.menu { display: grid; gap: 10px; }
.menu button { text-align: left; padding: 18px; font-size: 1.05rem; }
.error { color: #f87171; min-height: 1.2em; }
#live-status { margin-top: 14px; font-size: 0.85rem; color: #94a3b8; }

.question {
  background: #1e293b;
  border: 1px solid #334155;
  border-radius: 10px;
  padding: 14px;
  margin: 12px 0;
}
.question p.q { font-weight: 600; margin: 0 0 10px; }
.opt { display: block; margin: 6px 0; cursor: pointer; }
.opt input { display: inline; width: auto; margin-right: 8px; }

.result-card, .material-card {
  background: #1e293b;
  border: 1px solid #334155;
  border-radius: 10px;
  padding: 12px;
  margin: 8px 0;
}
.result-card { cursor: pointer; transition: border-color 0.15s; }
.result-card:hover { border-color: #64748b; }
.score-good { color: #4ade80; font-weight: 700; }
.score-bad { color: #f87171; font-weight: 700; }

/* Детальный разбор теста */
.review-header { margin-bottom: 16px; }
.review-header h3 { margin: 0 0 10px; }
.review-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; margin-bottom: 16px; }
.stat { background: #1e293b; border: 1px solid #334155; border-radius: 10px; padding: 10px; text-align: center; }
.stat-value { display: block; font-size: 1.4rem; font-weight: 700; }
.stat-label { font-size: 0.8rem; color: #94a3b8; }
.review-list { margin-top: 10px; }
.review-card { background: #1e293b; border: 1px solid #334155; border-radius: 10px; padding: 14px; margin: 12px 0; }
.review-q { font-weight: 600; margin-bottom: 10px; line-height: 1.4; }
.q-num { opacity: 0.7; margin-right: 6px; }
.review-options { list-style: none; padding: 0; margin: 0; }
.review-options li { padding: 8px 10px; border-radius: 8px; margin: 6px 0; background: #0f172a; border: 1px solid #1e293b; }
.review-options li.correct { background: rgba(74, 222, 128, 0.12); border-color: #4ade80; color: #bbf7d0; }
.review-options li.wrong { background: rgba(248, 113, 113, 0.12); border-color: #f87171; color: #fecaca; }
.review-options li.skip { opacity: 0.7; }
.opt-letter { font-weight: 700; margin-right: 6px; opacity: 0.8; }
.opt-label { font-size: 0.75rem; margin-left: 8px; padding: 2px 6px; border-radius: 6px; background: rgba(255,255,255,0.1); }
.badge { font-size: 0.75rem; padding: 3px 8px; border-radius: 12px; margin-left: 8px; display: inline-block; vertical-align: middle; }
.badge.ok { background: rgba(74, 222, 128, 0.15); color: #4ade80; }
.badge.err { background: rgba(248, 113, 113, 0.15); color: #f87171; }
.badge.skip { background: rgba(148, 163, 184, 0.15); color: #94a3b8; }

/* Офлайн-очередь */
#pending-wrap { background: #1e293b; border: 1px solid #334155; border-radius: 10px; padding: 10px 14px; font-size: 0.9rem; }
#pending-badge { background: #f59e0b; color: #0f172a; font-weight: 700; min-width: 22px; text-align: center; }
#pending-wrap button { padding: 6px 12px; font-size: 0.85rem; margin-top: 0; margin-left: 10px; }
.info { color: #60a5fa; }
.offline { color: #f87171; font-weight: 600; }