/* ====== 색상 변수 (다크/라이트 자동) ====== */
:root {
  --bg: #f8fafc;
  --surface: #ffffff;
  --surface-2: #f1f5f9;
  --text: #0f172a;
  --muted: #64748b;
  --border: #e2e8f0;
  --primary: #2563eb;
  --primary-text: #ffffff;
  --success: #16a34a;
  --success-bg: #dcfce7;
  --danger: #dc2626;
  --danger-bg: #fee2e2;
  --warning: #d97706;
  --warning-bg: #fef3c7;
  --info: #0284c7;
  --info-bg: #e0f2fe;
  --shadow: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.04);
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f172a;
    --surface: #1e293b;
    --surface-2: #334155;
    --text: #f8fafc;
    --muted: #94a3b8;
    --border: #334155;
    --primary: #3b82f6;
    --success: #22c55e;
    --success-bg: #14532d;
    --danger: #ef4444;
    --danger-bg: #7f1d1d;
    --warning: #f59e0b;
    --warning-bg: #78350f;
    --info: #38bdf8;
    --info-bg: #0c4a6e;
    --shadow: 0 1px 3px rgba(0,0,0,0.3);
  }
}

* { box-sizing: border-box; }
html, body {
  margin: 0; padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Pretendard",
               "Noto Sans KR", "Apple SD Gothic Neo", sans-serif;
  font-size: 15px;
  line-height: 1.55;
}

/* ====== 상단 바 ====== */
.topbar {
  position: sticky; top: 0;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 12px 16px;
  padding-top: max(12px, env(safe-area-inset-top));
  display: flex;
  align-items: center;
  justify-content: space-between;
  z-index: 100;
}
.brand { display: flex; align-items: center; gap: 10px; }
.brand .logo { font-size: 24px; }
.brand h1 { margin: 0; font-size: 16px; font-weight: 700; }
.brand p  { margin: 0; font-size: 11px; color: var(--muted); }

.icon-btn {
  background: none; border: none;
  font-size: 20px; cursor: pointer;
  padding: 8px; border-radius: 8px;
  color: var(--text);
}
.icon-btn:hover { background: var(--surface-2); }

main {
  max-width: 720px;
  margin: 0 auto;
  padding: 16px;
  padding-bottom: max(80px, env(safe-area-inset-bottom));
}

/* ====== 검색 영역 ====== */
.search-area {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 14px;
  box-shadow: var(--shadow);
}
.search-box {
  display: flex; gap: 8px;
  align-items: stretch;
}
#queryInput {
  flex: 1;
  resize: vertical;
  padding: 12px 14px;
  font-size: 15px;
  font-family: inherit;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--surface-2);
  color: var(--text);
  outline: none;
  min-height: 60px;
}
#queryInput:focus { border-color: var(--primary); }

button {
  font-family: inherit;
  font-size: 14px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  padding: 10px 16px;
  cursor: pointer;
  transition: background 0.15s;
}
button:hover { background: var(--surface-2); }
button.primary {
  background: var(--primary);
  color: var(--primary-text);
  border-color: var(--primary);
  font-weight: 600;
}
button.primary:hover { filter: brightness(1.05); }

#searchBtn { min-width: 70px; }

.mode-row {
  display: flex; align-items: center; gap: 12px;
  margin-top: 12px;
  flex-wrap: wrap;
}
.toggle {
  display: flex; align-items: center; gap: 6px;
  font-size: 13px;
  cursor: pointer;
}
.toggle input { accent-color: var(--primary); }
.hint { font-size: 12px; color: var(--muted); }

/* 빠른 필터 칩 */
.quick-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 12px;
}
.chip {
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface-2);
  font-size: 13px;
}
.chip:hover { border-color: var(--primary); color: var(--primary); }

/* ====== 결과 ====== */
.results { margin-top: 16px; display: flex; flex-direction: column; gap: 12px; }

.result-block {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 14px 16px;
  box-shadow: var(--shadow);
}
.result-block h3 {
  margin: 0 0 10px 0;
  font-size: 14px;
  display: flex; align-items: center; gap: 6px;
}

/* details/summary — 사례집 근거 접기 */
.case-details > summary {
  cursor: pointer;
  list-style: none;
  padding: 4px 0;
  font-size: 14px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 6px;
  user-select: none;
}
.case-details > summary::-webkit-details-marker { display: none; }
.case-details > summary::before {
  content: "▶";
  font-size: 11px;
  color: var(--muted);
  transition: transform 0.15s;
}
.case-details[open] > summary::before {
  transform: rotate(90deg);
}
.case-details > summary:hover { color: var(--primary); }
.case-details .case-groups {
  margin-top: 8px;
  animation: fadeIn 0.2s;
}
@keyframes fadeIn { from { opacity: 0; transform: translateY(-4px); } to { opacity: 1; transform: translateY(0); } }

/* AI 블록 강조 — 결론을 가장 눈에 띄게 */
.ai-block {
  border-color: var(--primary) !important;
  border-width: 2px !important;
  background: linear-gradient(135deg, var(--surface) 0%, color-mix(in srgb, var(--primary) 4%, var(--surface)) 100%);
}

.case-card {
  border-left: 3px solid var(--border);
  padding: 10px 12px;
  margin: 8px 0;
  border-radius: 0 8px 8px 0;
  background: var(--surface-2);
  font-size: 14px;
}
.case-card.allowed { border-left-color: var(--success); background: var(--success-bg); }
.case-card.forbidden { border-left-color: var(--danger); background: var(--danger-bg); }
.case-card.law_summary { border-left-color: var(--info); background: var(--info-bg); }
.case-card.precedent { border-left-color: var(--warning); background: var(--warning-bg); }

.case-meta {
  font-size: 11px;
  color: var(--muted);
  margin-bottom: 6px;
  display: flex; flex-wrap: wrap; gap: 6px;
}
.badge {
  display: inline-block;
  padding: 1px 8px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 600;
}
.badge.allowed { background: var(--success); color: white; }
.badge.forbidden { background: var(--danger); color: white; }
.badge.law_summary { background: var(--info); color: white; }
.badge.precedent { background: var(--warning); color: white; }
.badge.outline { background: transparent; border: 1px solid var(--border); color: var(--muted); }

.case-text { white-space: pre-wrap; word-break: keep-all; }
.case-caveat {
  margin-top: 6px; padding-top: 6px;
  border-top: 1px dashed var(--border);
  font-size: 13px;
  color: var(--muted);
}
.case-caveat::before { content: "▸ 단서: "; font-weight: 600; color: var(--warning); }

/* ====== 안내/로딩 ====== */
.welcome {
  margin-top: 16px;
  padding: 16px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  font-size: 14px;
}
.welcome h2 { margin: 0 0 8px 0; font-size: 15px; }
.welcome ul { margin: 8px 0; padding-left: 18px; }
.welcome li { margin: 6px 0; }
.disclaimer {
  margin-top: 12px;
  padding: 10px;
  background: var(--warning-bg);
  border-radius: 8px;
  font-size: 13px;
}

.loading {
  text-align: center;
  padding: 40px 16px;
}
.loading.hidden { display: none; }
.spinner {
  width: 32px; height: 32px;
  border: 3px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin: 0 auto 12px;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ====== 모달 ====== */
.modal {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.5);
  display: flex; align-items: center; justify-content: center;
  padding: 16px;
  z-index: 1000;
}
.modal.hidden { display: none; }
.modal-card {
  background: var(--surface);
  border-radius: 14px;
  padding: 20px;
  max-width: 420px;
  width: 100%;
  max-height: 90vh;
  overflow: auto;
}
.modal-card h2 { margin: 0 0 16px 0; }
.modal-card label {
  display: block;
  margin-bottom: 14px;
}
.modal-card label > span {
  display: block;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 4px;
}
.modal-card label > small {
  display: block;
  font-size: 11px;
  color: var(--muted);
  margin-top: 4px;
}
.modal-card input[type=password],
.modal-card input[type=text] {
  width: 100%;
  padding: 10px 12px;
  font-size: 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface-2);
  color: var(--text);
  font-family: monospace;
}
.modal-card label.toggle {
  flex-direction: row;
  align-items: center;
}
.modal-actions {
  display: flex; gap: 8px;
  margin-top: 16px;
}
.modal-actions button { flex: 1; }
.legal {
  font-size: 11px;
  color: var(--muted);
  margin-top: 12px;
}

/* ====== AI 답변 ====== */
.ai-answer { font-size: 14.5px; line-height: 1.6; }
.ai-answer h3, .ai-answer h4 {
  margin: 14px 0 6px 0;
  font-size: 14px;
  font-weight: 700;
  color: var(--text);
}
.ai-answer p { margin: 6px 0; }
.ai-answer ul { padding-left: 20px; margin: 6px 0; }
.ai-answer li { margin: 3px 0; }
.ai-answer code {
  background: var(--surface-2);
  padding: 1px 5px;
  border-radius: 4px;
  font-size: 13px;
  font-family: monospace;
}
.ai-sources {
  margin-top: 12px;
  padding-top: 10px;
  border-top: 1px solid var(--border);
  font-size: 13px;
}
.ai-sources b { display: block; margin-bottom: 6px; }
.ai-sources a {
  display: block;
  padding: 4px 0;
  color: var(--info);
  text-decoration: none;
  word-break: break-all;
}
.ai-sources a:hover { text-decoration: underline; }

.hidden { display: none; }