:root {
  color-scheme: light;
  --bg: #f8fafc;
  --card: #ffffff;
  --text: #0f172a;
  --muted: #475569;
  --primary: #2563eb;
  --primary-ghost: #e2e8ff;
  --border: #e2e8f0;
  --shadow: 0 12px 30px rgba(15, 23, 42, 0.08);
}

* {
  box-sizing: border-box;
}

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

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  background: rgba(255,255,255,0.9);
  backdrop-filter: blur(10px);
}

h1 {
  margin: 0 0 4px 0;
  font-size: 22px;
}

.subtitle {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.layout {
  display: grid;
  gap: 16px;
  padding: 16px;
  grid-template-columns: 2fr 1fr;
}

.layout > .card.sticky {
  position: sticky;
  top: 12px;
  align-self: start;
}

@media (max-width: 960px) {
  .layout {
    grid-template-columns: 1fr;
  }
  .layout > .card.sticky {
    position: static;
  }
}

/* 모바일 반응형 (480px 이하) */
@media (max-width: 480px) {
  .topbar {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
    padding: 12px 16px;
  }

  .topbar .status {
    font-size: 11px;
  }

  h1 {
    font-size: 18px;
  }

  .subtitle {
    font-size: 12px;
  }

  .layout {
    padding: 12px;
    gap: 12px;
  }

  .card {
    padding: 12px;
    border-radius: 8px;
  }

  .step {
    padding: 10px;
  }

  .step h3 {
    font-size: 15px;
    line-height: 1.4;
  }

  /* 터치 타겟 44px 이상 - 1열 풀너비 */
  .choice-btn {
    padding: 14px 16px;
    font-size: 15px;
    min-height: 48px;
    flex: 1 1 100%;
    text-align: center;
    word-break: keep-all;
    overflow: hidden;
    text-overflow: ellipsis;
  }

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

  button {
    padding: 14px 18px;
    font-size: 15px;
    min-height: 48px;
  }

  .step-nav {
    gap: 8px;
  }

  .step-nav button {
    flex: 1;
  }

  /* 결과 화면 */
  .type-summary .summary-main {
    font-size: 20px;
  }

  .axis-chip {
    padding: 8px;
  }

  .axis-chip .verdict {
    font-size: 18px;
  }

  .reco-item {
    padding: 10px;
  }

  .reco-concern {
    font-size: 15px;
  }

  .reco-description {
    font-size: 13px;
  }

  /* 진행률 - 세로 배치 */
  .progress {
    margin-bottom: 45px; /* 모바일에서 세로 배치 공간 확보 */
  }

  .progress-text {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
    justify-content: flex-start;
  }

  .progress-step,
  .progress-encourage {
    display: block;
    width: 100%;
  }

  .warning-header {
    font-size: 13px;
    padding: 8px 12px;
  }

  /* input 필드 */
  input[type="number"],
  input[type="text"] {
    width: 100%;
    padding: 12px;
    font-size: 16px; /* iOS 확대 방지 */
    border: 1px solid var(--border);
    border-radius: 8px;
  }
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px;
  box-shadow: var(--shadow);
}

.card h2 {
  margin-top: 0;
}

.steps {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.progress {
  position: relative;
  height: 12px;
  background: #e2e8f0;
  border: 1px solid var(--border);
  border-radius: 999px;
  overflow: visible;
  margin-bottom: 28px; /* progress-text 공간 확보 */
}

.progress-bar {
  height: 100%;
  background: var(--primary);
  border-radius: 999px;
  width: 0%;
  transition: width 0.2s ease;
}

.progress-text {
  margin-top: 6px;
  color: var(--muted);
  font-size: 12px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* P2: 진행률 격려 문구 */
.progress-step {
  font-weight: 600;
}

.progress-encourage {
  color: var(--primary);
  font-weight: 500;
}

.mode-toggle {
  display: flex;
  gap: 8px;
}

.small {
  font-size: 13px;
  padding: 6px 10px;
}

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

#stepsContainer {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.step {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px;
}

.step h3 {
  margin: 0 0 8px 0;
}

.question {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px;
  margin-bottom: 8px;
}

.question .title {
  font-weight: 600;
  margin-bottom: 6px;
}

.question .desc {
  color: var(--muted);
  font-size: 13px;
  margin-bottom: 6px;
}

.choices {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.choice-btn {
  border: 1px solid var(--border);
  background: #ffffff;
  color: var(--text);
  padding: 10px 12px;
  border-radius: 12px;
  cursor: pointer;
  box-shadow: 0 6px 18px rgba(37, 99, 235, 0.06);
  transition: transform 0.08s ease, box-shadow 0.12s ease;
}

.choice-btn.active {
  border-color: var(--primary);
  background: var(--primary-ghost);
  box-shadow: 0 8px 20px rgba(37, 99, 235, 0.12);
  transform: translateY(-1px);
}

.error {
  color: #fca5a5;
  font-size: 12px;
  margin-top: 4px;
}

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

button {
  border: 1px solid var(--border);
  background: #ffffff;
  color: var(--text);
  padding: 10px 14px;
  border-radius: 10px;
  cursor: pointer;
  font-weight: 600;
}

button.primary {
  background: var(--primary);
  color: #ffffff;
  border-color: transparent;
  box-shadow: 0 10px 24px rgba(37, 99, 235, 0.2);
}

button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

textarea {
  width: 100%;
  min-height: 360px;
  background: #f8fafc;
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px;
  font-family: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  font-size: 13px;
}

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

.status {
  color: var(--muted);
  font-size: 13px;
}

.status.small {
  font-size: 12px;
}

.hidden {
  display: none;
}

/* P1: 한글 요약 강조, 타입코드 서브 */
.type-summary {
  margin-bottom: 16px;
}

.type-summary .summary-main {
  font-size: 24px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
  line-height: 1.3;
}

.type-summary .summary-sub {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 14px;
}

.type-summary .summary-sub .value {
  font-weight: 600;
  letter-spacing: 1px;
}

/* P1: 레드플래그 섹션 경고 스타일 */
.step-warning {
  border-color: #fca5a5 !important;
  background: #fef2f2;
}

.warning-header {
  background: #fef2f2;
  border: 1px solid #fca5a5;
  border-radius: 8px;
  padding: 10px 14px;
  margin-bottom: 12px;
  color: #dc2626;
  font-weight: 600;
  font-size: 14px;
}

.axes {
  display: grid;
  gap: 8px;
}

.axis-chip {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: #f8fafc;
}

.axis-chip .name {
  font-weight: 700;
}

.axis-chip .verdict {
  font-size: 20px;
}

.localized {
  margin-top: 12px;
  color: var(--muted);
  font-size: 14px;
  display: grid;
  gap: 4px;
}

.axis {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px;
  display: grid;
  gap: 4px;
}

.axis .title {
  font-weight: 600;
}

.axis .bar {
  height: 8px;
  border-radius: 6px;
  background: #e2e8f0;
  overflow: hidden;
  border: 1px solid var(--border);
}

.axis .bar-fill {
  height: 100%;
  background: var(--primary);
  width: 50%;
}

.axis .meta {
  color: var(--muted);
  font-size: 12px;
}

.flags, .guidance {
  margin-top: 12px;
  border-top: 1px solid var(--border);
  padding-top: 10px;
  color: var(--muted);
  font-size: 14px;
  white-space: pre-line;
}

code {
  background: #f8fafc;
  padding: 2px 6px;
  border-radius: 6px;
  border: 1px solid var(--border);
  font-size: 12px;
}

.reco {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.reco h3 {
  margin: 0;
  font-size: 16px;
}

.reco-item {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px;
  background: rgba(255, 255, 255, 0.02);
}

.reco-concern {
  font-weight: 600;
}

/* P2: 추천 성분 한 줄 설명 */
.reco-description {
  color: var(--text);
  font-size: 13px;
  margin-top: 4px;
  line-height: 1.4;
}

.reco-ingredients {
  color: var(--muted);
  font-size: 12px;
  margin-top: 6px;
  padding-top: 6px;
  border-top: 1px dashed var(--border);
}