/* ==========================================================================
   TOP EDU PREP — Design System
   Editorial dark academy aesthetic, inspired by museum/collector visual language
   ========================================================================== */

:root{
  /* Theme 1 — Editorial Dark (default) */
  --navy-deep:   #0B0F1A;
  --navy-mid:    #131A2B;
  --navy-line:   #2A3450;
  --gold:        #C9A227;
  --gold-soft:   #E4C766;
  --cream:       #F4EFE3;
  --cream-dim:   #DAD2BE;
  --ink:         #14161C;
  --paper:       #FBF9F4;
  --muted:       #9AA3BC;

  --font-display: "Playfair Display", "Noto Serif KR", serif;
  --font-body:    "Source Serif 4", "Noto Serif KR", serif;
  --font-mono:    "JetBrains Mono", "Noto Sans KR", monospace;

  --radius: 2px;
  --container: 1180px;
}

/* ---- Theme presets (admin-selectable) ---- */
[data-theme="minimal-cream"]{
  --navy-deep:#FBF9F4; --navy-mid:#F4EFE3; --navy-line:#DAD2BE;
  --gold:#9C7A1E; --gold-soft:#C9A227; --cream:#14161C; --cream-dim:#3A3F52;
  --ink:#14161C; --paper:#FBF9F4; --muted:#5B5F6E;
}
[data-theme="magazine-grid"]{
  --navy-deep:#0F0F0F; --navy-mid:#171717; --navy-line:#3A3A3A;
  --gold:#B5834A; --gold-soft:#D9A96A; --cream:#EFEFEA; --cream-dim:#B8B8B0;
  --ink:#101010; --paper:#F6F6F2; --muted:#8A8A82;
  --font-display:"Playfair Display","Noto Serif KR",serif;
}
[data-theme="modern-glass"]{
  --navy-deep:#0A0E1C; --navy-mid:#111631; --navy-line:#2E3A66;
  --gold:#7FE0D0; --gold-soft:#A9F0E4; --cream:#EAF1FB; --cream-dim:#B9C6E6;
  --ink:#0A0E1C; --paper:#F5F8FF; --muted:#8C9BC7;
}
[data-theme="warm-academic"]{
  --navy-deep:#20160B; --navy-mid:#2C1F10; --navy-line:#5B4324;
  --gold:#D9A441; --gold-soft:#F0C878; --cream:#FBF3E3; --cream-dim:#E3D2AC;
  --ink:#1E1710; --paper:#FBF3E3; --muted:#8A7859;
}

*{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0; background:var(--paper); color:var(--ink);
  font-family:var(--font-body); font-size:17px; line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
h1,h2,h3,h4{ font-family:var(--font-display); font-weight:600; margin:0 0 .5em; line-height:1.2; }
p{ margin:0 0 1em; }
.container{ max-width:var(--container); margin:0 auto; padding:0 32px; }
.rule{ height:1px; background:var(--navy-line); border:0; }

/* ---- Nav ---- */
.site-nav{
  position:absolute; top:0; left:0; right:0; z-index:40;
  display:flex; align-items:center; justify-content:space-between;
  padding:26px 40px; color:var(--cream);
}
.site-nav.solid{ position:relative; background:var(--navy-deep); color:var(--cream); }
.brand{ font-family:var(--font-display); font-size:20px; letter-spacing:.08em; }
.brand .dot{ color:var(--gold); }
.nav-links{ display:flex; gap:34px; font-family:var(--font-mono); font-size:12px; letter-spacing:.06em; }
.nav-links a{ opacity:.86; transition:opacity .2s; }
.nav-links a:hover, .nav-links a.active{ opacity:1; color:var(--gold-soft); }
.nav-cta{ font-family:var(--font-mono); font-size:12px; border:1px solid currentColor; padding:9px 18px; opacity:.9; }
.nav-toggle{ display:none; }

/* ---- Hero ---- */
.hero{
  position:relative; min-height:640px; display:flex; flex-direction:column;
  justify-content:flex-end; overflow:hidden; background:var(--navy-deep);
  background-size:cover; background-position:center;
}
.hero::before{
  content:""; position:absolute; inset:0;
  background:linear-gradient(180deg, rgba(11,15,26,.35) 0%, rgba(11,15,26,.55) 55%, var(--navy-deep) 100%);
}
.hero-word{
  position:relative; z-index:2; color:var(--cream);
  font-family:var(--font-display); font-weight:500;
  font-size:clamp(52px, 10vw, 158px); letter-spacing:.02em;
  padding:0 34px; white-space:nowrap; overflow:hidden;
  margin-bottom:-6px;
}
.hero-tagline{
  position:relative; z-index:2; padding:18px 40px 30px; color:var(--cream-dim);
  font-family:var(--font-mono); font-size:12px; letter-spacing:.08em; display:flex; justify-content:space-between;
}

/* ---- Statement section ---- */
.statement{
  background:var(--navy-deep); color:var(--cream); padding:80px 40px 60px; text-align:center;
}
.statement h2{ font-size:clamp(24px,3.4vw,38px); font-weight:500; max-width:820px; margin:0 auto .3em; }
.statement .sub{
  max-width:640px; margin:24px auto 0; color:var(--muted); font-size:15px; line-height:1.9;
}

/* ---- Pillars (3-col ledger, like reference categories row) ---- */
.pillars{ background:var(--navy-deep); padding:50px 40px 90px; }
.pillars-grid{
  max-width:var(--container); margin:0 auto; display:grid;
  grid-template-columns:repeat(3,1fr); border-top:1px solid var(--navy-line);
}
.pillar{ padding:34px 28px 0; border-left:1px solid var(--navy-line); }
.pillar:first-child{ border-left:none; padding-left:0; }
.pillar .marker{ color:var(--gold); font-size:22px; line-height:1; margin-bottom:14px; }
.pillar h3{ color:var(--cream); font-size:16px; letter-spacing:.06em; text-transform:uppercase; font-family:var(--font-mono); font-weight:500; }
.pillar p{ color:var(--muted); font-size:14.5px; }

/* ---- Section (light) ---- */
.section{ padding:90px 40px; }
.section-head{ max-width:680px; margin:0 auto 50px; text-align:center; }
.section-head h2{ font-size:clamp(26px,3.2vw,40px); }
.section-head p{ color:#5b5f6e; }
.eyebrow{ font-family:var(--font-mono); font-size:12px; letter-spacing:.1em; color:var(--gold); margin-bottom:14px; display:block; }

/* ---- Cards ---- */
.grid-3{ display:grid; grid-template-columns:repeat(3,1fr); gap:0; max-width:var(--container); margin:0 auto; border-top:1px solid #E3DCC9; }
.card{ padding:38px 30px; border-left:1px solid #E3DCC9; }
.card:first-child{ border-left:none; }
.card .idx{ font-family:var(--font-mono); font-size:12px; color:var(--gold); margin-bottom:10px; display:block; }
.card h3{ font-size:20px; margin-bottom:10px; }
.card p{ color:#5b5f6e; font-size:15px; }

/* ---- Campus list ---- */
.campus-list{ max-width:var(--container); margin:0 auto; }
.campus-row{
  display:grid; grid-template-columns:1.2fr 2fr 1fr; gap:20px; align-items:baseline;
  padding:26px 0; border-bottom:1px solid #E3DCC9;
}
.campus-row h4{ font-size:19px; margin:0; }
.campus-row .meta{ color:#5b5f6e; font-size:14.5px; }
.campus-row .tag{ font-family:var(--font-mono); font-size:12px; color:var(--gold); text-align:right; }

/* ---- CTA band ---- */
.cta-band{ background:var(--navy-mid); color:var(--cream); text-align:center; padding:70px 40px; }
.cta-band h2{ font-size:clamp(22px,3vw,32px); margin-bottom:20px; }
.btn{
  display:inline-block; font-family:var(--font-mono); font-size:13px; letter-spacing:.05em;
  padding:14px 30px; border:1px solid var(--gold); color:var(--gold-soft); transition:all .2s;
}
.btn:hover{ background:var(--gold); color:var(--navy-deep); }
.btn.solid{ background:var(--gold); color:var(--navy-deep); }
.btn.solid:hover{ opacity:.85; }

/* ---- Footer ---- */
footer.site-footer{ background:var(--navy-deep); color:var(--muted); padding:60px 40px 30px; font-size:14px; }
.footer-grid{ max-width:var(--container); margin:0 auto; display:grid; grid-template-columns:1.4fr 1fr 1fr 1fr; gap:40px; padding-bottom:40px; }
.footer-grid h5{ font-family:var(--font-mono); font-size:12px; letter-spacing:.08em; color:var(--cream); margin:0 0 16px; text-transform:uppercase; }
.footer-grid a{ display:block; color:var(--muted); margin-bottom:9px; }
.footer-grid a:hover{ color:var(--gold-soft); }
.footer-brand{ font-family:var(--font-display); color:var(--cream); font-size:22px; margin-bottom:14px; }
.footer-bottom{ max-width:var(--container); margin:0 auto; border-top:1px solid var(--navy-line); padding-top:22px; font-size:12px; display:flex; justify-content:space-between; font-family:var(--font-mono); }

/* ---- Article / info pages ---- */
.article-hero{ background:var(--navy-deep); color:var(--cream); padding:180px 40px 70px; }
.article-hero .eyebrow{ color:var(--gold-soft); }
.article-hero h1{ font-size:clamp(30px,4.4vw,54px); max-width:820px; }
.article-meta{ font-family:var(--font-mono); font-size:12px; color:var(--muted); margin-top:20px; }
.article-body{ max-width:760px; margin:0 auto; padding:70px 40px 100px; }
.article-body h2{ font-size:26px; margin-top:2em; }
.article-body h3{ font-size:20px; margin-top:1.6em; }
.article-body p{ color:#2c2f38; }
.article-body ul, .article-body ol{ color:#2c2f38; padding-left:1.2em; }
.article-body li{ margin-bottom:.5em; }
.toc{ background:#F4EFE3; border-left:3px solid var(--gold); padding:20px 26px; margin:0 0 2em; font-size:14.5px; }
.toc h4{ font-family:var(--font-mono); font-size:12px; letter-spacing:.06em; margin-bottom:10px; }
.toc ol{ margin:0; padding-left:1.1em; }
.callout{ background:var(--navy-mid); color:var(--cream); padding:26px 28px; margin:2em 0; font-size:15px; }
.callout strong{ color:var(--gold-soft); }
table.infotable{ width:100%; border-collapse:collapse; margin:1.6em 0; font-size:14.5px; }
table.infotable th, table.infotable td{ border:1px solid #E3DCC9; padding:10px 12px; text-align:left; }
table.infotable th{ background:#F4EFE3; font-family:var(--font-mono); font-size:12px; letter-spacing:.03em; }

/* ---- Insights list ---- */
.insight-card{ display:grid; grid-template-columns:140px 1fr; gap:26px; padding:30px 0; border-bottom:1px solid #E3DCC9; }
.insight-card .date{ font-family:var(--font-mono); font-size:12px; color:var(--gold); }
.insight-card h3{ font-size:21px; margin-bottom:8px; }
.insight-card p{ color:#5b5f6e; font-size:15px; }

/* ---- Responsive ---- */
@media (max-width: 860px){
  .site-nav{ padding:20px 22px; }
  .nav-links{ display:none; }
  .grid-3, .pillars-grid{ grid-template-columns:1fr; }
  .pillar, .card{ border-left:none; border-top:1px solid var(--navy-line); padding-left:0; }
  .card{ border-top:1px solid #E3DCC9; }
  .footer-grid{ grid-template-columns:1fr 1fr; }
  .campus-row{ grid-template-columns:1fr; gap:6px; }
  .campus-row .tag{ text-align:left; }
  .section, .article-body, .article-hero{ padding-left:22px; padding-right:22px; }
}

/* ---- Print ---- */
@media print{
  .site-nav,.admin-bar,.admin-fab{ display:none !important; }
}