:root {
  --bg: #FFFFFF;
  --surface: #FFFFFF;
  --ink: #1E2422;
  --muted: #5C6B66;
  --line: #D6DBD3;
  --accent: #3E6259;
  --accent-soft: #EEF2EC;
  --tag-text: #335148;
  --status-dot: #3E8F6C;

  --font-display: ui-serif, Georgia, "Noto Serif KR", serif;
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", "Apple SD Gothic Neo", "Noto Sans KR", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Noto Sans Mono KR", monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14191A;
    --surface: #1A2022;
    --ink: #E6EAE6;
    --muted: #93A39C;
    --line: #2B332F;
    --accent: #7CB6A3;
    --accent-soft: #1E2927;
    --tag-text: #AFD9C8;
    --status-dot: #7CB6A3;
  }
}
:root[data-theme="dark"] {
  --bg: #14191A;
  --surface: #1A2022;
  --ink: #E6EAE6;
  --muted: #93A39C;
  --line: #2B332F;
  --accent: #7CB6A3;
  --accent-soft: #1E2927;
  --tag-text: #AFD9C8;
  --status-dot: #7CB6A3;
}
:root[data-theme="light"] {
  --bg: #FFFFFF;
  --surface: #FFFFFF;
  --ink: #1E2422;
  --muted: #5C6B66;
  --line: #D6DBD3;
  --accent: #3E6259;
  --accent-soft: #EEF2EC;
  --tag-text: #335148;
  --status-dot: #3E8F6C;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  line-height: 1.6;
}

a { color: var(--accent); text-decoration-color: var(--line); text-underline-offset: 3px; }
a:hover { text-decoration-color: var(--accent); }
a:focus-visible, button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 2px;
}

.page {
  max-width: 44rem;
  margin: 0 auto;
  padding: 4.5rem 1.5rem 6rem;
}

.util-bar {
  position: fixed;
  top: 1.25rem;
  right: 1.5rem;
  z-index: 10;
}
.util-bar button {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.02em;
  color: var(--muted);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 0.4rem 0.7rem;
  cursor: pointer;
}
.util-bar button:hover { color: var(--accent); border-color: var(--accent); }

.back-link {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--muted);
  margin-bottom: 2.5rem;
}
.back-link:hover { color: var(--accent); }

header.identity {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1.5rem;
  flex-wrap: wrap;
  margin-bottom: 1.25rem;
}
h1 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 2.25rem;
  line-height: 1.15;
  letter-spacing: -0.01em;
  margin: 0 0 0.35rem;
  text-wrap: balance;
}
.title-line {
  font-size: 1.0625rem;
  color: var(--muted);
  margin: 0;
}

.status {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 0.35rem 0.65rem;
  white-space: nowrap;
}
.status .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--status-dot);
  animation: pulse 2.4s ease-in-out infinite;
}
@media (prefers-reduced-motion: reduce) {
  .status .dot { animation: none; }
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0 0.85rem;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--muted);
  margin: 0 0 2.75rem;
  padding-bottom: 1.75rem;
  border-bottom: 1px solid var(--line);
}
.meta-row span::after {
  content: "·";
  margin-left: 0.85rem;
  color: var(--line);
}
.meta-row span:last-child::after { content: none; }
.meta-row a { color: var(--muted); }
.meta-row a:hover { color: var(--accent); }

section { margin-bottom: 3rem; }
section:last-of-type { margin-bottom: 0; }

.section-label {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 1.1rem;
}

.summary p {
  font-size: 1.0625rem;
  max-width: 38rem;
  margin: 0;
}

.stack-group {
  display: grid;
  grid-template-columns: 9rem 1fr;
  gap: 0.6rem 1rem;
  margin-bottom: 0.7rem;
  align-items: baseline;
}
.stack-group:last-child { margin-bottom: 0; }
.stack-group dt {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--muted);
}
.stack-group dd {
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}
.tag {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--tag-text);
  background: var(--accent-soft);
  border-radius: 4px;
  padding: 0.2rem 0.55rem;
  line-height: 1.5;
}

article.entry {
  padding-bottom: 1.75rem;
  margin-bottom: 1.75rem;
  border-bottom: 1px solid var(--line);
}
article.entry:last-child {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}
.entry-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 0.3rem;
}
.entry-head h3 {
  font-size: 1.0625rem;
  font-weight: 600;
  margin: 0;
}
.entry-head .dates {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}
.entry-role {
  font-size: 0.9375rem;
  color: var(--muted);
  margin: 0 0 0.85rem;
}
.entry-summary {
  margin: 0 0 0.9rem;
}
.entry ul {
  margin: 0 0 0.9rem;
  padding-left: 1.1rem;
}
.entry li { margin-bottom: 0.4rem; }
.entry li:last-child { margin-bottom: 0; }
.entry .tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.project-link {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
}

footer {
  margin-top: 4rem;
  padding-top: 1.75rem;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--muted);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
}

@media (max-width: 560px) {
  .page { padding: 3.5rem 1.25rem 4rem; }
  h1 { font-size: 1.85rem; }
  .stack-group { grid-template-columns: 1fr; gap: 0.35rem; }
  .util-bar { top: 0.85rem; right: 0.85rem; }
}

@page {
  size: A4;
  margin: 14mm 12mm;
}

@media print {
  :root {
    --bg: #FFFFFF;
    --surface: #FFFFFF;
    --ink: #111111;
    --muted: #444444;
    --line: #CCCCCC;
    --accent: #2F4A43;
    --accent-soft: #FFFFFF;
    --tag-text: #2F4A43;
  }
  * {
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
  }
  .util-bar { display: none; }
  .status .dot { animation: none; }
  body { font-size: 11pt; }
  .page { padding: 0; max-width: 100%; }
  .tag { border: 1px solid var(--line); }
  article.entry,
  .stack-group,
  header.identity {
    break-inside: avoid;
    page-break-inside: avoid;
  }
  .section-label { break-after: avoid; page-break-after: avoid; }
  a { text-decoration: none; }
}