:root {
  --bg: #0b1220;
  --card: #101a2f;
  --text: #e7eefc;
  --muted: #9bb0d0;
  --line: rgba(255, 255, 255, 0.12);
  --ok: #30c48d;
  --bad: #ff5b6e;
  --btn: rgba(255, 255, 255, 0.08);
  --btn2: rgba(255, 255, 255, 0.12);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  background: radial-gradient(1000px 800px at 30% -10%, rgba(62, 84, 255, 0.35), transparent 70%),
    radial-gradient(900px 700px at 100% 0%, rgba(48, 196, 141, 0.25), transparent 60%),
    var(--bg);
  color: var(--text);
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji",
    "Segoe UI Emoji";
}

.app {
  max-width: 920px;
  margin: 0 auto;
  padding: 18px;
}

.header {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 14px;
}

.title {
  font-size: 20px;
  font-weight: 700;
}

.meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  justify-content: space-between;
}

.controls {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
}

select,
input,
button {
  background: var(--btn);
  border: 1px solid var(--line);
  color: var(--text);
  padding: 8px 10px;
  border-radius: 10px;
  cursor: pointer;
}

input {
  cursor: text;
  width: 86px;
}

input::placeholder {
  color: rgba(231, 238, 252, 0.55);
}

button:hover {
  background: var(--btn2);
}

button.primary {
  background: rgba(62, 84, 255, 0.35);
  border-color: rgba(62, 84, 255, 0.6);
}

.jump {
  display: flex;
  gap: 6px;
  align-items: center;
}

.exam-config {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
}

.cfg {
  display: flex;
  gap: 6px;
  align-items: center;
  padding: 6px 8px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(0, 0, 0, 0.12);
}

.cfg label {
  color: var(--muted);
  font-size: 12px;
}

.exam-status {
  margin-top: 6px;
  color: var(--muted);
  font-size: 12px;
}

.main {
  display: flex;
  justify-content: center;
}

.card {
  width: 100%;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.02));
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 16px;
  backdrop-filter: blur(6px);
}

.qhead {
  display: flex;
  gap: 10px;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}

.tag {
  font-size: 12px;
  color: var(--muted);
  border: 1px solid var(--line);
  padding: 4px 8px;
  border-radius: 999px;
}

.prompt {
  white-space: pre-wrap;
  font-size: 16px;
  line-height: 1.5;
  margin: 10px 0 14px;
}

.options {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.opt {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  background: rgba(0, 0, 0, 0.15);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 10px;
}

.opt label {
  cursor: pointer;
  width: 100%;
}

.actions {
  display: flex;
  gap: 8px;
  margin-top: 14px;
  flex-wrap: wrap;
}

.result {
  margin-top: 12px;
  padding: 10px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: rgba(0, 0, 0, 0.14);
  min-height: 44px;
}

.result.ok {
  border-color: rgba(48, 196, 141, 0.5);
}

.result.bad {
  border-color: rgba(255, 91, 110, 0.55);
}

.wrong-actions {
  display: flex;
  justify-content: flex-end;
  margin-top: 10px;
}

.footer {
  margin-top: 12px;
  color: var(--muted);
  font-size: 12px;
}