:root {
  --bg:       #FFFCF0;
  --text:     #100F0F;
  --text-2:   #3d3b38;
  --accent:   #1a4f8a;
  --card-bg:  #ffffff;
  --border:   #DAD8CE;
  --tag-bg:   #E6E4D9;
  --tag-text: #403E3C;
}

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

html { font-size: 19px; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: Georgia, 'Times New Roman', serif;
  line-height: 1.75;
  max-width: 860px;
  margin: 0 auto;
  padding: 0 1.25rem 5rem;
}

/* ── HEADER ──────────────────────────────── */

.site-header {
  text-align: center;
  padding: 3.5rem 0 3rem;
  margin-bottom: 3rem;
}

.photo {
  display: block;
  width: 160px;
  height: 160px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--border);
  background: var(--card-bg);
  margin: 0 auto 1.25rem;
}

.site-header h1 {
  font-size: 1.9rem;
  font-weight: normal;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin-bottom: 0.4rem;
}

.role {
  font-family: 'Courier New', Courier, monospace;
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--text-2);
  margin-bottom: 0.65rem;
}

.tagline {
  font-size: 0.97rem;
  color: var(--text-2);
  font-style: italic;
  max-width: 480px;
  margin: 0 auto;
  line-height: 1.55;
}

/* ── SECTION HEADINGS ────────────────────── */

h2 {
  font-size: 1.5rem;
  color: var(--text-2);
  border-bottom: 1px solid var(--border);
  margin-bottom: 1.5rem;
}

section { margin-bottom: 3rem; }

/* ── ABOUT ───────────────────────────────── */

.about p {
  font-size: 1rem;
  margin-bottom: 1rem;
}

.about p:last-child { margin-bottom: 0; }

a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 2px;
  text-decoration-thickness: 1px;
}

a:hover { text-decoration-thickness: 2px; }

/* ── PROJECTS ────────────────────────────── */

.projects-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 1.2rem 1.25rem 1.1rem;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  font-size: 1rem;
  min-width: 0;
}

.card-top {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 0.5rem;
}

.card-title {
  font-weight: bold;
  line-height: 1.3;
}

.card-year {
  font-size: 0.75rem;
  color: var(--text-2);
  white-space: nowrap;
  flex-shrink: 0;
}

.card-role {
  font-size: 0.9rem;
  font-style: italic;
  color: var(--text-2);
  line-height: 1.35;
}

.card-desc {
  font-size: 1rem;
  line-height: 1.6;
  flex-grow: 1;
}

ul.card-desc {
  padding-left: 1.2rem;
  flex-grow: 0;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
  margin-top: 0.2rem;
}

.tag {
  background: var(--tag-bg);
  color: var(--tag-text);
  font-family: 'Courier New', Courier, monospace;
  font-size: 0.7rem;
  letter-spacing: 0.02em;
  padding: 0.15rem 0.45rem;
  border-radius: 2px;
}

.card-link {
  font-family: 'Courier New', Courier, monospace;
  margin-top: 0.1rem;
}

/* ── GPG ─────────────────────────────────── */

details {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 3px;
}

summary {
  padding: 0.7rem 1rem;
  font-family: 'Courier New', Courier, monospace;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--text-2);
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  user-select: none;
}

summary::-webkit-details-marker { display: none; }

summary::before {
  content: '▶';
  font-size: 0.55rem;
  transition: transform 0.15s ease;
  display: inline-block;
}

details[open] summary::before { transform: rotate(90deg); }

details pre {
  border-top: 1px solid var(--border);
  padding: 1rem;
  font-family: 'Courier New', Courier, monospace;
  font-size: 0.68rem;
  line-height: 1.55;
  color: var(--text-2);
  word-break: break-all;
  white-space: pre-wrap;
  overflow-x: auto;
}

/* ── FOOTER ──────────────────────────────── */

footer {
  border-top: 1px solid var(--border);
  padding-top: 1.5rem;
  margin-top: 1rem;
  color: var(--text-2);
}

/* ── RESPONSIVE ──────────────────────────── */

@media (max-width: 720px) {
  html { font-size: 17px; }

  .site-header { padding: 2.5rem 0 2.25rem; }

  .projects-grid { grid-template-columns: 1fr; }
}