:root {
  --bg: #ffffff;
  --fg: #1a1a1a;
  --muted: #6a6a6a;
  --border: #e5e5e5;
  --accent: #1f5fbf;
  --card-bg: #fafafa;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Pretendard', 'Apple SD Gothic Neo', sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, monospace;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e1013;
    --fg: #e6e8eb;
    --muted: #9099a3;
    --border: #22262c;
    --accent: #6aa7ff;
    --card-bg: #16191d;
  }
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: var(--bg); color: var(--fg); }
body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
.wrap {
  max-width: 760px;
  margin: 0 auto;
  padding: 48px 24px 96px;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* Header */
header.hero {
  display: flex;
  gap: 24px;
  align-items: center;
  margin-bottom: 40px;
}
.avatar {
  width: 104px; height: 104px;
  border-radius: 50%;
  flex-shrink: 0;
  object-fit: cover;
  box-shadow: 0 4px 12px rgba(0,0,0,0.08);
  background: var(--card-bg);
}
.hero-text h1 {
  margin: 0 0 4px;
  font-size: 26px;
  font-weight: 700;
  letter-spacing: -0.015em;
}
.hero-text h1 .kor { font-weight: 500; color: var(--muted); margin-left: 6px; font-size: 20px; }
.hero-text .tagline {
  margin: 0 0 10px;
  color: var(--muted);
  font-size: 14.5px;
}
.contact-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13.5px;
}
.contact-row a {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  color: var(--fg);
  border-bottom: 1px solid transparent;
  padding-bottom: 1px;
}
.contact-row a:hover { color: var(--accent); border-bottom-color: var(--accent); text-decoration: none; }
.contact-row .sep { color: var(--border); }

/* Sections */
section { margin-bottom: 36px; }
h2 {
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--muted);
  margin: 0 0 14px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}
p { margin: 0 0 12px; }
.section-note { color: var(--muted); font-size: 14px; }

/* Entry list */
.entry {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 4px 16px;
  margin-bottom: 18px;
}
.entry:last-child { margin-bottom: 0; }
.entry .title {
  font-weight: 600;
  font-size: 15.5px;
}
.entry .meta {
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--muted);
  white-space: nowrap;
  align-self: start;
  padding-top: 3px;
}
.entry .sub {
  grid-column: 1 / -1;
  color: var(--muted);
  font-size: 14px;
  margin-top: 2px;
}
.entry .body {
  grid-column: 1 / -1;
  font-size: 14.5px;
  margin-top: 4px;
}
.badge {
  display: inline-block;
  font-size: 11.5px;
  font-family: var(--font-mono);
  color: var(--accent);
  background: color-mix(in oklab, var(--accent) 12%, transparent);
  padding: 1px 7px;
  border-radius: 3px;
  margin-left: 6px;
  vertical-align: 1px;
}

/* Project cards */
.projects { display: grid; gap: 14px; }
.project {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px 18px;
  background: var(--card-bg);
  overflow: hidden;
}
.project-hero {
  display: block;
  width: calc(100% + 36px);
  margin: -16px -18px 14px;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  background: #000;
  border-bottom: 1px solid var(--border);
}
.project h3 {
  margin: 0 0 6px;
  font-size: 15.5px;
  font-weight: 600;
}
.project h3 .meta {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted);
  font-weight: 400;
  margin-left: 8px;
}
.project p { margin: 0; font-size: 14px; color: var(--fg); }
.project .tags {
  margin-top: 8px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.project .tag {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--muted);
  border: 1px solid var(--border);
  padding: 1px 7px;
  border-radius: 3px;
}

/* Button group (reused for project actions) */
.btn-group {
  display: flex;
  gap: 8px;
  margin-top: 12px;
  flex-wrap: wrap;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 5px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--fg);
  background: var(--bg);
  transition: border-color 0.15s, color 0.15s, background 0.15s;
}
.btn:hover {
  border-color: var(--accent);
  color: var(--accent);
  text-decoration: none;
}
.btn-primary {
  background: var(--accent);
  color: #ffffff;
  border-color: var(--accent);
}
.btn-primary:hover {
  background: transparent;
  color: var(--accent);
}

/* Compact list */
ul.compact { list-style: none; padding: 0; margin: 0; }
ul.compact li {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 6px 0;
  font-size: 14.5px;
}
ul.compact li .meta {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted);
  white-space: nowrap;
}

/* Skills */
.skills-grid {
  display: grid;
  grid-template-columns: 130px 1fr;
  gap: 6px 20px;
  font-size: 14.5px;
}
.skills-grid dt {
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 12.5px;
  padding-top: 2px;
}
.skills-grid dd { margin: 0; }

/* Video grid (music sub-pages) */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 14px;
}
.video-card {
  display: block;
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  background: var(--card-bg);
  color: var(--fg);
  transition: border-color 0.15s, transform 0.15s;
}
.video-card:hover {
  border-color: var(--accent);
  text-decoration: none;
  transform: translateY(-1px);
}
.video-card .thumb {
  position: relative;
  aspect-ratio: 16 / 9;
  background: #000;
}
.video-card .thumb img {
  width: 100%; height: 100%;
  object-fit: cover;
  display: block;
}
.video-card .thumb::after {
  content: "▶";
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  color: #fff;
  font-size: 24px;
  text-shadow: 0 2px 8px rgba(0,0,0,0.5);
  opacity: 0.9;
}
.video-card .caption {
  padding: 10px 12px;
  font-size: 13.5px;
  line-height: 1.4;
}
.video-card .caption .meta {
  display: block;
  margin-top: 3px;
  color: var(--muted);
  font-size: 11.5px;
  font-family: var(--font-mono);
}

/* Photo gallery */
.photo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 10px;
}
.photo-item {
  aspect-ratio: 1 / 1;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
}
.photo-item img {
  width: 100%; height: 100%;
  object-fit: cover;
  display: block;
}

/* Sub-page (detail/videos) header */
.back-link {
  display: inline-block;
  margin-bottom: 24px;
  font-size: 13.5px;
  color: var(--muted);
  font-family: var(--font-mono);
}
.back-link:hover { color: var(--accent); }
.detail-hero {
  margin-bottom: 28px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--border);
}
.detail-hero h1 {
  font-size: 24px;
  margin: 0 0 6px;
  letter-spacing: -0.015em;
}
.detail-hero .meta {
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--muted);
}
.detail-content p { font-size: 15px; margin-bottom: 14px; }
.detail-content h3 {
  font-size: 14px;
  font-weight: 600;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin: 24px 0 8px;
}
.detail-content ul { padding-left: 20px; }
.detail-content li { margin: 4px 0; font-size: 15px; }
.detail-hero-img {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: 8px;
  margin: 0 0 24px;
  background: #000;
  border: 1px solid var(--border);
}
.figure {
  margin: 20px 0 24px;
}
.figure img {
  display: block;
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--card-bg);
}
.figure figcaption {
  font-size: 12.5px;
  color: var(--muted);
  margin-top: 6px;
  text-align: center;
  font-family: var(--font-mono);
}

/* Footer */
footer {
  margin-top: 60px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  font-size: 12.5px;
  color: var(--muted);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}

/* Mobile */
@media (max-width: 560px) {
  .wrap { padding: 32px 20px 64px; }
  header.hero { flex-direction: column; align-items: flex-start; gap: 16px; }
  .avatar { width: 80px; height: 80px; font-size: 30px; }
  .entry { grid-template-columns: 1fr; }
  .entry .meta { padding-top: 0; }
  .skills-grid { grid-template-columns: 1fr; gap: 2px 0; }
  .skills-grid dt { padding-top: 8px; }
  ul.compact li { flex-direction: column; gap: 2px; }
  ul.compact li .meta { align-self: flex-start; }
}