/* ============================================================
   TOP EDU PREP — Design Tokens
   Concept: "성적 곡선(Score Curve)" — 어두운 딥스페이스 배경 위에
   유리질감 패널과 상승 곡선의 네온 그라디언트가 레이어링되는
   2026 트렌드(글래스모피즘 + 리퀴드 그리드 + 뉴트로 웹3 감성)
   ============================================================ */

:root {
  /* Color */
  --bg-void: #0a0c16;
  --bg-deep: #10132264;
  --panel: rgba(255, 255, 255, 0.06);
  --panel-border: rgba(255, 255, 255, 0.14);
  --panel-strong: rgba(255, 255, 255, 0.1);
  --ink: #eef0fb;
  --ink-dim: #a8adc7;
  --ink-faint: #6d7290;
  --accent-mint: #00e5a0;
  --accent-violet: #7b61ff;
  --accent-gold: #ffb84d;
  --accent-rose: #ff5d8f;
  --grad-score: linear-gradient(120deg, #00e5a0 0%, #7b61ff 60%, #ff5d8f 100%);
  --grad-gold: linear-gradient(120deg, #ffd166 0%, #ffb84d 100%);

  /* Type */
  --font-display: "Space Grotesk", "Pretendard", sans-serif;
  --font-body: "Pretendard", "Noto Sans KR", sans-serif;
  --font-mono: "JetBrains Mono", monospace;

  /* Layout */
  --radius-lg: 28px;
  --radius-md: 18px;
  --radius-sm: 10px;
  --container: min(1180px, 92vw);
  --nav-h: 76px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
}

body {
  margin: 0;
  background: var(--bg-void);
  color: var(--ink);
  font-family: var(--font-body);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* ---------- Ambient background texture ---------- */
.bg-scene {
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(circle at 12% 8%, rgba(0, 229, 160, 0.16), transparent 42%),
    radial-gradient(circle at 88% 18%, rgba(123, 97, 255, 0.22), transparent 45%),
    radial-gradient(circle at 50% 100%, rgba(255, 93, 143, 0.12), transparent 50%),
    var(--bg-void);
}
.bg-scene::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.035) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, black, transparent 75%);
}

/* ---------- Typography ---------- */
h1, h2, h3, h4 { font-family: var(--font-display); margin: 0; letter-spacing: -0.01em; color: var(--ink); }
h1 { font-size: clamp(2.2rem, 5vw + 1rem, 4.2rem); line-height: 1.06; font-weight: 700; }
h2 { font-size: clamp(1.7rem, 2.6vw + 1rem, 2.6rem); line-height: 1.15; font-weight: 700; }
h3 { font-size: clamp(1.2rem, 1.2vw + 1rem, 1.5rem); font-weight: 600; }
p { color: var(--ink-dim); margin: 0; }
a { color: inherit; text-decoration: none; }
.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent-mint);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.eyebrow::before { content: ""; width: 18px; height: 1px; background: var(--accent-mint); display: inline-block; }

/* ---------- Layout helpers ---------- */
.container { width: var(--container); margin-inline: auto; }
.section { padding: clamp(64px, 9vw, 120px) 0; position: relative; }
.grid-liquid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(280px, 100%), 1fr));
  gap: 22px;
}
@container (min-width: 800px) { .grid-liquid { gap: 28px; } }

/* ---------- Glass panel ---------- */
.glass {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  box-shadow: 0 8px 32px rgba(0,0,0,0.35), inset 0 1px 0 rgba(255,255,255,0.08);
}
.glass-card {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius-md);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  padding: 28px;
  transition: transform 0.35s cubic-bezier(.2,.8,.2,1), border-color 0.35s, box-shadow 0.35s;
}
.glass-card:hover {
  transform: translateY(-6px);
  border-color: rgba(0,229,160,0.4);
  box-shadow: 0 16px 40px rgba(0,229,160,0.08);
}

/* ---------- Nav ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  background: rgba(10, 12, 22, 0.55);
  backdrop-filter: blur(16px) saturate(140%);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.nav .container { display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: flex; align-items: center; gap: 10px; font-family: var(--font-display); font-weight: 700; font-size: 1.15rem; }
.brand .dot { width: 10px; height: 10px; border-radius: 50%; background: var(--grad-score); box-shadow: 0 0 14px rgba(0,229,160,0.7); }
.nav-links { display: flex; align-items: center; gap: 6px; }
.nav-links a {
  padding: 9px 16px;
  border-radius: 999px;
  font-size: 0.92rem;
  color: var(--ink-dim);
  transition: color 0.25s, background 0.25s;
}
.nav-links a:hover, .nav-links a.active { color: var(--ink); background: rgba(255,255,255,0.08); }
.nav-cta {
  padding: 10px 20px;
  border-radius: 999px;
  background: var(--grad-score);
  color: #0a0c16;
  font-weight: 700;
  font-size: 0.9rem;
  white-space: nowrap;
}
.nav-toggle { display: none; }

@media (max-width: 880px) {
  .nav-links { position: fixed; top: var(--nav-h); left: 0; right: 0; flex-direction: column; align-items: stretch; background: rgba(10,12,22,0.97); padding: 10px 5vw 20px; border-bottom: 1px solid rgba(255,255,255,0.1); transform: translateY(-8px); opacity: 0; pointer-events: none; transition: all 0.25s; }
  .nav-links.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
  .nav-links a { padding: 12px 6px; }
  .nav-toggle { display: block; background: none; border: 1px solid var(--panel-border); color: var(--ink); width: 40px; height: 40px; border-radius: 10px; font-size: 1.1rem; }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.95rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.25s cubic-bezier(.2,.8,.2,1), box-shadow 0.25s, background 0.25s;
}
.btn:active { transform: scale(0.97); }
.btn-primary { background: var(--grad-score); color: #0a0c16; }
.btn-primary:hover { box-shadow: 0 10px 30px rgba(0,229,160,0.28); transform: translateY(-2px); }
.btn-ghost { background: rgba(255,255,255,0.05); border-color: var(--panel-border); color: var(--ink); }
.btn-ghost:hover { background: rgba(255,255,255,0.1); transform: translateY(-2px); }
.btn-gold { background: var(--grad-gold); color: #241300; }
.btn-gold:hover { box-shadow: 0 10px 30px rgba(255,184,77,0.28); transform: translateY(-2px); }

/* ---------- Hero score-line signature ---------- */
.score-line-wrap { position: relative; width: 100%; height: auto; }
.score-line-wrap svg { width: 100%; height: auto; display: block; }
.score-path {
  fill: none;
  stroke: url(#scoreGrad);
  stroke-width: 3;
  stroke-linecap: round;
  stroke-dasharray: 1400;
  stroke-dashoffset: 1400;
  animation: draw 2.2s cubic-bezier(.2,.8,.2,1) forwards 0.3s;
}
@keyframes draw { to { stroke-dashoffset: 0; } }
.score-dot { opacity: 0; animation: pop 0.5s ease forwards; }
@keyframes pop { from { opacity: 0; transform: scale(0.4); } to { opacity: 1; transform: scale(1); } }

/* ---------- Stats row ---------- */
.stat { text-align: left; }
.stat .num { font-family: var(--font-mono); font-size: clamp(1.8rem, 2.6vw, 2.6rem); font-weight: 700; background: var(--grad-score); -webkit-background-clip: text; background-clip: text; color: transparent; }
.stat .label { color: var(--ink-faint); font-size: 0.85rem; margin-top: 4px; }

/* ---------- Badge / pill ---------- */
.pill { display: inline-block; padding: 5px 13px; border-radius: 999px; background: rgba(255,255,255,0.07); border: 1px solid var(--panel-border); font-size: 0.78rem; color: var(--ink-dim); font-family: var(--font-mono); }

/* ---------- Reveal on scroll ---------- */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity 0.7s cubic-bezier(.2,.8,.2,1), transform 0.7s cubic-bezier(.2,.8,.2,1); }
.reveal.in { opacity: 1; transform: translateY(0); }

/* ---------- Divider ---------- */
.divider { height: 1px; background: linear-gradient(90deg, transparent, var(--panel-border), transparent); border: none; margin: 0; }

/* ---------- Table (커리큘럼/시험일정) ---------- */
.table-wrap { overflow-x: auto; border-radius: var(--radius-md); border: 1px solid var(--panel-border); }
table { width: 100%; border-collapse: collapse; min-width: 560px; }
th, td { padding: 14px 18px; text-align: left; font-size: 0.92rem; border-bottom: 1px solid rgba(255,255,255,0.07); }
th { font-family: var(--font-mono); text-transform: uppercase; letter-spacing: 0.06em; font-size: 0.75rem; color: var(--accent-mint); background: rgba(255,255,255,0.04); }
td { color: var(--ink-dim); }
tr:last-child td { border-bottom: none; }
tr:hover td { color: var(--ink); background: rgba(255,255,255,0.02); }

/* ---------- Branch card map link ---------- */
.branch-tag { display: inline-flex; align-items: center; gap: 6px; font-family: var(--font-mono); font-size: 0.78rem; color: var(--accent-gold); }

/* ---------- Blog ---------- */
.blog-card .meta { display: flex; gap: 10px; align-items: center; margin-bottom: 12px; }
.blog-card .meta .date { font-family: var(--font-mono); font-size: 0.78rem; color: var(--ink-faint); }
.blog-card h3 { margin-bottom: 10px; }
.blog-card p { font-size: 0.92rem; }
.blog-card .read-more { display: inline-block; margin-top: 16px; font-size: 0.85rem; color: var(--accent-mint); font-weight: 600; }

article.post { max-width: 760px; margin-inline: auto; }
article.post h2 { margin-top: 2.4em; margin-bottom: 0.6em; }
article.post h3 { margin-top: 1.8em; margin-bottom: 0.5em; color: var(--accent-mint); }
article.post p { margin: 1em 0; color: var(--ink-dim); font-size: 1.02rem; }
article.post ul, article.post ol { color: var(--ink-dim); padding-left: 1.3em; }
article.post li { margin: 0.4em 0; }
article.post .lead { font-size: 1.15rem; color: var(--ink); }
article.post strong { color: var(--ink); }

/* ---------- CTA band ---------- */
.cta-band {
  position: relative;
  border-radius: var(--radius-lg);
  padding: clamp(40px, 6vw, 72px);
  overflow: hidden;
  text-align: center;
  border: 1px solid var(--panel-border);
}
.cta-band::before {
  content: "";
  position: absolute; inset: -2px;
  background: var(--grad-score);
  opacity: 0.14;
  filter: blur(40px);
  z-index: -1;
}

/* ---------- Footer ---------- */
footer { border-top: 1px solid rgba(255,255,255,0.08); padding: 56px 0 32px; margin-top: 60px; }
footer .foot-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 32px; }
footer h4 { font-size: 0.95rem; margin-bottom: 14px; color: var(--ink); }
footer a { color: var(--ink-faint); font-size: 0.88rem; display: block; padding: 5px 0; transition: color 0.2s; }
footer a:hover { color: var(--accent-mint); }
footer .copy { margin-top: 40px; padding-top: 24px; border-top: 1px solid rgba(255,255,255,0.06); color: var(--ink-faint); font-size: 0.82rem; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px; }
@media (max-width: 720px) { footer .foot-grid { grid-template-columns: 1fr 1fr; } }

/* ---------- Floating consult buttons ---------- */
.float-consult { position: fixed; right: 20px; bottom: 20px; z-index: 200; display: flex; flex-direction: column; gap: 10px; }
.float-consult a { width: 52px; height: 52px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 1.3rem; box-shadow: 0 8px 24px rgba(0,0,0,0.4); border: 1px solid var(--panel-border); }
.float-consult .naver { background: #03c75a; color: #fff; }
.float-consult .kakao { background: #fee500; color: #391b1b; }
.float-consult .tel { background: var(--grad-score); color: #0a0c16; }

/* ---------- Breadcrumb ---------- */
.crumb { font-family: var(--font-mono); font-size: 0.78rem; color: var(--ink-faint); }
.crumb a:hover { color: var(--accent-mint); }

/* ---------- misc ---------- */
.mono { font-family: var(--font-mono); }
.center { text-align: center; }
.mt-8 { margin-top: 8px; } .mt-16 { margin-top: 16px; } .mt-24 { margin-top: 24px; } .mt-40 { margin-top: 40px; } .mt-56 { margin-top: 56px; }
.max-w-680 { max-width: 680px; }
.text-dim { color: var(--ink-dim); }