/* =========================================================================
   PassCheck — 자격증 합격 판정 계산기
   Design read: 고사장 채점대(採點臺) · OMR 답안지 + 가로 '합격선(커트라인)'.
   One accent lock = 코발트. 과락 상태 전용 = amber-burnt(warn). green/red 합불 회피.
   VARIANCE 4 / MOTION 3 / DENSITY 6.
   폰트: 한글 IBM Plex Sans KR(공공/시험 신뢰), 숫자 IBM Plex Mono(채점 정밀),
        라틴 라벨 Space Grotesk. (Pretendard는 Google Fonts 미제공이라 대체)
   ========================================================================= */

:root {
  --paper: #F6F7F9;
  --paper-2: #FFFFFF;
  --ink: #16181D;
  --ink-60: #565A63;
  --ink-40: #8A8F98;
  --line: #E1E4E9;
  --line-strong: #C9CDD4;
  --cobalt: #1F4BE0;
  --cobalt-soft: #EAEEFC;
  --cobalt-line: #C4D0F7;
  --warn: #C2410C;
  --warn-soft: #FBEBE2;
  --warn-line: #EBC7B2;

  --radius-input: 8px;
  --radius-panel: 12px;
  --shadow-1: 0 1px 2px rgba(22, 24, 29, 0.04), 0 4px 16px rgba(31, 75, 224, 0.05);
  --shadow-2: 0 2px 6px rgba(22, 24, 29, 0.06), 0 12px 40px rgba(31, 75, 224, 0.08);

  --sans: "IBM Plex Sans KR", "Pretendard", "Apple SD Gothic Neo", system-ui, sans-serif;
  --mono: "IBM Plex Mono", "SFMono-Regular", ui-monospace, monospace;
  --display: "Space Grotesk", var(--sans);

  --wrap: 1120px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #101216;
    --paper-2: #171A20;
    --ink: #EDEFF3;
    --ink-60: #A6ACB6;
    --ink-40: #767C86;
    --line: #262A31;
    --line-strong: #333944;
    --cobalt: #6E90FF;
    --cobalt-soft: #1A2440;
    --cobalt-line: #2C3B63;
    --warn: #F08A50;
    --warn-soft: #331E12;
    --warn-line: #4E3320;
    --shadow-1: 0 1px 2px rgba(0, 0, 0, 0.4), 0 6px 20px rgba(0, 0, 0, 0.35);
    --shadow-2: 0 3px 10px rgba(0, 0, 0, 0.5), 0 16px 44px rgba(0, 0, 0, 0.45);
  }
}
:root[data-theme="dark"] {
  --paper: #101216; --paper-2: #171A20; --ink: #EDEFF3; --ink-60: #A6ACB6;
  --ink-40: #767C86; --line: #262A31; --line-strong: #333944; --cobalt: #6E90FF;
  --cobalt-soft: #1A2440; --cobalt-line: #2C3B63; --warn: #F08A50; --warn-soft: #331E12;
  --warn-line: #4E3320;
  --shadow-1: 0 1px 2px rgba(0,0,0,.4), 0 6px 20px rgba(0,0,0,.35);
  --shadow-2: 0 3px 10px rgba(0,0,0,.5), 0 16px 44px rgba(0,0,0,.45);
}
:root[data-theme="light"] {
  --paper: #F6F7F9; --paper-2: #FFFFFF; --ink: #16181D; --ink-60: #565A63;
  --ink-40: #8A8F98; --line: #E1E4E9; --line-strong: #C9CDD4; --cobalt: #1F4BE0;
  --cobalt-soft: #EAEEFC; --cobalt-line: #C4D0F7; --warn: #C2410C; --warn-soft: #FBEBE2;
  --warn-line: #EBC7B2;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--sans);
  background: var(--paper);
  color: var(--ink);
  line-height: 1.65;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
h1, h2, h3, h4 { line-height: 1.25; font-weight: 700; letter-spacing: -0.01em; }
a { color: var(--cobalt); text-decoration: none; }
a:hover { text-decoration: underline; }
p { margin: 0 0 1em; }
:focus-visible { outline: 2px solid var(--cobalt); outline-offset: 2px; border-radius: 4px; }

.mono { font-family: var(--mono); font-variant-numeric: tabular-nums; }
.tnum { font-variant-numeric: tabular-nums; }

/* ---------- 합격선(커트라인) 스트립 모티프 ---------- */
.cutline-strip {
  height: 6px;
  background-image: repeating-linear-gradient(90deg,
    var(--cobalt) 0, var(--cobalt) 14px, transparent 14px, transparent 26px);
  opacity: 0.85;
}

/* ---------- 상단 내비 ---------- */
.top-nav {
  position: sticky; top: 0; z-index: 40;
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; padding: 12px clamp(16px, 4vw, 40px);
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid var(--line);
}
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); font-weight: 700; }
.brand:hover { text-decoration: none; }
.brand .badge {
  width: 30px; height: 30px; border-radius: 50%; background: var(--cobalt);
  color: #fff; display: grid; place-items: center; font-weight: 700; font-size: 15px;
  box-shadow: 0 2px 8px rgba(31, 75, 224, 0.35);
}
.brand .model-tag {
  font-family: var(--display); font-size: 11px; letter-spacing: 0.08em;
  color: var(--ink-40); border: 1px solid var(--line); border-radius: 999px;
  padding: 2px 8px; margin-left: 2px;
}
.nav-links { display: flex; align-items: center; gap: 4px; flex-wrap: wrap; }
.nav-links a {
  color: var(--ink-60); font-size: 14px; font-weight: 500;
  padding: 7px 11px; border-radius: 8px;
}
.nav-links a:hover { color: var(--ink); background: var(--cobalt-soft); text-decoration: none; }
.nav-links a.cta { color: var(--cobalt); font-weight: 600; }

/* ---------- 레이아웃 ---------- */
.container { max-width: var(--wrap); margin: 0 auto; padding: 0 clamp(16px, 4vw, 40px); }
.section { padding: clamp(40px, 6vw, 72px) 0; }
.section-tight { padding: clamp(28px, 4vw, 44px) 0; }
.eyebrow {
  font-family: var(--display); font-size: 12px; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--cobalt); font-weight: 600; margin: 0 0 12px;
}
.lede { font-size: 1.06rem; color: var(--ink-60); max-width: 65ch; }
.prose { max-width: 68ch; }
.prose p, .prose li { color: var(--ink-60); }
.prose h2 { font-size: clamp(1.4rem, 3vw, 1.8rem); margin: 1.8em 0 0.5em; color: var(--ink); }
.prose h3 { font-size: 1.15rem; margin: 1.5em 0 0.4em; color: var(--ink); }
.prose strong, .prose b { color: var(--ink); }
.prose ul, .prose ol { padding-left: 1.25em; }
.prose li { margin: 0.35em 0; }

/* ---------- 히어로 스플릿 ---------- */
.hero { display: grid; grid-template-columns: 1fr; gap: clamp(28px, 4vw, 48px); align-items: start; padding: clamp(36px, 5vw, 60px) 0 clamp(20px, 3vw, 32px); }
@media (min-width: 940px) { .hero.split { grid-template-columns: minmax(0, 1fr) minmax(430px, 520px); } }
.hero h1 { font-size: clamp(1.9rem, 4.6vw, 3rem); margin: 0 0 16px; }
.hero .lede { font-size: clamp(1rem, 2vw, 1.14rem); }
.hero-points { list-style: none; padding: 0; margin: 20px 0 0; display: grid; gap: 10px; }
.hero-points li { display: flex; gap: 10px; align-items: flex-start; color: var(--ink-60); font-size: 0.98rem; }
.hero-points .k { color: var(--cobalt); font-weight: 700; font-family: var(--mono); flex: 0 0 auto; }

/* ---------- 패널 / 위젯 ---------- */
.panel {
  background: var(--paper-2); border: 1px solid var(--line);
  border-radius: var(--radius-panel); box-shadow: var(--shadow-2); overflow: hidden;
}
.panel-head {
  display: flex; align-items: center; gap: 10px;
  padding: 14px 18px; border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, color-mix(in srgb, var(--cobalt-soft) 55%, var(--paper-2)), var(--paper-2));
}
.panel-head h2 { font-size: 1rem; margin: 0; }
.panel-head .stud { width: 9px; height: 9px; border-radius: 50%; background: var(--cobalt); box-shadow: 0 0 0 3px var(--cobalt-soft); }
.panel-head .tag {
  margin-left: auto; font-family: var(--display); font-size: 10px; letter-spacing: 0.1em;
  color: var(--ink-40); border: 1px solid var(--line); border-radius: 999px; padding: 3px 9px;
}
.panel-body { padding: 18px; }

/* 필드 */
.field { margin: 0 0 14px; }
.field > label { display: block; font-size: 13px; font-weight: 600; color: var(--ink); margin: 0 0 6px; }
.field .hint { font-weight: 400; color: var(--ink-40); font-size: 12px; margin-left: 4px; }
.select, .num-input {
  width: 100%; font: inherit; color: var(--ink); background: var(--paper);
  border: 1px solid var(--line-strong); border-radius: var(--radius-input);
  padding: 10px 12px; appearance: none;
}
.select { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%23565A63' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 12px center; padding-right: 34px; }
.num-input.mono { font-family: var(--mono); }
.num-input:focus, .select:focus { border-color: var(--cobalt); outline: none; box-shadow: 0 0 0 3px var(--cobalt-soft); }

/* 탭 (차수/필기·실기) */
.tabs { display: flex; gap: 6px; flex-wrap: wrap; margin: 0 0 16px; }
.tab {
  font: inherit; font-size: 13px; font-weight: 600; cursor: pointer;
  color: var(--ink-60); background: var(--paper); border: 1px solid var(--line-strong);
  border-radius: 999px; padding: 7px 15px;
}
.tab:hover { border-color: var(--cobalt-line); color: var(--ink); }
.tab.active { background: var(--cobalt); border-color: var(--cobalt); color: #fff; box-shadow: 0 2px 8px rgba(31,75,224,.28); }

/* 점수/맞은개수 토글 (OMR 마킹 버블 감성) */
.mode-toggle { display: inline-flex; padding: 3px; gap: 3px; background: var(--paper); border: 1px solid var(--line-strong); border-radius: 999px; }
.mode-toggle button {
  font: inherit; font-size: 12.5px; font-weight: 600; cursor: pointer;
  border: 0; background: transparent; color: var(--ink-60); border-radius: 999px; padding: 6px 14px;
}
.mode-toggle button.active { background: var(--cobalt); color: #fff; }

/* 과목 입력 행 */
.subj-list { border-top: 1px solid var(--line); margin-top: 6px; }
.subj-row {
  display: grid; grid-template-columns: 1fr 128px; gap: 12px; align-items: center;
  padding: 12px 0; border-bottom: 1px solid var(--line); border-left: 3px solid transparent; padding-left: 12px;
  transition: border-color 0.15s, background 0.15s;
}
.subj-row .s-name { font-weight: 600; font-size: 0.95rem; }
.subj-row .s-sub { display: block; font-weight: 400; font-size: 12px; color: var(--ink-40); }
.subj-row .s-badge {
  display: none; margin-left: 8px; font-size: 11px; font-weight: 700; font-family: var(--mono);
  color: var(--warn); background: var(--warn-soft); border: 1px solid var(--warn-line);
  border-radius: 6px; padding: 1px 7px; vertical-align: middle;
}
.subj-row.gwarak { border-left-color: var(--warn); background: color-mix(in srgb, var(--warn-soft) 40%, transparent); }
.subj-row.gwarak .s-badge { display: inline-block; }
.subj-row .in-wrap { position: relative; }
.subj-row .in-wrap .suffix { position: absolute; right: 10px; top: 50%; transform: translateY(-50%); font-size: 12px; color: var(--ink-40); pointer-events: none; }
.subj-row .num-input { text-align: right; padding-right: 32px; }

/* ---------- 판정 결과 ---------- */
.verdict { margin-top: 18px; border-top: 2px solid var(--line); padding-top: 18px; }
.verdict.is-pending { opacity: 0.55; }
.stamp {
  display: inline-flex; align-items: center; gap: 10px; font-weight: 700; font-size: 1.15rem;
  padding: 12px 18px; border-radius: 10px; letter-spacing: -0.01em;
}
.stamp .dot { width: 12px; height: 12px; border-radius: 50%; flex: 0 0 auto; }
.stamp.pass { background: var(--cobalt); color: #fff; box-shadow: 0 4px 16px rgba(31,75,224,.3); }
.stamp.pass .dot { background: #fff; }
.stamp.fail { background: transparent; color: var(--ink); border: 1.5px solid var(--line-strong); }
.stamp.fail .dot { background: var(--ink-40); }
.stamp.warn { border-color: var(--warn-line); color: var(--warn); background: var(--warn-soft); }
.stamp.warn .dot { background: var(--warn); }
.stamp.pending { border: 1.5px dashed var(--line-strong); color: var(--ink-40); background: transparent; }
.stamp.pending .dot { background: var(--ink-40); }

.verdict-readout { display: flex; flex-wrap: wrap; gap: 10px 22px; margin: 16px 0 4px; font-family: var(--mono); }
.verdict-readout .kv { display: flex; flex-direction: column; gap: 2px; }
.verdict-readout .kv .k { font-family: var(--sans); font-size: 11px; color: var(--ink-40); letter-spacing: 0.02em; }
.verdict-readout .kv .v { font-size: 1.3rem; font-weight: 600; font-variant-numeric: tabular-nums; }
.verdict-readout .kv .v.warn { color: var(--warn); }
.verdict-readout .kv .v.pass { color: var(--cobalt); }

/* 합격선 게이지 바 (모션 3) */
.gauge-wrap { margin: 16px 0 4px; display: grid; gap: 10px; }
.gauge { display: grid; grid-template-columns: 96px 1fr 52px; gap: 10px; align-items: center; }
.gauge .g-name { font-size: 12.5px; color: var(--ink-60); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.gauge .g-track { position: relative; height: 12px; background: var(--paper); border: 1px solid var(--line); border-radius: 999px; overflow: hidden; }
.gauge .g-fill { position: absolute; left: 0; top: 0; bottom: 0; width: 0; background: var(--cobalt); border-radius: 999px; transition: width 0.6s cubic-bezier(.22,.61,.36,1); }
.gauge .g-fill.warn { background: var(--warn); }
.gauge .g-cut { position: absolute; top: -3px; bottom: -3px; width: 2px; background: var(--ink); border-radius: 2px; }
.gauge .g-cut::after { content: attr(data-label); position: absolute; top: -15px; left: 50%; transform: translateX(-50%); font-size: 9px; color: var(--ink-40); font-family: var(--mono); white-space: nowrap; }
.gauge .g-val { text-align: right; font-family: var(--mono); font-size: 12.5px; font-variant-numeric: tabular-nums; }
@media (prefers-reduced-motion: reduce) { .gauge .g-fill { transition: none; } }

.diagnosis { margin-top: 14px; background: var(--cobalt-soft); border: 1px solid var(--cobalt-line); border-radius: 10px; padding: 12px 14px; font-size: 0.92rem; color: var(--ink); }
.diagnosis.warn { background: var(--warn-soft); border-color: var(--warn-line); }
.diagnosis ul { margin: 6px 0 0; padding-left: 1.2em; }
.diagnosis li { margin: 3px 0; }
.diagnosis .mono { font-weight: 600; }

.verify-note { margin-top: 14px; font-size: 12px; color: var(--ink-40); border-top: 1px dashed var(--line); padding-top: 10px; }
.verify-note a { color: var(--ink-60); }

/* 쿠팡 버튼 */
.cp-links { margin-top: 14px; display: grid; gap: 8px; }
.cp-link {
  display: flex; align-items: center; justify-content: space-between; gap: 8px;
  padding: 12px 16px; border-radius: var(--radius-input); font-weight: 600; font-size: 0.94rem;
  background: var(--paper-2); color: var(--ink); border: 1px solid var(--line-strong);
}
.cp-link:hover { border-color: var(--cobalt); color: var(--cobalt); text-decoration: none; }
.cp-link::after { content: "→"; color: var(--ink-40); }
.cp-link:hover::after { color: var(--cobalt); }
.cp-link.sec { font-size: 0.88rem; font-weight: 500; }

/* ---------- 종목 그리드 ---------- */
.exam-grid { display: grid; grid-template-columns: 1fr; gap: 14px; margin-top: 8px; }
@media (min-width: 620px) { .exam-grid { grid-template-columns: 1fr 1fr; } }
@media (min-width: 960px) { .exam-grid { grid-template-columns: repeat(3, 1fr); } }
.exam-card {
  display: block; background: var(--paper-2); border: 1px solid var(--line);
  border-radius: var(--radius-panel); padding: 18px; box-shadow: var(--shadow-1); color: var(--ink);
  transition: transform 0.15s, box-shadow 0.15s, border-color 0.15s;
}
.exam-card:hover { text-decoration: none; transform: translateY(-2px); box-shadow: var(--shadow-2); border-color: var(--cobalt-line); }
.exam-card .tagline { font-family: var(--display); font-size: 11px; letter-spacing: 0.06em; color: var(--ink-40); text-transform: uppercase; }
.exam-card h3 { margin: 6px 0 6px; font-size: 1.12rem; }
.exam-card p { margin: 0; color: var(--ink-60); font-size: 0.9rem; }
.exam-card .pill { display: inline-block; margin-top: 12px; font-size: 11px; font-weight: 700; padding: 3px 9px; border-radius: 999px; }
.exam-card .pill.gwarak { color: var(--warn); background: var(--warn-soft); border: 1px solid var(--warn-line); }
.exam-card .pill.grade { color: var(--cobalt); background: var(--cobalt-soft); border: 1px solid var(--cobalt-line); }

/* ---------- 규칙 표 ---------- */
.table-scroll { overflow-x: auto; margin: 16px 0; border: 1px solid var(--line); border-radius: var(--radius-panel); }
table.rules { width: 100%; border-collapse: collapse; font-size: 0.9rem; min-width: 520px; }
table.rules th, table.rules td { text-align: left; padding: 11px 14px; border-bottom: 1px solid var(--line); }
table.rules th { background: var(--cobalt-soft); color: var(--ink); font-weight: 600; font-size: 0.85rem; }
table.rules td { color: var(--ink-60); }
table.rules td.num { font-family: var(--mono); font-variant-numeric: tabular-nums; text-align: right; color: var(--ink); }
table.rules tr:last-child td { border-bottom: 0; }

/* ---------- 콜아웃 / 고지 ---------- */
.callout { border-left: 3px solid var(--cobalt); background: var(--cobalt-soft); border-radius: 0 10px 10px 0; padding: 14px 16px; margin: 20px 0; color: var(--ink); }
.callout.warn { border-left-color: var(--warn); background: var(--warn-soft); }
.callout h3 { margin: 0 0 6px; font-size: 1rem; }
.callout p { margin: 0; color: var(--ink-60); font-size: 0.94rem; }
.notice-box { border: 1px solid var(--line); background: var(--paper-2); border-radius: var(--radius-panel); padding: 18px 20px; margin: 24px 0; box-shadow: var(--shadow-1); }
.notice-box h3 { margin: 0 0 8px; font-size: 1.02rem; }
.notice-box p, .notice-box li { color: var(--ink-60); font-size: 0.9rem; }
.notice-box .src { font-size: 12px; color: var(--ink-40); margin-top: 8px; word-break: break-all; }

/* ---------- FAQ ---------- */
.faq-item { border-bottom: 1px solid var(--line); padding: 20px 0; }
.faq-item h3 { font-size: 1.1rem; margin: 0 0 8px; display: flex; gap: 10px; }
.faq-item h3 .q { color: var(--cobalt); font-family: var(--mono); font-weight: 700; flex: 0 0 auto; }
.faq-item p { margin: 0 0 0.6em; color: var(--ink-60); }
.faq-item p:last-child { margin-bottom: 0; }

/* ---------- 예시 계산 카드 ---------- */
.example-grid { display: grid; gap: 14px; grid-template-columns: 1fr; margin: 18px 0; }
@media (min-width: 720px) { .example-grid { grid-template-columns: repeat(3, 1fr); } }
.example { background: var(--paper-2); border: 1px solid var(--line); border-radius: var(--radius-panel); padding: 16px; box-shadow: var(--shadow-1); }
.example h4 { margin: 0 0 10px; font-size: 0.95rem; }
.example .row { display: flex; justify-content: space-between; font-family: var(--mono); font-size: 13px; padding: 3px 0; border-bottom: 1px dashed var(--line); }
.example .row:last-of-type { border-bottom: 0; }
.example .row .v { font-variant-numeric: tabular-nums; }
.example .row .v.bad { color: var(--warn); font-weight: 600; }
.example .res { margin-top: 10px; font-size: 0.9rem; font-weight: 600; }
.example .res.pass { color: var(--cobalt); }
.example .res.fail { color: var(--warn); }

/* ---------- 푸터 ---------- */
footer { border-top: 1px solid var(--line); margin-top: 40px; background: var(--paper-2); }
.footer-grid { display: grid; grid-template-columns: 1fr; gap: 24px; padding: 40px 0 20px; }
@media (min-width: 720px) { .footer-grid { grid-template-columns: repeat(4, 1fr); } }
.footer-col h4 { font-size: 12px; letter-spacing: 0.06em; text-transform: uppercase; color: var(--ink-40); margin: 0 0 12px; font-family: var(--display); }
.footer-col a { display: block; color: var(--ink-60); font-size: 0.9rem; padding: 4px 0; }
.footer-col a:hover { color: var(--cobalt); text-decoration: none; }
.footer-bottom { border-top: 1px solid var(--line); padding: 18px 0 40px; display: flex; flex-wrap: wrap; gap: 6px 18px; justify-content: space-between; }
.footer-bottom p { margin: 0; font-size: 12px; color: var(--ink-40); }
.footer-plate { font-family: var(--display); letter-spacing: 0.06em; }

.hr { border: 0; border-top: 1px solid var(--line); margin: 32px 0; }
.center { text-align: center; }
.mt-0 { margin-top: 0; }
.small { font-size: 0.85rem; color: var(--ink-40); }
.badge-inline { display: inline-block; font-size: 11px; font-weight: 700; padding: 2px 8px; border-radius: 999px; background: var(--cobalt-soft); color: var(--cobalt); border: 1px solid var(--cobalt-line); }