/* =========================================================
   입시나침반 (Ipsi Compass) — 대학입시 정보 사이트
   공통 스타일시트
   ========================================================= */

:root {
  --primary: #2b4eff;
  --primary-dark: #1a34c4;
  --primary-light: #eef1ff;
  --accent: #ff6b4a;
  --accent-dark: #e2503a;
  --ink: #1a1c29;
  --ink-soft: #4a4e63;
  --muted: #8a8fa3;
  --line: #e7e9f2;
  --bg: #f7f8fc;
  --card: #ffffff;
  --ok: #17b26a;
  --warn: #f79009;
  --danger: #e5484d;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow-sm: 0 1px 3px rgba(26, 28, 41, .06), 0 1px 2px rgba(26, 28, 41, .04);
  --shadow: 0 8px 24px rgba(26, 28, 41, .08);
  --shadow-lg: 0 20px 50px rgba(26, 28, 41, .14);
  --max: 1120px;
  --font: "Pretendard", -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo",
    "Malgun Gothic", "Noto Sans KR", system-ui, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: inherit; text-decoration: none; }

img { max-width: 100%; display: block; }

.container {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 20px;
}

/* ---------- Header / Nav ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, .85);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 66px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.18rem;
  letter-spacing: -.02em;
}
.brand .logo {
  width: 34px; height: 34px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), #6a83ff);
  display: grid; place-items: center;
  color: #fff; font-size: 1.1rem;
  box-shadow: var(--shadow-sm);
}
.brand small { color: var(--muted); font-weight: 600; font-size: .72rem; letter-spacing: 0; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 2px;
  list-style: none;
  margin: 0; padding: 0;
}
.nav-links a {
  display: block;
  padding: 8px 11px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: .9rem;
  color: var(--ink-soft);
  white-space: nowrap;
  transition: background .15s, color .15s;
}
.nav-links a:hover { background: var(--primary-light); color: var(--primary); }
.nav-links a.active { color: var(--primary); background: var(--primary-light); }

.nav-toggle {
  display: none;
  border: 1px solid var(--line);
  background: #fff;
  width: 42px; height: 42px;
  border-radius: 10px;
  font-size: 1.2rem;
  cursor: pointer;
}

@media (max-width: 980px) {
  .nav-toggle { display: block; }
  .nav-links {
    position: absolute;
    top: 66px; left: 0; right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: #fff;
    border-bottom: 1px solid var(--line);
    padding: 8px;
    box-shadow: var(--shadow);
    display: none;
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 13px 14px; }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 999px;
  font-weight: 700;
  font-size: .95rem;
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform .12s, box-shadow .15s, background .15s;
  white-space: nowrap;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--primary); color: #fff; box-shadow: var(--shadow-sm); }
.btn-primary:hover { background: var(--primary-dark); box-shadow: var(--shadow); }
.btn-ghost { background: #fff; color: var(--ink); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--primary); color: var(--primary); }
.btn-accent { background: var(--accent); color: #fff; }
.btn-accent:hover { background: var(--accent-dark); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(1200px 500px at 85% -10%, rgba(106, 131, 255, .25), transparent 60%),
    radial-gradient(900px 400px at 0% 120%, rgba(255, 107, 74, .12), transparent 55%),
    linear-gradient(180deg, #fff, var(--bg));
  border-bottom: 1px solid var(--line);
}
.hero-inner {
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 40px;
  align-items: center;
  padding: 74px 0 66px;
}
.hero h1 {
  font-size: clamp(2rem, 4.4vw, 3.1rem);
  line-height: 1.18;
  letter-spacing: -.03em;
  margin: 14px 0 16px;
}
.hero h1 .grad {
  background: linear-gradient(120deg, var(--primary), #7d63ff 55%, var(--accent));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero p.lead {
  font-size: 1.1rem;
  color: var(--ink-soft);
  max-width: 34em;
  margin: 0 0 26px;
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-weight: 700;
  font-size: .82rem;
  color: var(--primary);
  background: var(--primary-light);
  padding: 6px 13px;
  border-radius: 999px;
}
.hero-cta { display: flex; gap: 12px; flex-wrap: wrap; }

@media (max-width: 860px) {
  .hero-inner { grid-template-columns: 1fr; padding: 44px 0 40px; gap: 28px; }
}

/* ---------- D-day card ---------- */
.dday-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 26px;
}
.dday-card h3 { margin: 0 0 4px; font-size: 1rem; color: var(--ink-soft); }
.dday-num {
  font-size: 3.6rem;
  font-weight: 900;
  letter-spacing: -.03em;
  line-height: 1;
  color: var(--primary);
  margin: 8px 0;
  font-variant-numeric: tabular-nums;
}
.dday-num span { font-size: 1.4rem; color: var(--muted); font-weight: 700; }
.dday-date { color: var(--muted); font-size: .9rem; }
.dday-list { list-style: none; margin: 20px 0 0; padding: 18px 0 0; border-top: 1px dashed var(--line); }
.dday-list li { display: flex; justify-content: space-between; align-items: center; padding: 7px 0; font-size: .92rem; }
.dday-list .tag { font-weight: 700; color: var(--accent); font-variant-numeric: tabular-nums; }

/* ---------- Sections ---------- */
.section { padding: 66px 0; }
.section-head { text-align: center; max-width: 640px; margin: 0 auto 42px; }
.section-head h2 {
  font-size: clamp(1.6rem, 3.2vw, 2.2rem);
  letter-spacing: -.03em;
  margin: 8px 0 10px;
}
.section-head p { color: var(--ink-soft); margin: 0; font-size: 1.02rem; }
.kicker { color: var(--primary); font-weight: 800; font-size: .85rem; letter-spacing: .04em; text-transform: uppercase; }

/* ---------- Feature grid ---------- */
.grid { display: grid; gap: 20px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
@media (max-width: 900px) { .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 620px) { .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; } }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px;
  box-shadow: var(--shadow-sm);
  transition: transform .16s, box-shadow .16s, border-color .16s;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: #d3d8f5; }

.feature-card .ic {
  width: 52px; height: 52px;
  border-radius: 14px;
  display: grid; place-items: center;
  font-size: 1.5rem;
  margin-bottom: 16px;
  background: var(--primary-light);
}
.feature-card h3 { margin: 0 0 8px; font-size: 1.15rem; letter-spacing: -.02em; }
.feature-card p { margin: 0 0 14px; color: var(--ink-soft); font-size: .95rem; }
.feature-card .more { font-weight: 700; color: var(--primary); font-size: .9rem; }

/* ---------- Page hero (subpages) ---------- */
.page-hero {
  background:
    radial-gradient(800px 300px at 90% -20%, rgba(106, 131, 255, .22), transparent 60%),
    linear-gradient(180deg, #fff, var(--bg));
  border-bottom: 1px solid var(--line);
  padding: 52px 0 40px;
}
.page-hero h1 { font-size: clamp(1.8rem, 3.6vw, 2.6rem); letter-spacing: -.03em; margin: 10px 0 10px; }
.page-hero p { color: var(--ink-soft); max-width: 46em; margin: 0; font-size: 1.05rem; }
.breadcrumb { font-size: .85rem; color: var(--muted); }
.breadcrumb a:hover { color: var(--primary); }

/* ---------- Chips / filters ---------- */
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink-soft);
  padding: 8px 15px;
  border-radius: 999px;
  font-weight: 600;
  font-size: .88rem;
  cursor: pointer;
  transition: all .15s;
}
.chip:hover { border-color: var(--primary); color: var(--primary); }
.chip.active { background: var(--primary); color: #fff; border-color: var(--primary); }

/* ---------- Search ---------- */
.search-box {
  display: flex;
  align-items: center;
  gap: 10px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 6px 6px 6px 18px;
  box-shadow: var(--shadow-sm);
  max-width: 460px;
}
.search-box input { flex: 1; border: 0; outline: 0; font-size: 1rem; font-family: inherit; background: transparent; }
.search-box .btn { padding: 10px 20px; }

/* ---------- Table ---------- */
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; }
table.data { width: 100%; border-collapse: collapse; font-size: .93rem; min-width: 560px; }
table.data th, table.data td { padding: 13px 16px; text-align: left; border-bottom: 1px solid var(--line); }
table.data thead th { background: #fbfbfe; font-weight: 700; color: var(--ink-soft); position: sticky; top: 0; }
table.data tbody tr:hover { background: var(--primary-light); }
table.data td.num { font-variant-numeric: tabular-nums; text-align: right; }

/* ---------- Badges ---------- */
.badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: .76rem;
  font-weight: 700;
}
.badge-blue { background: var(--primary-light); color: var(--primary); }
.badge-red { background: #ffe9e6; color: var(--accent-dark); }
.badge-green { background: #e3f8ee; color: var(--ok); }
.badge-amber { background: #fff2dd; color: var(--warn); }
.badge-gray { background: #eef0f6; color: var(--ink-soft); }

/* ---------- University cards ---------- */
.uni-card { display: flex; flex-direction: column; gap: 10px; }
.uni-card .row { display: flex; align-items: center; justify-content: space-between; }
.uni-card h3 { margin: 0; font-size: 1.12rem; }
.uni-card .region { color: var(--muted); font-size: .86rem; }
.uni-card .tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 4px; }
.uni-card .links { display: flex; gap: 8px; margin-top: 8px; }
.uni-card .links a { font-size: .86rem; font-weight: 700; color: var(--primary); }

/* ---------- Accordion ---------- */
.accordion { border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: #fff; }
.acc-item + .acc-item { border-top: 1px solid var(--line); }
.acc-head {
  width: 100%; text-align: left;
  background: #fff; border: 0; cursor: pointer;
  padding: 18px 20px;
  font-size: 1.02rem; font-weight: 700;
  display: flex; justify-content: space-between; align-items: center; gap: 12px;
  font-family: inherit; color: var(--ink);
}
.acc-head:hover { background: #fbfbfe; }
.acc-head .plus { color: var(--primary); font-size: 1.3rem; transition: transform .2s; flex-shrink: 0; }
.acc-item.open .acc-head .plus { transform: rotate(45deg); }
.acc-body { max-height: 0; overflow: hidden; transition: max-height .28s ease; }
.acc-body-inner { padding: 0 20px 20px; color: var(--ink-soft); }

/* ---------- Steps ---------- */
.steps { counter-reset: step; display: grid; gap: 16px; }
.step { display: flex; gap: 16px; align-items: flex-start; }
.step .no {
  counter-increment: step;
  flex-shrink: 0;
  width: 40px; height: 40px;
  border-radius: 12px;
  background: var(--primary); color: #fff;
  display: grid; place-items: center;
  font-weight: 800;
}
.step .no::before { content: counter(step); }
.step .no.plain::before { content: none; }
.step h4 { margin: 4px 0 4px; font-size: 1.05rem; }
.step p { margin: 0; color: var(--ink-soft); font-size: .95rem; }

/* ---------- Callout ---------- */
.callout {
  border-left: 4px solid var(--primary);
  background: var(--primary-light);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 16px 20px;
  color: var(--ink-soft);
  font-size: .95rem;
}
.callout.warn { border-color: var(--warn); background: #fff7ea; }
.callout strong { color: var(--ink); }

/* ---------- Checklist ---------- */
.checklist { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.checklist li {
  display: flex; align-items: flex-start; gap: 12px;
  background: #fff; border: 1px solid var(--line);
  border-radius: var(--radius-sm); padding: 14px 16px;
  cursor: pointer; transition: all .15s;
}
.checklist li:hover { border-color: var(--primary); }
.checklist li .box {
  width: 22px; height: 22px; flex-shrink: 0;
  border: 2px solid var(--line); border-radius: 7px;
  display: grid; place-items: center; margin-top: 1px;
  font-size: .8rem; color: #fff; transition: all .15s;
}
.checklist li.done .box { background: var(--ok); border-color: var(--ok); }
.checklist li.done .box::after { content: "✓"; }
.checklist li.done span { text-decoration: line-through; color: var(--muted); }

/* ---------- Stat row ---------- */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.stat { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; text-align: center; }
.stat .n { font-size: 2rem; font-weight: 900; color: var(--primary); letter-spacing: -.03em; font-variant-numeric: tabular-nums; }
.stat .l { color: var(--ink-soft); font-size: .9rem; margin-top: 2px; }
@media (max-width: 620px) { .stats { grid-template-columns: repeat(2, 1fr); } }

/* ---------- CTA band ---------- */
.cta-band {
  background: linear-gradient(120deg, var(--primary), #5a72ff);
  color: #fff;
  border-radius: var(--radius);
  padding: 44px;
  text-align: center;
  box-shadow: var(--shadow);
}
.cta-band h2 { margin: 0 0 8px; font-size: 1.8rem; letter-spacing: -.02em; }
.cta-band p { margin: 0 0 22px; opacity: .92; }
.cta-band .btn-ghost { background: rgba(255,255,255,.14); color: #fff; border-color: rgba(255,255,255,.35); }
.cta-band .btn-ghost:hover { background: rgba(255,255,255,.24); color:#fff; }
.cta-band .btn-accent { background:#fff; color: var(--primary); }
.cta-band .btn-accent:hover { background:#f0f2ff; }

/* ---------- Footer ---------- */
.site-footer { background: #10121c; color: #b8bccb; padding: 48px 0 30px; margin-top: 20px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 30px; }
.site-footer h4 { color: #fff; font-size: .95rem; margin: 0 0 14px; }
.site-footer ul { list-style: none; padding: 0; margin: 0; }
.site-footer li { margin: 8px 0; font-size: .9rem; }
.site-footer a:hover { color: #fff; }
.footer-brand { display: flex; align-items: center; gap: 10px; font-weight: 800; color: #fff; font-size: 1.1rem; margin-bottom: 12px; }
.footer-brand .logo { width: 32px; height: 32px; border-radius: 9px; background: linear-gradient(135deg, var(--primary), #6a83ff); display: grid; place-items: center; }
.footer-note { font-size: .84rem; line-height: 1.6; color: #7d8296; }
.footer-bottom { border-top: 1px solid #23263a; margin-top: 34px; padding-top: 20px; font-size: .82rem; color: #6a6f83; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; }
@media (max-width: 780px) { .footer-grid { grid-template-columns: 1fr 1fr; } }

/* ---------- Utilities ---------- */
.text-center { text-align: center; }
.mt-0 { margin-top: 0; } .mt-1 { margin-top: 12px; } .mt-2 { margin-top: 24px; } .mt-3 { margin-top: 36px; }
.mb-0 { margin-bottom: 0; }
.hidden { display: none !important; }
.pill-list { display: flex; flex-wrap: wrap; gap: 8px; list-style: none; padding: 0; margin: 0; }
.pill-list li { background: var(--primary-light); color: var(--primary); padding: 5px 12px; border-radius: 999px; font-size: .84rem; font-weight: 600; }

/* ---------- 공유 섹션 ---------- */
.share-box { text-align: center; background: linear-gradient(180deg, #fff, var(--primary-light)); border-color: #d3d8f5; }
.share-box h2 { margin: 0 0 6px; font-size: 1.5rem; letter-spacing: -.02em; }
.share-box p { color: var(--ink-soft); margin: 0 0 18px; }
.share-url {
  display: inline-block; background: #fff; border: 1px solid var(--line);
  border-radius: 999px; padding: 10px 22px; font-weight: 800; color: var(--primary);
  font-variant-numeric: tabular-nums; letter-spacing: .01em;
}
.share-btns { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; margin-top: 18px; }

.reveal { opacity: 0; transform: translateY(18px); transition: opacity .5s ease, transform .5s ease; }
.reveal.in { opacity: 1; transform: none; }

.no-result { text-align: center; color: var(--muted); padding: 40px 0; }

/* ---------- 아티클(칼럼) 본문 ---------- */
.prose { max-width: 760px; margin: 0 auto; }
.prose .lead { font-size: 1.14rem; color: var(--ink); margin: 0 0 20px; line-height: 1.8; }
.prose h2 { font-size: 1.35rem; letter-spacing: -.02em; margin: 36px 0 12px; }
.prose h3 { font-size: 1.1rem; margin: 26px 0 8px; }
.prose p { margin: 0 0 15px; color: var(--ink-soft); font-size: 1.02rem; line-height: 1.85; }
.prose ul, .prose ol { margin: 0 0 16px; padding-left: 22px; color: var(--ink-soft); line-height: 1.9; }
.prose li { margin: 5px 0; }
.prose strong { color: var(--ink); }
.prose blockquote { border-left: 4px solid var(--primary); background: var(--primary-light); margin: 20px 0; padding: 14px 20px; border-radius: 0 var(--radius-sm) var(--radius-sm) 0; color: var(--ink-soft); }
.article-meta { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; color: var(--muted); font-size: .9rem; margin-top: 10px; }

/* 칼럼 목록 카드 */
.col-card { display: flex; flex-direction: column; height: 100%; }
.col-card .cat { align-self: flex-start; }
.col-card h3 { margin: 10px 0 6px; font-size: 1.12rem; letter-spacing: -.02em; }
.col-card p { margin: 0 0 12px; color: var(--ink-soft); font-size: .94rem; flex: 1; }
.col-card .more { font-weight: 700; color: var(--primary); font-size: .9rem; }

/* 광고 슬롯 (애드센스 승인 후 노출) */
.ad-slot { max-width: 760px; margin: 26px auto; min-height: 90px; border: 1px dashed var(--line); border-radius: var(--radius-sm); display: grid; place-items: center; color: var(--muted); font-size: .82rem; background: #fbfbfe; }

/* ---------- Forms ---------- */
.field { display: flex; flex-direction: column; gap: 6px; margin-bottom: 16px; }
.field label { font-weight: 700; font-size: .9rem; color: var(--ink); }
.field .hint { font-size: .8rem; color: var(--muted); font-weight: 500; }
.input, .select, .textarea {
  font-family: inherit; font-size: 1rem;
  padding: 11px 14px;
  border: 1px solid var(--line); border-radius: var(--radius-sm);
  background: #fff; color: var(--ink); outline: none; width: 100%;
  transition: border-color .15s, box-shadow .15s;
}
.input:focus, .select:focus, .textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-light);
}
.textarea { min-height: 110px; resize: vertical; line-height: 1.6; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 620px) { .form-row { grid-template-columns: 1fr; } }

/* ---------- 합격진단 결과 ---------- */
.result-item {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 14px 18px; border: 1px solid var(--line);
  border-radius: var(--radius-sm); background: #fff; margin-bottom: 10px;
  border-left: 5px solid var(--line);
}
.result-item .meta { color: var(--muted); font-size: .84rem; }
.result-item.safe { border-left-color: var(--ok); }
.result-item.fit { border-left-color: var(--primary); }
.result-item.reach { border-left-color: var(--warn); }
.result-item.high { border-left-color: var(--danger); }
.gauge { height: 8px; border-radius: 999px; background: var(--line); overflow: hidden; margin-top: 6px; }
.gauge > i { display: block; height: 100%; background: linear-gradient(90deg, var(--primary), #6a83ff); }

/* ---------- 대학 비교표 ---------- */
.compare-picker { display: flex; flex-wrap: wrap; gap: 8px; }
.compare-table th:first-child { position: sticky; left: 0; background: #fbfbfe; z-index: 1; }

/* ---------- 커뮤니티 ---------- */
.post {
  background: #fff; border: 1px solid var(--line);
  border-radius: var(--radius-sm); padding: 16px 18px; margin-bottom: 12px;
  transition: box-shadow .15s;
}
.post:hover { box-shadow: var(--shadow-sm); }
.post .top { display: flex; align-items: center; gap: 8px; margin-bottom: 6px; }
.post h3 { margin: 4px 0 6px; font-size: 1.06rem; }
.post .body { color: var(--ink-soft); font-size: .94rem; white-space: pre-wrap; }
.post .foot { display: flex; justify-content: space-between; align-items: center; margin-top: 10px; font-size: .82rem; color: var(--muted); }
.post .del { border: 0; background: none; color: var(--muted); cursor: pointer; font-size: .82rem; }
.post .del:hover { color: var(--danger); }