:root {
  --bg: #e9efe9;
  --card: #f8fbf8;
  --line: #c8d7cb;
  --text: #223228;
  --muted: #6b7f71;
  --accent: #5f8f6f;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Noto Sans SC", sans-serif;
  background: var(--bg);
  color: var(--text);
}

.app {
  max-width: 760px;
  margin: 20px auto;
  padding: 0 12px 24px;
}

.card {
  display: none;
  background: var(--card);
  border: 2px solid var(--line);
  border-radius: 20px;
  padding: 20px;
  box-shadow: 0 6px 16px rgba(0,0,0,.04);
}
.card.active { display: block; }

h1, h2, h3 { margin: 0 0 12px; }
.subtitle { color: var(--muted); margin-top: -4px; }

ul { padding-left: 20px; }

button {
  border: none;
  background: var(--accent);
  color: white;
  border-radius: 12px;
  padding: 12px 16px;
  font-size: 15px;
  cursor: pointer;
}
button:disabled { opacity: .5; cursor: not-allowed; }
button.ghost {
  background: transparent;
  border: 1px solid var(--line);
  color: var(--text);
}
input {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px 12px;
  font-size: 14px;
  background: white;
}

.quiz-header {
  display: grid;
  gap: 8px;
  margin-bottom: 14px;
}
.progress-text { text-align: right; color: var(--muted); }
.progress-bar {
  width: 100%;
  height: 10px;
  border-radius: 999px;
  background: #dbe6dd;
  overflow: hidden;
}
#progress-fill {
  height: 100%;
  width: 0;
  background: var(--accent);
  transition: width .25s ease;
}

.pill-row {
  display: flex;
  gap: 8px;
  margin-bottom: 10px;
}
.pill {
  font-size: 13px;
  border: 1px solid var(--line);
  padding: 6px 10px;
  border-radius: 999px;
}
.pill.muted { color: var(--muted); }

#question-text {
  line-height: 1.75;
  font-size: 18px;
  margin-bottom: 14px;
}

.options { display: grid; gap: 10px; }
.option {
  border: 2px solid var(--line);
  border-radius: 14px;
  background: white;
  text-align: left;
  color: var(--text);
  padding: 12px;
}
.option.active {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px #d8eadf inset;
}

.quiz-footer {
  display: flex;
  justify-content: space-between;
  margin-top: 16px;
}

.result-block {
  border-top: 1px dashed var(--line);
  margin-top: 12px;
  padding-top: 12px;
}
.ai-box {
  margin: 10px 0 8px;
  padding: 12px;
  border: 1px dashed var(--line);
  border-radius: 12px;
  background: #f3f8f4;
}
.ai-row {
  display: flex;
  gap: 8px;
  margin-bottom: 8px;
}
.ai-tip {
  color: var(--muted);
  font-size: 13px;
  margin: 4px 0 10px;
}
.verdict {
  background: #edf5ef;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px;
}
.result-actions {
  display: flex;
  gap: 8px;
  margin-top: 18px;
}
.disclaimer { margin-top: 10px; color: var(--muted); font-size: 13px; }

@media (max-width: 600px) {
  .app { margin-top: 10px; }
  #question-text { font-size: 17px; }
  .ai-row { flex-direction: column; }
}