/* ============================================================
 * common.css — 카비용 디자인 시스템 (사이트 전체 단일 CSS)
 * 토큰·컴포넌트 명세: docs/02-설계서.md §4
 * 모바일 퍼스트 · 외부 의존성: Pretendard CDN(HTML에서 로드)만
 * ============================================================ */
:root{
  --bg:#F2F3F1;
  --card:#FFFFFF;
  --ink:#17201B;
  --ink-soft:#5A6660;
  --plate:#0E4D33;       /* 브랜드 그린 (구형 번호판) */
  --plate-ink:#F4F8F2;
  --save:#C77800;        /* 절감액 앰버 */
  --line:#DDE1DC;
  --focus:#0E4D33;
  --radius:14px;
}
*{margin:0;padding:0;box-sizing:border-box}
[hidden]{display:none!important} /* display 지정된 요소도 hidden 속성이 항상 이기도록 */
html{font-size:16px}
body{
  font-family:'Pretendard Variable',Pretendard,-apple-system,BlinkMacSystemFont,system-ui,sans-serif;
  background:var(--bg);color:var(--ink);line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
.wrap{max-width:680px;margin:0 auto;padding:0 20px 80px}

/* ---- 사이트 헤더/푸터 ---- */
header.site{padding:28px 0 8px}
.brand{font-size:.85rem;font-weight:700;letter-spacing:.18em;color:var(--plate)}
.brand a{color:inherit;text-decoration:none}
h1{font-size:1.7rem;font-weight:800;letter-spacing:-.02em;line-height:1.3;margin:10px 0 6px}
h1 .year{color:var(--plate)}
.sub{color:var(--ink-soft);font-size:.95rem}
footer.site{margin-top:40px;padding-top:20px;border-top:1px solid var(--line);font-size:.8rem;color:var(--ink-soft)}
footer.site a{color:inherit}
footer.site nav{margin-bottom:6px;display:flex;gap:14px;flex-wrap:wrap}

/* ---- 입력 카드 ---- */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:24px;margin-top:22px}
.field{margin-bottom:18px}
.field:last-child{margin-bottom:0}
label{display:block;font-size:.85rem;font-weight:700;margin-bottom:8px}
.hint{font-weight:400;color:var(--ink-soft);margin-left:6px}
input[type=number],input[type=text],input[type=email],select,textarea{
  width:100%;padding:13px 14px;font-size:1.05rem;font-family:inherit;
  border:1.5px solid var(--line);border-radius:10px;background:#FAFBFA;color:var(--ink);
  font-variant-numeric:tabular-nums;
}
input:focus,select:focus,textarea:focus{outline:2px solid var(--focus);outline-offset:1px;border-color:var(--focus)}
textarea{resize:vertical;min-height:140px;line-height:1.6}
textarea.miss{border-color:#C0392B;animation:miss-pulse 1.2s ease-in-out infinite}
.calc-btn.secondary{background:#EBEEE9;color:var(--ink);margin-top:10px}
.calc-btn.secondary:hover:not(:disabled){background:#DDE1DC}

/* ---- 세그먼트 토글 ---- */
.seg{display:flex;gap:8px}
.seg button{
  flex:1;padding:12px 8px;font-size:.95rem;font-weight:600;font-family:inherit;
  border:1.5px solid var(--line);border-radius:10px;background:#FAFBFA;color:var(--ink-soft);cursor:pointer;
}
.seg button[aria-pressed=true]{background:var(--plate);border-color:var(--plate);color:var(--plate-ink)}
.seg button:focus-visible{outline:2px solid var(--focus);outline-offset:2px}

/* ---- 결과: 번호판 프레임 (시그니처) ---- */
.plate{
  position:relative;margin-top:26px;background:var(--plate);color:var(--plate-ink);
  border-radius:16px;padding:26px 28px;text-align:center;
  border:3px solid #0A3B27;box-shadow:inset 0 0 0 2px rgba(244,248,242,.25);
}
.plate::before,.plate::after{
  content:"";position:absolute;top:14px;width:9px;height:9px;border-radius:50%;
  background:rgba(244,248,242,.45);
}
.plate::before{left:16px}
.plate::after{right:16px}
.plate .label{font-size:.8rem;letter-spacing:.14em;opacity:.85}
.plate .amount{
  font-size:2.6rem;font-weight:800;letter-spacing:-.01em;line-height:1.15;
  font-variant-numeric:tabular-nums;margin:4px 0 2px;
}
.plate .breakdown{font-size:.85rem;opacity:.85}
.reduction-badge{
  display:inline-block;margin-top:10px;padding:4px 12px;font-size:.8rem;font-weight:700;
  background:rgba(244,248,242,.16);border-radius:99px;
}

/* ---- 절감 바 차트 (CSS 전용) ---- */
.yeonnap{margin-top:26px}
.yeonnap h2{font-size:1.05rem;font-weight:800;margin-bottom:4px}
.yeonnap .note{font-size:.85rem;color:var(--ink-soft);margin-bottom:14px}
.bar-row{display:grid;grid-template-columns:52px 1fr 110px;align-items:center;gap:12px;margin-bottom:10px}
.bar-row .m{font-size:.9rem;font-weight:700}
.bar-track{height:26px;background:#E7EAE6;border-radius:7px;overflow:hidden}
.bar-fill{height:100%;background:var(--save);border-radius:7px;width:0;transition:width .5s ease}
.bar-row.best .bar-fill{background:linear-gradient(90deg,var(--save),#E09100)}
.bar-row .v{font-size:.95rem;font-weight:800;text-align:right;font-variant-numeric:tabular-nums;color:var(--save)}
.bar-row .v small{display:block;font-size:.72rem;font-weight:500;color:var(--ink-soft)}
.best-tag{font-size:.7rem;font-weight:800;color:var(--save);letter-spacing:.06em}

/* ---- 본문 콘텐츠 ---- */
article{margin-top:44px}
article h2{font-size:1.15rem;font-weight:800;margin:32px 0 10px;letter-spacing:-.01em}
article p{font-size:.95rem;color:#2A342E;margin-bottom:12px}
article ul{font-size:.95rem;color:#2A342E;margin:0 0 12px 20px}
article table{width:100%;border-collapse:collapse;font-size:.9rem;margin:12px 0}
article th,article td{padding:10px 12px;border:1px solid var(--line);text-align:left}
article th{background:#EBEEE9;font-weight:700}
article td.num{text-align:right;font-variant-numeric:tabular-nums}
.disclaimer{
  margin-top:36px;padding:16px 18px;background:#EBEEE9;border-radius:10px;
  font-size:.8rem;color:var(--ink-soft);
}

/* ---- 관련 도구 내부 링크 ---- */
.related{margin-top:32px}
.related h2{font-size:1.05rem;font-weight:800;margin-bottom:12px}
.related ul{list-style:none;display:grid;gap:8px}
.related a{
  display:block;padding:14px 16px;background:var(--card);border:1px solid var(--line);
  border-radius:10px;color:var(--ink);text-decoration:none;font-size:.92rem;font-weight:600;
}
.related a:hover{border-color:var(--plate)}
.related a .desc{display:block;font-weight:400;font-size:.82rem;color:var(--ink-soft);margin-top:2px}
.related .soon{opacity:.55;pointer-events:none}
.related .soon-tag{font-size:.72rem;font-weight:700;color:var(--save);margin-left:6px}

/* ---- 랜딩: 히어로 + 도구 카드 ---- */
.hero{padding:44px 0 10px;text-align:left}
.hero h1{font-size:2rem}
.tools{margin-top:26px;display:grid;gap:12px}
.tool-card{
  display:block;padding:20px 22px;background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius);color:var(--ink);text-decoration:none;
}
.tool-card:hover{border-color:var(--plate);box-shadow:0 2px 10px rgba(14,77,51,.08)}
.tool-card h2{font-size:1.05rem;font-weight:800;margin-bottom:4px}
.tool-card p{font-size:.88rem;color:var(--ink-soft)}
.tool-card.soon{opacity:.55;pointer-events:none}
.tool-card .soon-tag{
  display:inline-block;margin-left:8px;padding:2px 8px;font-size:.7rem;font-weight:700;
  color:var(--save);border:1px solid currentColor;border-radius:99px;vertical-align:2px;
}

/* ---- 입력 그룹 (도구 5처럼 입력이 많은 페이지) ---- */
.field-group{margin-bottom:22px}
.field-group:last-child{margin-bottom:0}
.field-group>h3{
  font-size:.8rem;font-weight:800;letter-spacing:.08em;color:var(--plate);
  margin-bottom:12px;padding-bottom:6px;border-bottom:1px solid var(--line);
}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:10px}

/* ---- 도넛 차트 (CSS conic-gradient 전용, 외부 라이브러리 금지) ---- */
:root{
  --c-tax:#0E4D33;    /* 세금 */
  --c-fuel:#C77800;   /* 유류비 */
  --c-ins:#5A8A70;    /* 보험 */
  --c-maint:#A9B4AD;  /* 정비 */
}
.donut-wrap{display:flex;align-items:center;gap:24px;margin-top:22px;flex-wrap:wrap}
.donut{
  width:150px;height:150px;border-radius:50%;flex:none;
  background:conic-gradient(var(--line) 0 100%); /* JS가 inline style로 갱신 */
}
.donut .hole{
  width:100%;height:100%;border-radius:50%;display:flex;align-items:center;justify-content:center;
  background:radial-gradient(closest-side,var(--bg) 62%,transparent 63%);
  font-size:.78rem;font-weight:700;color:var(--ink-soft);text-align:center;line-height:1.4;
}
.legend{list-style:none;flex:1;min-width:200px;display:grid;gap:8px}
.legend li{display:grid;grid-template-columns:14px 1fr auto;align-items:center;gap:10px;font-size:.9rem}
.legend .sw{width:14px;height:14px;border-radius:4px}
.legend .v{font-weight:800;font-variant-numeric:tabular-nums}
.legend .v small{font-weight:500;color:var(--ink-soft);margin-left:4px}

/* ---- 비교 결과 보조 문구 ---- */
.vs-note{margin-top:14px;font-size:.85rem;color:var(--ink-soft)}

/* ---- 검색 자동완성 (순수 JS, 외부 라이브러리 금지) ---- */
.autocomplete{position:relative}
.ac-list{
  list-style:none;position:absolute;top:calc(100% + 4px);left:0;right:0;z-index:20;
  background:var(--card);border:1.5px solid var(--line);border-radius:10px;
  max-height:280px;overflow-y:auto;box-shadow:0 6px 20px rgba(23,32,27,.12);
}
.ac-list li{padding:10px 14px;cursor:pointer;font-size:.9rem;font-weight:600}
.ac-list li:hover{background:#EBEEE9}
.ac-list li .meta{display:block;font-size:.78rem;font-weight:400;color:var(--ink-soft)}
.ac-list li.ac-empty{cursor:default;font-weight:400;color:var(--ink-soft)}
.ac-list li.ac-empty:hover{background:none}

/* ---- 플로팅 문의 버튼 + 모달 ---- */
.inquiry-fab{
  position:fixed;right:18px;bottom:18px;z-index:90;
  padding:13px 18px;font-size:.95rem;font-weight:800;font-family:inherit;cursor:pointer;
  border:none;border-radius:99px;background:var(--plate);color:var(--plate-ink);
  box-shadow:0 4px 14px rgba(14,77,51,.35);
}
.inquiry-fab:hover{background:#0B3F2A}
.modal-backdrop{
  position:fixed;inset:0;z-index:100;background:rgba(23,32,27,.45);
  display:flex;align-items:flex-end;justify-content:center;padding:0;
}
.modal{
  width:100%;max-width:480px;max-height:86vh;display:flex;flex-direction:column;
  background:var(--bg);border-radius:18px 18px 0 0;overflow:hidden;
}
.modal-head{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 18px;background:var(--plate);color:var(--plate-ink);
}
.modal-head h2{font-size:1rem;font-weight:800}
.modal-head .close{
  border:none;background:none;color:var(--plate-ink);font-size:1.3rem;cursor:pointer;
  line-height:1;padding:4px 8px;font-family:inherit;
}
.modal-body{padding:4px 16px 18px;overflow-y:auto}
@media (min-width:560px){
  .modal-backdrop{align-items:center;padding:20px}
  .modal{border-radius:18px}
}

/* ---- 문의 챗봇 (/contact/) ---- */
.chat{margin-top:22px;display:flex;flex-direction:column;gap:10px;min-height:300px}
.msg{max-width:86%;padding:12px 16px;border-radius:16px;font-size:.95rem;line-height:1.55;white-space:pre-line}
.msg.bot{align-self:flex-start;background:var(--card);border:1px solid var(--line);border-bottom-left-radius:4px}
.msg.user{align-self:flex-end;background:var(--plate);color:var(--plate-ink);border-bottom-right-radius:4px}
.msg.typing{display:flex;gap:5px;align-items:center;padding:14px 18px}
.msg.typing i{width:7px;height:7px;border-radius:50%;background:var(--ink-soft);opacity:.4;animation:blink 1s infinite}
.msg.typing i:nth-child(2){animation-delay:.2s}
.msg.typing i:nth-child(3){animation-delay:.4s}
@keyframes blink{0%,100%{opacity:.25}50%{opacity:.9}}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin:2px 0 4px}
.chips button{
  padding:9px 15px;font-size:.9rem;font-weight:600;font-family:inherit;cursor:pointer;
  border:1.5px solid var(--plate);border-radius:99px;background:var(--card);color:var(--plate);
}
.chips button:hover{background:var(--plate);color:var(--plate-ink)}
.chips button:focus-visible{outline:2px solid var(--focus);outline-offset:2px}
.chat-input{display:flex;gap:8px;margin-top:4px;align-items:flex-end}
.chat-input textarea,.chat-input input{flex:1}
.chat-input .send{
  flex:none;padding:13px 20px;font-size:.95rem;font-weight:800;font-family:inherit;cursor:pointer;
  border:none;border-radius:10px;background:var(--plate);color:var(--plate-ink);
}
.chat-input .send:disabled{background:#C9CFC9;color:#78827C;cursor:not-allowed}
@media (prefers-reduced-motion:reduce){.msg.typing i{animation:none;opacity:.6}}

/* ---- 필수 입력 미입력 표시 (assets/ui.js markMissing) ---- */
@keyframes miss-pulse{
  0%,100%{border-color:#C0392B;box-shadow:0 0 0 0 rgba(192,57,43,.25)}
  50%{border-color:#E74C3C;box-shadow:0 0 0 4px rgba(192,57,43,.12)}
}
input.miss,select.miss{
  border-color:#C0392B;
  animation:miss-pulse 1.2s ease-in-out infinite;
}
input.miss:focus,select.miss:focus{outline-color:#C0392B}

/* ---- 계산하기 버튼 (미입력 시 비활성) ---- */
.calc-btn{
  width:100%;margin-top:20px;padding:15px;font-size:1.05rem;font-weight:800;font-family:inherit;
  border:none;border-radius:12px;background:var(--plate);color:var(--plate-ink);cursor:pointer;
}
.calc-btn:hover:not(:disabled){background:#0B3F2A}
.calc-btn:disabled{background:#C9CFC9;color:#78827C;cursor:not-allowed}
.calc-btn:focus-visible{outline:2px solid var(--focus);outline-offset:2px}

/* ---- 반응형/모션 ---- */
@media (max-width:480px){
  h1{font-size:1.45rem}
  .hero h1{font-size:1.6rem}
  .plate .amount{font-size:2.1rem}
  .bar-row{grid-template-columns:44px 1fr 96px;gap:8px}
}
@media (prefers-reduced-motion:reduce){
  .bar-fill{transition:none}
  input.miss,select.miss{animation:none}   /* 깜빡임 대신 빨간 테두리만 */
}