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

:root {
  --bg:             #F7F7F5;
  --surface:        #FCFCFA;
  --border:         #DCDCDC;
  --border-subtle:  #EBEBEB;
  --text:           #1F1F1F;
  --text-secondary: #525252;
  --text-tertiary:  #989898;
  --accent:         #989898;
  --radius:         8px;
  --radius-sm:      4px;
}

h1, h2, h3 { font-family: 'Lora', Georgia, serif; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ── Header ─────────────────────────────────── */
header {
  background: var(--text);
  min-height: 110px;
  display: flex;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 10;
}

.header-inner {
  display: flex;
  align-items: center;
  width: 100%;
  max-width: 1160px;
  margin: 0 auto;
  padding: 12px 40px;
}

/* Row aligned with the prose column: 160px offset for side-nav, capped at hero content width (900 - 80 padding) */
.header-row {
  display: flex;
  align-items: center;
  flex: 1;
  min-width: 0;
  margin-left: 160px;
  max-width: 820px;
}

.header-identity {
  display: inline-flex;
  align-items: center;
  gap: 18px;
  min-width: 0;
}

.header-link { margin-left: auto; margin-right: 8px; }

.header-avatar {
  width: 88px;
  height: 88px;
  border-radius: 50%;
  object-fit: cover;
  border: 1px solid rgba(255, 255, 255, 0.15);
  background: var(--surface);
  flex-shrink: 0;
}

.header-name {
  font-family: 'Lora', Georgia, serif;
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--bg);
  white-space: nowrap;
  display: block;
}

.header-sep { display: none; }

.header-title {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-tertiary);
  white-space: nowrap;
  display: block;
}

.header-name-block {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.wordmark {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--bg);
  text-decoration: none;
}

.wordmark:hover { color: var(--text-tertiary); }

.header-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 16px;
  color: var(--bg);
  text-decoration: none;
}

.header-link:hover { color: var(--text-tertiary); }

.header-link-icon { display: block; width: 20px; height: 20px; }

/* ── Hero ────────────────────────────────────── */
.hero {
  max-width: 900px;
  margin: 0;
  padding: 64px 40px 56px;
}

/* ── Sections ────────────────────────────────── */
.section {
  max-width: 900px;
  margin: 0;
  padding: 0 40px 56px;
}

.section-label {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-tertiary);
  margin-bottom: 16px;
}

hr.divider {
  border: none;
  border-top: 1px solid var(--border);
  margin-bottom: 32px;
}

/* ── Project grid ────────────────────────────── */
.proto-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(264px, 1fr));
  gap: 14px;
}

/* ── Project card ────────────────────────────── */
.card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 22px 18px;
  color: inherit;
  transition: box-shadow 0.15s ease, border-color 0.15s ease, transform 0.15s ease;
  min-height: 108px;
}

.card:has(.card-link:hover) {
  box-shadow: 0 6px 24px rgba(31,31,31,0.1);
  border-color: var(--accent);
  transform: translateY(-2px);
}

.card-link { text-decoration: none; color: inherit; }
.card-link::after { content: ''; position: absolute; inset: 0; }

.card-top { margin-bottom: 14px; }

.card-title {
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  letter-spacing: -0.01em;
  margin-bottom: 4px;
}

.card-description {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.5;
}

.card-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.card-left { font-size: 12px; color: var(--text-tertiary); }

.card-right {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.card-repo { position: relative; z-index: 1; font-size: 12px; color: var(--text-tertiary); text-decoration: none; }
.card-repo:hover { color: var(--accent); text-decoration: underline; }

/* ── About prose ─────────────────────────────── */
.prose {
  max-width: 665px;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

.prose p { margin-bottom: 12px; }
.prose p:last-child { margin-bottom: 0; }
.prose strong { color: var(--text); }
.prose em { font-style: italic; }
.prose a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid rgba(31, 31, 31, 0.25);
}
.prose a:hover { border-bottom-color: var(--accent); }

.hero-prose { margin-top: 0; max-width: none; }

/* ── Footer ──────────────────────────────────── */
footer {
  max-width: 900px;
  margin: 0;
  display: flex;
  justify-content: center;
  padding: 24px 40px 56px;
  border-top: 1px solid var(--border);
}

footer img {
  width: 130px;
  height: 70px;
  object-fit: cover;
  object-position: center;
  opacity: 0.85;
}

/* ── Page wrapper + side nav ─────────────────── */
.page-wrapper {
  display: flex;
  align-items: flex-start;
  max-width: 1160px;
  margin: 0 auto;
}

.side-nav {
  width: 160px;
  flex-shrink: 0;
  position: sticky;
  top: 120px;
  padding-top: 64px;
  padding-left: 40px;
}

.side-nav-item {
  display: block;
  font-size: 13px;
  color: var(--text-tertiary);
  text-decoration: none;
  padding: 5px 0 5px 12px;
  border-left: 2px solid transparent;
  transition: color 0.15s, border-color 0.15s;
  cursor: pointer;
  background: none;
  border-top: none;
  border-right: none;
  border-bottom: none;
  font-family: inherit;
  width: 100%;
  text-align: left;
}

.side-nav-item:hover { color: var(--text-secondary); }

.side-nav-item.active {
  color: var(--accent);
  border-left-color: var(--accent);
}

.main-content { flex: 1; min-width: 0; overflow-x: hidden; }

/* ── Responsive ──────────────────────────────── */
@media (max-width: 640px) {
  header { min-height: 96px; }
  .header-inner { padding: 12px 20px; }
  .header-row { margin-left: 0; max-width: none; }
  .header-identity { gap: 12px; }
  .header-avatar { width: 56px; height: 56px; }
  .header-name { font-size: 17px; }
  .header-title { display: none; }
  .hero { padding: 48px 20px 40px; }
  .section { padding: 0 20px 40px; }
  footer { padding: 24px 20px 40px; flex-direction: column; gap: 8px; align-items: flex-start; }
  .side-nav { display: none; }
}