:root {
  --bg: #0d1117;
  --bg-card: #161b22;
  --bg-input: #1c2128;
  --border: #30363d;
  --text-main: #e6edf3;
  --text-muted: #7d8590;
  --primary: #4493f8;
  --radius: 10px;
  --c-normal: #38a169;
  --c-adjust: #4493f8;
  --c-piercer: #d4a847;
  --c-doctor: #e07b39;
  --c-urgent: #e05252;
}

[data-theme="light"] {
  --bg: #f6f8fa;
  --bg-card: #ffffff;
  --bg-input: #f0f2f5;
  --border: #d0d7de;
  --text-main: #1f2328;
  --text-muted: #656d76;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body { background: var(--bg); color: var(--text-main); font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif; font-size: 15px; line-height: 1.6; padding: 1.5rem 1rem 3rem; }
.tool-wrapper { max-width: 640px; margin: 0 auto; }

.tool-header { text-align: center; margin-bottom: 2rem; }
.tool-header__badge { display: inline-flex; align-items: center; gap: 0.4rem; background: rgba(68,147,248,0.1); border: 1px solid rgba(68,147,248,0.3); color: var(--primary); font-size: 0.75rem; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; padding: 0.3rem 0.8rem; border-radius: 20px; margin-bottom: 1rem; }
.tool-header h1 { font-size: 1.6rem; font-weight: 800; color: var(--text-main); margin-bottom: 0.5rem; }
.tool-header p { color: var(--text-muted); max-width: 520px; margin: 0 auto; font-size: 0.9rem; }

/* Progress bar */
.progress-wrap { margin-bottom: 1.5rem; }
.progress-label { font-size: 0.78rem; color: var(--text-muted); margin-bottom: 0.35rem; }
.progress-bar { height: 4px; background: var(--border); border-radius: 2px; }
.progress-fill { height: 100%; background: var(--primary); border-radius: 2px; transition: width 0.3s ease; }

/* Step card */
.step-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.5rem; }
.step-question { font-size: 1.05rem; font-weight: 700; color: var(--text-main); margin-bottom: 1.25rem; line-height: 1.45; }
.step-options { display: flex; flex-direction: column; gap: 0.55rem; }
.opt-btn { display: flex; align-items: center; gap: 0.75rem; background: var(--bg-input); border: 1px solid var(--border); border-radius: 8px; padding: 0.75rem 1rem; text-align: left; cursor: pointer; transition: border-color 0.15s, background 0.15s; font-size: 0.9rem; color: var(--text-main); width: 100%; }
.opt-btn:hover { border-color: var(--primary); background: rgba(68,147,248,0.06); }
.opt-icon { font-size: 1.1rem; flex-shrink: 0; }
.opt-text { flex: 1; }
.opt-sub { display: block; font-size: 0.78rem; color: var(--text-muted); margin-top: 0.1rem; }

/* Back button */
.back-btn { margin-top: 1rem; background: none; border: 1px solid var(--border); border-radius: 8px; color: var(--text-muted); font-size: 0.85rem; padding: 0.5rem 1rem; cursor: pointer; }
.back-btn:hover { border-color: var(--text-muted); color: var(--text-main); }

/* Result cards */
.result-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
.result-banner { display: flex; align-items: center; gap: 1rem; padding: 1.25rem 1.5rem; }
.result-banner.level-normal  { background: rgba(56,161,105,0.1);  border-bottom: 3px solid var(--c-normal); }
.result-banner.level-adjust  { background: rgba(68,147,248,0.1);  border-bottom: 3px solid var(--c-adjust); }
.result-banner.level-piercer { background: rgba(212,168,71,0.1);  border-bottom: 3px solid var(--c-piercer); }
.result-banner.level-doctor  { background: rgba(224,123,57,0.1);  border-bottom: 3px solid var(--c-doctor); }
.result-banner.level-urgent  { background: rgba(224,82,82,0.1);   border-bottom: 3px solid var(--c-urgent); }
.result-icon { font-size: 2.2rem; }
.result-verdict { font-size: 1.15rem; font-weight: 800; }
.result-verdict.level-normal  { color: var(--c-normal); }
.result-verdict.level-adjust  { color: var(--c-adjust); }
.result-verdict.level-piercer { color: var(--c-piercer); }
.result-verdict.level-doctor  { color: var(--c-doctor); }
.result-verdict.level-urgent  { color: var(--c-urgent); }
.result-sub { font-size: 0.82rem; color: var(--text-muted); margin-top: 0.15rem; }

.result-section { padding: 1rem 1.5rem; border-bottom: 1px solid var(--border); }
.result-section:last-child { border-bottom: none; }
.result-section-title { font-size: 0.78rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em; color: var(--text-muted); margin-bottom: 0.6rem; }
.result-body { font-size: 0.87rem; color: var(--text-muted); line-height: 1.65; }
.result-body a { color: var(--primary); }
.action-list { list-style: none; display: flex; flex-direction: column; gap: 0.45rem; }
.action-list li { display: flex; gap: 0.6rem; font-size: 0.86rem; color: var(--text-muted); line-height: 1.5; }
.action-list li::before { content: '→'; color: var(--primary); font-weight: 700; flex-shrink: 0; }

.restart-btn { width: 100%; padding: 0.75rem; background: var(--bg-input); border: 1px solid var(--border); border-radius: var(--radius); color: var(--text-muted); font-size: 0.88rem; cursor: pointer; margin-top: 1rem; transition: border-color 0.15s; }
.restart-btn:hover { border-color: var(--primary); color: var(--primary); }

.disclaimer { background: var(--bg-card); border: 1px solid var(--border); border-top: 3px solid var(--border); border-radius: var(--radius); padding: 1rem 1.25rem; font-size: 0.8rem; color: var(--text-muted); margin-top: 1.5rem; }
.disclaimer strong { color: var(--text-main); }