/* ── tokens ── */
:root {
  --color-bg:          #f5f3ee;
  --color-surface:     #ffffff;
  --color-border:      #d8d3c8;
  --color-text:        #1a1a1a;
  --color-muted:       #6b6560;
  --color-accent:      #c0392b;
  --color-tag-journal: #2980b9;
  --color-tag-conf:    #27ae60;
  --color-tag-work:    #8e44ad;
  --color-tag-event:   #d35400;

  --font-sans: 'IBM Plex Sans', system-ui, sans-serif;
  --font-mono: 'IBM Plex Mono', 'Courier New', monospace;

  --frame-width: 780px;
  --frame-pad:   2rem;
  --radius:      2px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg:      #1a1916;
    --color-surface: #242220;
    --color-border:  #3a3730;
    --color-text:    #e8e4dc;
    --color-muted:   #9a948c;
  }
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  font-size: 0.9rem;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
}

a { color: var(--color-accent); }
a:hover { opacity: 0.8; }

/* ── topbar ── */
.t-topbar {
  background: var(--color-text);
  color: var(--color-bg);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.45rem var(--frame-pad);
  justify-content: center;
}

.t-topbar-dot { color: var(--color-accent); }

.t-topbar-cta {
  color: var(--color-accent);
  text-decoration: none;
  font-weight: 600;
  margin-left: auto;
}
.t-topbar-cta:hover { opacity: 0.75; }

/* ── page & frame ── */
.t-page { background: var(--color-bg); min-height: 100vh; }

.t-frame {
  max-width: var(--frame-width);
  margin: 0 auto;
  padding: 0 var(--frame-pad) 4rem;
}

/* ── nav ── */
.t-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 0 1rem;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 2rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
}

.t-nav-brand { color: var(--color-muted); }

.t-nav-links { display: flex; gap: 1.5rem; }

.t-nav-link {
  color: var(--color-muted);
  text-decoration: none;
  font-weight: 600;
  letter-spacing: 0.08em;
}
.t-nav-link.active,
.t-nav-link:hover { color: var(--color-text); }
.t-nav-link.active::before { content: '• '; color: var(--color-accent); }

/* ── hero ── */
.t-hero {
  display: flex;
  gap: 2.5rem;
  align-items: flex-start;
  padding: 1rem 0 0.5rem;
}

.t-portrait {
  width: 150px;
  height: 150px;
  object-fit: cover;
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  flex-shrink: 0;
  background: var(--color-surface);
}

.t-portrait-placeholder {
  width: 150px;
  height: 150px;
  flex-shrink: 0;
  border-radius: var(--radius);
  border: 1px dashed var(--color-border);
  background: var(--color-surface);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--color-muted);
  text-align: center;
  line-height: 1.4;
}

.t-portrait-cap {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--color-muted);
  margin-top: 0.4rem;
  text-align: center;
}

.t-hero h1 {
  font-size: 2rem;
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: 0.6rem;
  letter-spacing: -0.01em;
}

/* ── thesis / tagline ── */
.t-thesis {
  font-size: 0.88rem;
  color: var(--color-muted);
  margin-bottom: 1.25rem;
  line-height: 1.5;
}

.t-thesis[data-typing] .t-thesis-text::after {
  content: '|';
  animation: blink 1s step-end infinite;
  color: var(--color-accent);
  margin-left: 1px;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0; }
}

/* ── key-value ── */
.t-kv {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.25rem 1rem;
  font-size: 0.82rem;
  align-items: baseline;
}

.t-kv dt {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-muted);
  white-space: nowrap;
}

.t-kv dd { color: var(--color-text); }

.t-kv-links {
  display: flex;
  gap: 0.75rem;
  align-items: center;
  font-size: 1.05rem;
}

.t-kv-links a {
  color: var(--color-muted);
  text-decoration: none;
}
.t-kv-links a:hover { color: var(--color-text); }

/* ── divider ── */
.t-divider {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px dashed var(--color-border);
  padding: 0.5rem 0 0.25rem;
  margin: 2rem 0 1rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.t-divider-right { color: var(--color-muted); }
.t-divider-right a { color: var(--color-muted); text-decoration: none; }
.t-divider-right a:hover { color: var(--color-text); }

/* ── project cards ── */
.t-projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1rem;
}

.t-project-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1rem 1.1rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.t-project-title {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text);
}

.t-project-desc {
  font-size: 0.82rem;
  color: var(--color-muted);
  flex: 1;
  line-height: 1.5;
}

.t-project-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
  margin-top: 0.2rem;
}

.t-project-stack span {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 0.1em 0.45em;
  color: var(--color-muted);
  text-transform: uppercase;
}

.t-project-links {
  display: flex;
  gap: 0.75rem;
  margin-top: 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.t-project-links a {
  color: var(--color-accent);
  text-decoration: none;
}
.t-project-links a:hover { opacity: 0.75; }

/* ── news rows ── */
.t-news-list { display: flex; flex-direction: column; gap: 0.6rem; }

.t-news-row {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  font-size: 0.82rem;
  line-height: 1.5;
}

.t-news-date {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--color-accent);
  white-space: nowrap;
  min-width: 4.5rem;
}

.t-news-text { color: var(--color-text); }
.t-news-text a { color: var(--color-accent); text-decoration: none; }
.t-news-text a:hover { opacity: 0.75; }

/* ── tags ── */
.t-tag {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  padding: 0.1em 0.4em;
  border-radius: var(--radius);
  text-transform: uppercase;
}

[data-kind="work"]  { color: var(--color-tag-work); border: 1px solid var(--color-tag-work); }
[data-kind="event"] { color: var(--color-tag-event); border: 1px solid var(--color-tag-event); }
[data-kind="conf"]  { color: var(--color-tag-conf); border: 1px solid var(--color-tag-conf); }
[data-kind="oss"]   { color: var(--color-tag-journal); border: 1px solid var(--color-tag-journal); }

/* ── caret ── */
.t-caret { color: var(--color-accent); margin-right: 0.25rem; }

/* ── contribution blocks ── */
.t-contrib-repo-block {
  margin-bottom: 1.25rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
}

.t-contrib-repo-header {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  background: var(--color-surface);
  padding: 0.6rem 0.9rem;
  border-bottom: 1px solid var(--color-border);
  flex-wrap: wrap;
}

.t-contrib-repo-header a {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--color-text);
  text-decoration: none;
}
.t-contrib-repo-header a:hover { color: var(--color-accent); }

.t-contrib-repo-desc {
  font-size: 0.78rem;
  color: var(--color-muted);
  flex: 1;
}

.t-contrib-count {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 600;
  color: var(--color-accent);
  letter-spacing: 0.04em;
  margin-left: auto;
  white-space: nowrap;
}

.t-pr-list { display: flex; flex-direction: column; }

.t-pr-row {
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
  padding: 0.38rem 0.9rem;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.8rem;
}
.t-pr-row:last-child { border-bottom: none; }
.t-pr-row:hover { background: var(--color-bg); }

.t-pr-date {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--color-muted);
  white-space: nowrap;
  min-width: 5rem;
}

.t-pr-title {
  flex: 1;
  color: var(--color-text);
  text-decoration: none;
  line-height: 1.4;
}
.t-pr-title:hover { color: var(--color-accent); }

.t-pr-num {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--color-muted);
  white-space: nowrap;
}

.t-pr-repo {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--color-muted);
}

.t-contrib-repo-label {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--color-text);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

@media (max-width: 600px) {
  .t-pr-row { flex-wrap: wrap; gap: 0.2rem; }
  .t-pr-date { min-width: unset; }
  .t-pr-num { display: none; }
  .t-contrib-repo-desc { display: none; }
}

/* ── misc page ── */
.t-misc-section { margin-bottom: 1.5rem; }

.t-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  padding: 0;
}

.t-list li {
  font-size: 0.82rem;
  color: var(--color-text);
  display: flex;
  align-items: baseline;
  gap: 0.4rem;
}

/* ── footer ── */
.t-footer {
  border-top: 1px solid var(--color-border);
  padding: 1.5rem var(--frame-pad);
  max-width: var(--frame-width);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.05em;
}

.t-footer-links { display: flex; gap: 1.25rem; }
.t-footer-links a { color: var(--color-muted); text-decoration: none; }
.t-footer-links a:hover { color: var(--color-text); }

.t-footer-built { color: var(--color-muted); }

/* ── 404 ── */
.t-404 {
  padding: 4rem 0;
  font-family: var(--font-mono);
}
.t-404-code { font-size: 4rem; font-weight: 700; color: var(--color-accent); line-height: 1; }
.t-404-msg  { font-size: 1rem; color: var(--color-muted); margin: 0.75rem 0 1.5rem; }
.t-404 a    { color: var(--color-accent); text-decoration: none; font-weight: 600; }

/* ── responsive ── */
@media (max-width: 600px) {
  :root { --frame-pad: 1rem; }

  .t-hero { flex-direction: column; gap: 1.25rem; }
  .t-portrait,
  .t-portrait-placeholder { width: 110px; height: 110px; }
  .t-nav-links { display: none; }
  .t-footer { flex-direction: column; gap: 0.75rem; align-items: flex-start; }
  .t-projects-grid { grid-template-columns: 1fr; }
  .t-hero h1 { font-size: 1.5rem; }
  .t-topbar { font-size: 0.65rem; }
}

/* ── print ── */
@media print {
  .t-topbar, .t-nav, .t-footer { display: none; }
}