:root {
  --bg: #ffffff;
  --bg-subtle: #f7f7f8;
  --border: #e5e5e8;
  --text: #1a1a1e;
  --text-muted: #6b6b72;
  --accent: #3b5bdb;
  --accent-contrast: #ffffff;
  --chip-bg: #eef1fb;
  --shadow: 0 1px 2px rgba(0,0,0,0.04), 0 4px 12px rgba(0,0,0,0.04);
}

[data-theme="dark"] {
  --bg: #16161a;
  --bg-subtle: #1e1e23;
  --border: #2c2c33;
  --text: #f1f1f3;
  --text-muted: #9a9aa2;
  --accent: #6d87f2;
  --accent-contrast: #101014;
  --chip-bg: #23283a;
  --shadow: 0 1px 2px rgba(0,0,0,0.3), 0 4px 16px rgba(0,0,0,0.3);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  scroll-behavior: smooth;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Noto Sans KR', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  line-height: 1.6;
  transition: background 0.2s ease, color 0.2s ease;
}

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

/* ---------- NAV ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 14px 28px;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}

.nav-title {
  font-weight: 700;
  font-size: 18px;
  letter-spacing: -0.02em;
}

.nav-links {
  display: flex;
  gap: 20px;
  flex: 1;
}

.nav-links a {
  font-size: 14px;
  color: var(--text-muted);
  font-weight: 500;
  white-space: nowrap;
}

.nav-links a:hover { color: var(--accent); }

.nav-controls {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
}

.icon-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  cursor: pointer;
  font-size: 12px;
  font-weight: 700;
  font-family: inherit;
}

.icon-btn:hover { border-color: var(--accent); color: var(--accent); }

.nav-hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  width: 34px;
  height: 34px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg);
  cursor: pointer;
}

.nav-hamburger span {
  display: block;
  width: 16px;
  height: 2px;
  margin: 0 auto;
  background: var(--text);
}

/* ---------- LAYOUT ---------- */
main {
  max-width: 980px;
  margin: 0 auto;
  padding: 40px 28px 80px;
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 32px;
  align-items: start;
}

/* ---------- PROFILE PANEL ---------- */
.profile-panel {
  position: sticky;
  top: 84px;
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 28px 22px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  box-shadow: var(--shadow);
}

.profile-photo {
  width: 104px;
  height: 104px;
  border-radius: 50%;
  overflow: hidden;
  border: 3px solid var(--bg);
  box-shadow: var(--shadow);
}

.profile-photo img { width: 100%; height: 100%; object-fit: cover; display: block; }

.profile-name-ko { font-size: 20px; font-weight: 700; text-align: center; }
.profile-name-en { font-size: 13px; color: var(--text-muted); text-align: center; }

.profile-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  justify-content: center;
}

.chip {
  background: var(--chip-bg);
  color: var(--accent);
  font-size: 11px;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 999px;
}

.profile-block {
  width: 100%;
  border-top: 1px solid var(--border);
  padding-top: 12px;
  font-size: 13px;
}

.profile-block-title {
  font-size: 11px;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 6px;
}

.profile-row { display: flex; justify-content: space-between; gap: 8px; padding: 2px 0; }
.profile-row .k { color: var(--text-muted); }
.profile-row .v { text-align: right; word-break: break-all; }

.social-links { display: flex; gap: 8px; flex-wrap: wrap; }
.social-links a {
  font-size: 12px;
  font-weight: 600;
  color: var(--accent);
  border: 1px solid var(--border);
  padding: 4px 10px;
  border-radius: 999px;
}
.social-links a:hover { border-color: var(--accent); }

/* ---------- CONTENT PANEL ---------- */
.content-panel { display: flex; flex-direction: column; gap: 36px; }

.cv-section:empty { display: none; }

.section-title {
  font-size: 13px;
  font-weight: 700;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin: 0 0 14px;
}

.intro-text { font-size: 15px; color: var(--text); }

.entry {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 16px;
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
}
.entry:last-child { border-bottom: none; }

.entry-period { font-size: 12.5px; color: var(--text-muted); font-weight: 600; white-space: nowrap; }
.entry-title { font-size: 15px; font-weight: 700; }
.entry-sub { font-size: 13px; color: var(--text-muted); margin-top: 2px; }
.entry-desc { font-size: 13.5px; margin-top: 6px; color: var(--text); }
.entry-tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  color: var(--accent);
  background: var(--chip-bg);
  padding: 2px 8px;
  border-radius: 999px;
  margin-bottom: 4px;
}

.entry-links { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 8px; }
.entry-links a {
  font-size: 12px;
  font-weight: 600;
  color: var(--accent);
  border: 1px solid var(--border);
  padding: 3px 10px;
  border-radius: 999px;
}
.entry-links a:hover { border-color: var(--accent); background: var(--chip-bg); }

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.skills-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.skill-group-title { font-size: 12.5px; font-weight: 700; color: var(--text-muted); margin-bottom: 6px; }
.skill-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.skill-tags span { font-size: 12px; background: var(--bg-subtle); border: 1px solid var(--border); padding: 3px 9px; border-radius: 8px; }

/* ---------- RESPONSIVE ---------- */
@media (max-width: 768px) {
  .nav { padding: 12px 16px; gap: 12px; }
  .nav-hamburger { display: flex; }
  .nav-title { flex: 1; }
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    padding: 12px 20px;
    gap: 12px;
  }
  .nav-links.open { display: flex; }

  main { grid-template-columns: 1fr; padding: 24px 16px 60px; }
  .profile-panel { position: static; }
  .entry { grid-template-columns: 1fr; gap: 4px; }
  .skills-grid { grid-template-columns: 1fr; }
}

/* ---------- PRINT ---------- */
@media print {
  [data-theme="dark"] {
    --bg: #ffffff; --bg-subtle: #f7f7f8; --border: #e5e5e8;
    --text: #1a1a1e; --text-muted: #6b6b72; --chip-bg: #eef1fb;
  }
  .nav-hamburger, #printBtn, #themeToggle, #langToggle { display: none !important; }
  .nav { position: static; }
  .profile-panel { position: static; box-shadow: none; }
  main { grid-template-columns: 220px 1fr; }
  body { -webkit-print-color-adjust: exact; print-color-adjust: exact; }
}