:root {
  --bg: #ffffff;
  --surface: #f7f8fa;
  --surface-2: #ffffff;
  --text: #1a1d24;
  --text-soft: #4a5160;
  --muted: #8a93a3;
  --border: #e7eaf0;
  --accent: #2b59ff;
  --accent-soft: #eef2ff;
  --radius: 14px;
  --maxw: 760px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e1014;
    --surface: #161a21;
    --surface-2: #1b2029;
    --text: #f0f2f6;
    --text-soft: #b8c0cf;
    --muted: #7c8595;
    --border: #262c37;
    --accent: #6e8bff;
    --accent-soft: #1a2236;
  }
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: "Pretendard", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  word-break: keep-all;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.page {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 72px 24px 96px;
}

strong { font-weight: 700; color: var(--text); }
.latin { font-weight: 500; color: var(--muted); font-size: 0.7em; letter-spacing: 0.02em; }
.muted { color: var(--muted); font-weight: 400; }

/* HERO */
.hero { margin-bottom: 64px; }
.eyebrow {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-soft);
  padding: 5px 12px;
  border-radius: 999px;
  margin-bottom: 18px;
}
.hero h1 {
  font-size: clamp(2.2rem, 7vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.15;
}
.tagline {
  margin-top: 16px;
  font-size: clamp(1.05rem, 3.5vw, 1.3rem);
  color: var(--text-soft);
  max-width: 36em;
}
.contact {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  margin-top: 26px;
  font-size: 0.95rem;
}
.contact li { position: relative; }
.contact li + li::before {
  content: "";
  position: absolute;
  left: -12px; top: 50%;
  width: 3px; height: 3px;
  border-radius: 50%;
  background: var(--muted);
  transform: translateY(-50%);
}

/* BLOCKS */
.block { margin-top: 56px; }
.block h2 {
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  padding-bottom: 14px;
  margin-bottom: 22px;
  border-bottom: 1px solid var(--border);
}
.block p { color: var(--text-soft); }
.block-lead { margin-bottom: 20px; color: var(--text-soft); }

/* AI CARDS */
.cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px 22px 24px;
}
.card.accent { border-left: 3px solid var(--accent); }
.card h3 { font-size: 1.05rem; margin-bottom: 10px; }
.card p { font-size: 0.95rem; }

/* PROJECTS */
.projects { display: grid; gap: 16px; }
.project {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}
.project-head {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 4px;
}
.project-head h3 { font-size: 1.2rem; font-weight: 700; }
.badge {
  font-size: 0.74rem;
  font-weight: 600;
  color: var(--accent);
  background: var(--accent-soft);
  padding: 4px 10px;
  border-radius: 999px;
  white-space: nowrap;
}
.badge.subtle { color: var(--muted); background: var(--surface); border: 1px solid var(--border); }
.role { font-size: 0.85rem; color: var(--muted); font-weight: 600; margin-bottom: 12px; }
.project p { font-size: 0.97rem; }
.stack {
  margin-top: 14px;
  font-size: 0.82rem;
  color: var(--muted);
  letter-spacing: 0.01em;
}

/* TIMELINE */
.timeline { list-style: none; display: grid; gap: 16px; }
.timeline li { display: flex; gap: 18px; align-items: baseline; }
.timeline .year {
  flex: 0 0 56px;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.02em;
}
.timeline div { color: var(--text-soft); font-size: 0.97rem; }

/* EDUCATION */
.edu { list-style: none; display: grid; gap: 14px; }
.edu li {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 16px;
}
.edu-main { font-size: 1.02rem; color: var(--text-soft); }
.edu-sub { font-size: 0.82rem; color: var(--muted); white-space: nowrap; }

/* SKILLS */
.tags { list-style: none; display: flex; flex-wrap: wrap; gap: 9px; }
.tags li {
  font-size: 0.88rem;
  color: var(--text-soft);
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 7px 13px;
  border-radius: 999px;
}

/* FOOTER */
.footer {
  margin-top: 72px;
  padding-top: 28px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}
.footer .built { font-size: 0.82rem; color: var(--muted); }

/* RESPONSIVE */
@media (max-width: 560px) {
  .page { padding: 48px 20px 72px; }
  .cards { grid-template-columns: 1fr; }
  .timeline li { flex-direction: column; gap: 2px; }
  .timeline .year { flex-basis: auto; }
  .edu li { flex-direction: column; gap: 2px; }
  .edu-sub { white-space: normal; }
}

/* PRINT (이력서 PDF) */
@media print {
  :root {
    --bg: #fff; --surface: #fff; --surface-2: #fff;
    --text: #000; --text-soft: #222; --muted: #555;
    --border: #ccc; --accent: #000; --accent-soft: #f2f2f2;
  }
  .page { padding: 0; max-width: 100%; }
  .card, .project { break-inside: avoid; }
  .block { margin-top: 28px; }
  a { color: #000; text-decoration: none; }
}