/* ==========================================================================
   components.css — 히어로 · 카드 · 계산기 UI · 수식 · 그래프 · 판정표시
   계산기 페이지도 이 파일을 그대로 씁니다 (sdc- 접두사로 충돌 없음).
   ========================================================================== */

/* ==========================================================================
   1. 히어로
   ========================================================================== */
.sdc-hero {
  position: relative; overflow: hidden;
  background:
    radial-gradient(900px 460px at 78% 8%, rgba(224, 160, 32, .16), transparent 62%),
    radial-gradient(760px 520px at 12% 88%, rgba(27, 42, 94, .09), transparent 60%),
    var(--bg-soft);
  border-bottom: 1px solid var(--line);
  padding-block: clamp(44px, 6vw, 84px);
}
/* 로고의 회로·격자 모티브를 옅은 배경 패턴으로 */
.sdc-hero::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image:
    linear-gradient(rgba(27, 42, 94, .045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(27, 42, 94, .045) 1px, transparent 1px);
  background-size: 62px 62px;
  mask-image: radial-gradient(ellipse 78% 68% at 50% 42%, #000 35%, transparent 78%);
}
.sdc-hero__inner { position: relative; display: grid; gap: clamp(30px, 4vw, 54px); grid-template-columns: 1fr 1fr; align-items: center; }
@media (max-width: 940px) { .sdc-hero__inner { grid-template-columns: 1fr; } }

.sdc-hero__title { font-size: var(--fs-display); margin-bottom: .38em; }
.sdc-hero__title em { font-style: normal; color: var(--gold-text); }
.sdc-hero__sub { font-size: var(--fs-lead); color: var(--ink-soft); max-width: 46ch; }
.sdc-hero__acts { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 26px; }
.sdc-hero__note { margin-top: 18px; font-size: var(--fs-xs); color: var(--muted); }

/* ==========================================================================
   2. 카드
   ========================================================================== */
.sdc-grid { display: grid; gap: clamp(16px, 2vw, 24px); }
.sdc-grid--2 { grid-template-columns: repeat(2, 1fr); }
.sdc-grid--3 { grid-template-columns: repeat(3, 1fr); }
.sdc-grid--4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 980px) { .sdc-grid--3, .sdc-grid--4 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 620px) { .sdc-grid--2, .sdc-grid--3, .sdc-grid--4 { grid-template-columns: 1fr; } }

.sdc-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--r-lg);
  padding: clamp(20px, 2.4vw, 30px);
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease), transform var(--dur) var(--ease);
}
a.sdc-card:hover { border-color: var(--navy-100); box-shadow: var(--sh); transform: translateY(-3px); text-decoration: none; }
.sdc-card__ico {
  width: 46px; height: 46px; display: grid; place-items: center; margin-bottom: 16px;
  background: var(--gold-100); border-radius: var(--r); color: var(--gold-text);
}
.sdc-card h3 { margin-bottom: .45em; color: var(--navy); }
.sdc-card p { color: var(--ink-soft); font-size: var(--fs-sm); margin-bottom: 0; }
.sdc-card__more { display: inline-block; margin-top: 14px; font-size: var(--fs-sm); font-weight: 700; color: var(--navy-600); }

/* 계산기 카드 — 예상 소요시간·입력개수를 앞에 표시해 진입장벽을 낮춘다 */
.sdc-toolcard__meta {
  display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 14px;
  font-size: var(--fs-xs); color: var(--muted);
}
.sdc-chip {
  display: inline-flex; align-items: center; gap: 5px; padding: 3px 10px;
  background: var(--navy-050); border-radius: var(--r-pill); font-weight: 600; color: var(--navy-600);
}
.sdc-chip--gold { background: var(--gold-100); color: var(--gold-text); }
.sdc-chip--soon { background: var(--line-soft); color: var(--muted); }

/* ==========================================================================
   3. 계산기 UI  (히어로 미니계산기 · 도구 페이지 공용)
   ========================================================================== */
.sdc-calc {
  background: #fff; border: 1px solid var(--line); border-radius: var(--r-lg);
  box-shadow: var(--sh-lg); padding: clamp(20px, 2.6vw, 30px);
}
.sdc-calc__title { display: flex; align-items: center; gap: 9px; font-size: var(--fs-h3); color: var(--navy); margin-bottom: 4px; }
.sdc-calc__hint { font-size: var(--fs-xs); color: var(--muted); margin-bottom: 18px; }

.sdc-field { margin-bottom: 14px; }
.sdc-field > label { display: block; font-size: var(--fs-sm); font-weight: 700; color: var(--ink); margin-bottom: 6px; }
.sdc-field__help { display: block; font-size: var(--fs-xs); font-weight: 400; color: var(--muted); margin-top: 2px; }
.sdc-input, .sdc-select {
  width: 100%; padding: 12px 14px; font: inherit; font-size: 1.0625rem;
  color: var(--ink); background: #fff;
  border: 1px solid var(--line); border-radius: var(--r); transition: border-color .2s;
}
.sdc-input:focus, .sdc-select:focus { border-color: var(--navy-600); }
.sdc-input::placeholder { color: #AEB6C6; }
.sdc-unit { position: relative; }
.sdc-unit .sdc-input { padding-right: 62px; }
.sdc-unit__tag {
  position: absolute; right: 14px; top: 50%; transform: translateY(-50%);
  font-size: var(--fs-sm); font-weight: 700; color: var(--muted); pointer-events: none;
}
.sdc-row2 { display: grid; gap: 12px; grid-template-columns: 1fr 1fr; }
@media (max-width: 460px) { .sdc-row2 { grid-template-columns: 1fr; } }

/* 접히는 고급 입력 — 기본 입력은 최소로, 정밀 입력은 숨긴다 */
.sdc-more { margin: 6px 0 16px; border-top: 1px solid var(--line-soft); padding-top: 12px; }
.sdc-more > summary {
  cursor: pointer; list-style: none; font-size: var(--fs-sm); font-weight: 700; color: var(--navy-600);
  display: flex; align-items: center; gap: 6px;
}
.sdc-more > summary::-webkit-details-marker { display: none; }
.sdc-more > summary::before { content: "▸"; transition: transform .2s; }
.sdc-more[open] > summary::before { transform: rotate(90deg); }
.sdc-more__body { padding-top: 14px; }

/* ---------- 판정 결과 ---------- */
.sdc-verdict {
  margin-top: 18px; padding: 18px 20px; border-radius: var(--r);
  border: 1px solid var(--line); background: var(--bg-soft);
}
.sdc-verdict[hidden] { display: none; }
.sdc-verdict__flag {
  display: inline-flex; align-items: center; gap: 7px; padding: 5px 13px; border-radius: var(--r-pill);
  font-size: var(--fs-xs); font-weight: 800; letter-spacing: .02em; margin-bottom: 12px;
}
.sdc-verdict--ok   { border-color: #BFE3CC; background: var(--ok-bg); }
.sdc-verdict--ok   .sdc-verdict__flag { background: var(--ok); color: #fff; }
.sdc-verdict--warn { border-color: #EDD6AC; background: var(--warn-bg); }
.sdc-verdict--warn .sdc-verdict__flag { background: var(--warn); color: #fff; }
.sdc-verdict--bad  { border-color: #EFC4C4; background: var(--bad-bg); }
.sdc-verdict--bad  .sdc-verdict__flag { background: var(--bad); color: #fff; }
/* 위쪽으로 크게 벗어난 경우 — 고장이 아니라 입력 오류 신호라 네이비로 구분 */
.sdc-verdict--high { border-color: var(--navy-100); background: var(--navy-050); }
.sdc-verdict--high .sdc-verdict__flag { background: var(--navy); color: #fff; }
.sdc-verdict__num { font-size: clamp(1.9rem, 4.5vw, 2.6rem); font-weight: 800; line-height: 1.1; color: var(--navy); letter-spacing: -.03em; }
.sdc-verdict__num small { font-size: .42em; font-weight: 700; color: var(--muted); margin-left: 5px; }
.sdc-verdict__say { margin: 10px 0 0; font-size: var(--fs-sm); color: var(--ink-soft); }
.sdc-verdict__say strong { color: var(--ink); }

/* 기대범위 대비 위치를 보여주는 가로 게이지 */
.sdc-gauge { margin: 16px 0 4px; }
.sdc-gauge__bar {
  position: relative; height: 12px; border-radius: var(--r-pill);
  background: linear-gradient(90deg, var(--bad-bg) 0%, var(--warn-bg) 34%, var(--ok-bg) 50%, var(--warn-bg) 66%, var(--bad-bg) 100%);
  border: 1px solid var(--line);
}
.sdc-gauge__band { position: absolute; top: -1px; bottom: -1px; background: rgba(21, 128, 61, .17); border-inline: 1px solid rgba(21, 128, 61, .45); }
.sdc-gauge__pin {
  position: absolute; top: 50%; width: 3px; height: 24px; margin-left: -1.5px;
  background: var(--navy); border-radius: 2px; transform: translateY(-50%);
  transition: left .5s var(--ease);
}
.sdc-gauge__scale { display: flex; justify-content: space-between; margin-top: 7px; font-size: var(--fs-xs); color: var(--muted); }

/* ==========================================================================
   4. 수식 표시  (계산 근거 공개용)
   ========================================================================== */
.sdc-formula {
  margin: 0 0 18px; padding: 20px 22px;
  background: var(--navy-050); border: 1px solid var(--navy-100);
  border-left: 4px solid var(--navy); border-radius: 0 var(--r) var(--r) 0;
  overflow-x: auto;
}
.sdc-formula__eq {
  font-family: var(--font-mono); font-size: clamp(.9rem, 1.6vw, 1.05rem);
  color: var(--navy-800); white-space: nowrap; line-height: 2;
}
.sdc-formula__eq b { color: var(--gold-text); }
.sdc-formula__where { margin: 12px 0 0; font-size: var(--fs-xs); color: var(--ink-soft); line-height: 1.9; white-space: normal; }
.sdc-formula__where code { font-family: var(--font-mono); background: #fff; padding: 1px 6px; border-radius: 4px; border: 1px solid var(--navy-100); }

/* 한계·주의 — 신뢰의 핵심이라 눈에 띄게 */
.sdc-caveat {
  margin: 0 0 18px; padding: 16px 20px; border-radius: var(--r);
  background: var(--warn-bg); border: 1px solid #EDD6AC; font-size: var(--fs-sm); color: #6B4900;
}
.sdc-caveat strong { color: #4A3200; }
.sdc-caveat p:last-child { margin-bottom: 0; }

/* 출처 표기 */
.sdc-source { font-size: var(--fs-xs); color: var(--muted); }
.sdc-source b { color: var(--ink-soft); }

/* ==========================================================================
   5. 그래프 · 표
   ========================================================================== */
.sdc-figure { margin: 0 0 20px; }
.sdc-figure svg { width: 100%; height: auto; }
.sdc-figure figcaption { margin-top: 10px; font-size: var(--fs-xs); color: var(--muted); }

.sdc-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; }
.sdc-table { width: 100%; border-collapse: collapse; font-size: var(--fs-sm); min-width: 520px; }
.sdc-table th, .sdc-table td { padding: 12px 14px; text-align: left; border-bottom: 1px solid var(--line); }
.sdc-table thead th { background: var(--navy-050); color: var(--navy); font-size: var(--fs-xs); letter-spacing: .04em; text-transform: uppercase; }
.sdc-table td.num, .sdc-table th.num { text-align: right; font-variant-numeric: tabular-nums; }

/* ==========================================================================
   5-b. 채널 입력 표 (스트링 상대비교 전용)
   ========================================================================== */
.sdc-chan { width: 100%; border-collapse: collapse; }
.sdc-chan th {
  font-size: var(--fs-xs); color: var(--muted); text-align: left;
  font-weight: 700; padding: 0 8px 6px; letter-spacing: .03em;
}
.sdc-chan td { padding: 3px 4px; }
.sdc-chan .sdc-input { padding: 9px 11px; font-size: 1rem; }
.sdc-chan__no { width: 34px; text-align: center; color: var(--muted); font-size: var(--fs-sm); font-variant-numeric: tabular-nums; }
.sdc-chan__del {
  width: 32px; height: 32px; padding: 0; line-height: 1;
  background: none; border: 1px solid var(--line); border-radius: var(--r-sm);
  color: var(--muted); cursor: pointer; font-size: 15px;
}
.sdc-chan__del:hover { border-color: var(--bad); color: var(--bad); }
.sdc-chan tr.is-bad .sdc-input { border-color: var(--bad); background: var(--bad-bg); }

.sdc-paste {
  width: 100%; min-height: 96px; padding: 12px 14px; resize: vertical;
  font-family: var(--font-mono); font-size: var(--fs-sm); line-height: 1.7;
  color: var(--ink); border: 1px dashed var(--navy-100); border-radius: var(--r);
  background: var(--navy-050);
}
.sdc-paste:focus { border-style: solid; border-color: var(--navy-600); }

/* ---------- 채널별 막대 차트 ---------- */
.sdc-bars { display: grid; gap: 5px; margin: 4px 0 0; }
.sdc-bar { display: grid; grid-template-columns: 92px 1fr 84px; gap: 10px; align-items: center; font-size: var(--fs-sm); }
.sdc-bar__name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-weight: 600; }
.sdc-bar__track { position: relative; height: 22px; background: var(--line-soft); border-radius: 4px; overflow: hidden; }
.sdc-bar__fill { position: absolute; inset: 0 auto 0 0; border-radius: 4px; transition: width .5s var(--ease); }
.sdc-bar__fill--ok    { background: var(--ok); }
.sdc-bar__fill--watch { background: #CA8A04; }
.sdc-bar__fill--susp  { background: var(--warn); }
.sdc-bar__fill--bad   { background: var(--bad); }
.sdc-bar__ref { position: absolute; top: -3px; bottom: -3px; width: 2px; background: var(--navy); z-index: 2; }
.sdc-bar__val { text-align: right; font-variant-numeric: tabular-nums; font-weight: 700; }
.sdc-bar__legend { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 12px; font-size: var(--fs-xs); color: var(--muted); }
.sdc-bar__key { display: inline-flex; align-items: center; gap: 6px; }
.sdc-bar__dot { width: 11px; height: 11px; border-radius: 3px; flex: none; }
@media (max-width: 520px) {
  .sdc-bar { grid-template-columns: 68px 1fr 62px; gap: 7px; font-size: var(--fs-xs); }
}

/* ---------- 요약 숫자 타일 ---------- */
.sdc-tiles { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-bottom: 18px; }
.sdc-tile { padding: 14px 16px; border: 1px solid var(--line); border-radius: var(--r); background: #fff; }
.sdc-tile__k { font-size: var(--fs-xs); color: var(--muted); margin-bottom: 4px; }
.sdc-tile__v { font-size: 1.5rem; font-weight: 800; color: var(--navy); letter-spacing: -.02em; line-height: 1.2; }
.sdc-tile__v small { font-size: .55em; font-weight: 700; color: var(--muted); margin-left: 3px; }
@media (max-width: 560px) { .sdc-tiles { grid-template-columns: 1fr; } }

/* ==========================================================================
   6. 프로세스 · 원칙
   ========================================================================== */
.sdc-steps { list-style: none; margin: 0; padding: 0; counter-reset: s; display: grid; gap: 2px; }
.sdc-step {
  counter-increment: s; position: relative; padding: 20px 20px 20px 68px;
  background: #fff; border: 1px solid var(--line);
}
.sdc-step:first-child { border-radius: var(--r-lg) var(--r-lg) 0 0; }
.sdc-step:last-child  { border-radius: 0 0 var(--r-lg) var(--r-lg); }
.sdc-step::before {
  content: counter(s); position: absolute; left: 20px; top: 20px;
  width: 32px; height: 32px; display: grid; place-items: center;
  background: var(--navy); color: #fff; border-radius: 50%; font-size: var(--fs-sm); font-weight: 800;
}
.sdc-step h3 { margin-bottom: .3em; font-size: 1.0625rem; }
.sdc-step p { margin-bottom: 0; font-size: var(--fs-sm); color: var(--ink-soft); }

/* ==========================================================================
   7. 마무리 CTA
   ========================================================================== */
.sdc-cta { text-align: center; }
.sdc-cta__acts { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; margin-top: 24px; }
.sdc-section--deep .sdc-lead { color: #C3CCE2; }
.sdc-section--deep .sdc-eyebrow { color: var(--gold); }