/* Portfolio - Minimal academic dark mode */
:root {
  --bg: oklch(0.16 0.005 280);
  --bg-elev: oklch(0.20 0.006 280);
  --bg-card: oklch(0.18 0.006 280);
  --line: oklch(0.30 0.008 280);
  --line-soft: oklch(0.24 0.006 280);
  --text: oklch(0.94 0.005 80);
  --text-dim: oklch(0.72 0.006 80);
  --text-muted: oklch(0.55 0.006 80);
  --accent: oklch(0.78 0.12 65);
  --accent-deep: oklch(0.65 0.13 60);
  --accent-soft: oklch(0.78 0.12 65 / 0.16);
  --good: oklch(0.78 0.10 145);
  --warn: oklch(0.78 0.13 80);
  --bad: oklch(0.70 0.13 30);
  --serif: "Newsreader", "Iowan Old Style", "Charter", Georgia, serif;
  --sans: "Geist", "Söhne", -apple-system, "Segoe UI", system-ui, sans-serif;
  --mono: "Geist Mono", "JetBrains Mono", "SF Mono", ui-monospace, monospace;
  --maxw: 1180px;
  --gutter: 56px;
}

* { box-sizing: border-box; }
html, body {
  margin: 0; padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
body {
  background-image:
    radial-gradient(1100px 700px at 75% -10%, oklch(0.78 0.12 65 / 0.05), transparent 60%),
    radial-gradient(900px 600px at -10% 30%, oklch(0.50 0.10 260 / 0.04), transparent 60%);
  background-attachment: fixed;
}
a { color: inherit; text-decoration: none; }
::selection { background: var(--accent-soft); color: var(--text); }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 var(--gutter); }

/* ── NAV ─────────────────────────────────────────────────── */
.nav {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: blur(14px);
  background: oklch(0.16 0.005 280 / 0.7);
  border-bottom: 1px solid var(--line-soft);
}
.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 64px;
}
.nav-mark {
  font-family: var(--serif);
  font-size: 22px;
  font-style: italic;
  font-weight: 400;
  letter-spacing: -0.01em;
}
.nav-mark span { color: var(--accent); }
.nav-links {
  display: flex; gap: 28px;
  font-family: var(--mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-dim);
}
.nav-links a { transition: color 0.15s; padding: 4px 0; }
.nav-links a:hover { color: var(--text); }
.nav-cta {
  font-family: var(--mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 8px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  transition: all 0.15s;
}
.nav-cta:hover { border-color: var(--accent); color: var(--accent); }

/* ── HERO ────────────────────────────────────────────────── */
.hero { padding: 120px 0 100px; position: relative; }
.hero-meta {
  font-family: var(--mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--text-muted);
  display: flex; gap: 24px; align-items: center;
  margin-bottom: 32px;
}
.hero-meta .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--good); box-shadow: 0 0 10px var(--good); }
.hero h1 {
  font-family: var(--serif);
  font-weight: 300;
  font-size: clamp(60px, 9vw, 124px);
  line-height: 0.95;
  letter-spacing: -0.035em;
  margin: 0 0 24px;
  text-wrap: pretty;
}
.hero h1 em {
  font-style: italic;
  color: var(--accent);
  font-weight: 300;
}
.hero-sub {
  font-family: var(--serif);
  font-size: clamp(20px, 2.2vw, 26px);
  line-height: 1.4;
  color: var(--text-dim);
  max-width: 720px;
  font-weight: 300;
  text-wrap: pretty;
}
.hero-grid {
  display: grid;
  grid-template-columns: 2.4fr 1fr;
  gap: 60px;
  align-items: end;
  margin-top: 80px;
  padding-top: 32px;
  border-top: 1px solid var(--line-soft);
}
.hero-side { font-family: var(--mono); font-size: 12px; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.1em; }
.hero-side dt { color: var(--text-muted); margin-bottom: 4px; }
.hero-side dd { margin: 0 0 18px; color: var(--text); text-transform: none; letter-spacing: 0; font-family: var(--sans); font-size: 14px; }
.hero-side dd a:hover { color: var(--accent); }

/* ── SECTION SCAFFOLD ─────────────────────────────────── */
.section { padding: 120px 0; border-top: 1px solid var(--line-soft); }
.section-head {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 60px;
  margin-bottom: 64px;
  align-items: baseline;
}
.section-num {
  font-family: var(--mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--text-muted);
}
.section-num span { color: var(--accent); margin-right: 12px; }
.section-title {
  font-family: var(--serif);
  font-weight: 300;
  font-size: clamp(36px, 5vw, 56px);
  line-height: 1.05;
  letter-spacing: -0.025em;
  margin: 0;
}
.section-title em { font-style: italic; color: var(--accent); }

/* ── ABOUT ───────────────────────────────────────────────── */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 60px;
}
.about-prose {
  font-family: var(--serif);
  font-size: 22px;
  line-height: 1.55;
  color: var(--text);
  font-weight: 300;
  text-wrap: pretty;
}
.about-prose p { margin: 0 0 1.1em; }
.about-prose p:first-child::first-letter {
  font-family: var(--serif);
  float: left;
  font-size: 84px;
  line-height: 0.85;
  padding: 8px 12px 0 0;
  font-weight: 400;
  color: var(--accent);
  font-style: italic;
}
.about-side dl { margin: 0; font-family: var(--mono); font-size: 12px; }
.about-side dt {
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  margin-bottom: 4px;
}
.about-side dd {
  margin: 0 0 22px;
  font-family: var(--sans);
  font-size: 14px;
  color: var(--text);
}

/* ── PROJECTS ────────────────────────────────────────────── */
.projects-list { display: flex; flex-direction: column; }
.project {
  display: grid;
  grid-template-columns: 80px 1fr 1.4fr 80px;
  gap: 32px;
  padding: 36px 0;
  border-top: 1px solid var(--line-soft);
  align-items: start;
  cursor: pointer;
  transition: background 0.2s;
  position: relative;
}
.project:last-child { border-bottom: 1px solid var(--line-soft); }
.project:hover { background: oklch(0.20 0.006 280 / 0.4); }
.project:hover .project-name { color: var(--accent); }
.project-num { font-family: var(--mono); font-size: 12px; color: var(--text-muted); padding-top: 6px; }
.project-meta { font-family: var(--mono); font-size: 11px; text-transform: uppercase; letter-spacing: 0.1em; color: var(--text-muted); }
.project-meta .tag { display: block; color: var(--accent); margin-bottom: 4px; }
.project-meta .year { display: block; color: var(--text-muted); }
.project-name {
  font-family: var(--serif);
  font-weight: 300;
  font-size: 32px;
  line-height: 1.1;
  margin: 0 0 12px;
  letter-spacing: -0.02em;
  transition: color 0.2s;
}
.project-blurb { color: var(--text-dim); margin: 0 0 14px; max-width: 56ch; }
.project-stack {
  display: flex; flex-wrap: wrap; gap: 6px;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text-muted);
}
.project-stack span {
  padding: 2px 8px;
  border: 1px solid var(--line-soft);
  border-radius: 3px;
}
.project-arrow {
  font-family: var(--mono);
  font-size: 24px;
  color: var(--text-muted);
  text-align: right;
  padding-top: 4px;
  transition: transform 0.2s, color 0.2s;
}
.project:hover .project-arrow { color: var(--accent); transform: translateX(4px); }

/* Expanded panel */
.project-expand {
  grid-column: 1 / -1;
  display: none;
  padding: 24px 0 0;
  margin-top: 24px;
  border-top: 1px dashed var(--line-soft);
  animation: fade 0.3s ease;
}
.project.open .project-expand { display: grid; grid-template-columns: 80px 1fr 1.4fr 80px; gap: 32px; }
.project-details {
  grid-column: 3 / 4;
  font-family: var(--serif);
  font-size: 17px;
  line-height: 1.6;
  color: var(--text-dim);
}
.project-details ul { padding-left: 18px; margin: 0; }
.project-details li { margin-bottom: 10px; }
.project-link {
  grid-column: 3 / 4;
  margin-top: 18px;
  display: inline-block;
  font-family: var(--mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  border-bottom: 1px solid var(--accent);
  padding-bottom: 2px;
  width: fit-content;
}
.project-link.disabled { color: var(--text-muted); border-color: var(--line); cursor: default; }
@keyframes fade { from { opacity: 0; transform: translateY(-4px); } to { opacity: 1; transform: none; } }

/* ── COURSEWORK ──────────────────────────────────────────── */
.course-toolbar {
  display: flex; gap: 20px; align-items: center;
  margin-bottom: 32px;
  font-family: var(--mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.course-toolbar .lbl { color: var(--text-muted); }
.course-toolbar .seg {
  display: inline-flex;
  border: 1px solid var(--line);
  border-radius: 6px;
  overflow: hidden;
}
.course-toolbar .seg button {
  padding: 6px 14px;
  background: transparent;
  border: none;
  color: var(--text-dim);
  font-family: var(--mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  cursor: pointer;
  border-right: 1px solid var(--line);
}
.course-toolbar .seg button:last-child { border-right: none; }
.course-toolbar .seg button.active { background: var(--accent-soft); color: var(--accent); }
.course-toolbar .stat { color: var(--text-muted); margin-left: auto; }
.course-toolbar .stat strong { color: var(--text); font-family: var(--sans); font-size: 14px; }

.course-year-block { margin-bottom: 56px; }
.course-year-head {
  display: flex; align-items: baseline; gap: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line-soft);
  margin-bottom: 4px;
}
.course-year-head .yr {
  font-family: var(--serif);
  font-size: 32px;
  font-weight: 300;
  letter-spacing: -0.02em;
}
.course-year-head .lvl {
  font-family: var(--mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
}
.course-year-head .yr-stat {
  margin-left: auto;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--text-muted);
}
.course-year-head .yr-stat strong { color: var(--accent); font-family: var(--sans); font-size: 16px; font-weight: 500; }

.course-row {
  display: grid;
  grid-template-columns: 110px 1fr 80px 60px 120px;
  gap: 16px;
  padding: 14px 0;
  border-bottom: 1px solid oklch(0.22 0.006 280);
  align-items: center;
  font-size: 14px;
  transition: background 0.15s;
}
.course-row.simple { grid-template-columns: 110px 1fr; }
.course-row:hover { background: oklch(0.20 0.006 280 / 0.3); }
.course-code { font-family: var(--mono); font-size: 12px; color: var(--text-muted); }
.course-name { color: var(--text); }
.course-mark { font-family: var(--mono); font-size: 14px; color: var(--text-dim); text-align: right; }
.course-grade {
  font-family: var(--mono); font-size: 12px;
  text-align: center;
  padding: 2px 8px;
  border-radius: 3px;
  border: 1px solid var(--line-soft);
  width: fit-content;
  margin: 0 auto;
}
.course-grade.g-A2, .course-grade.g-A3, .course-grade.g-A1 { color: var(--good); border-color: oklch(0.40 0.10 145); background: oklch(0.78 0.10 145 / 0.08); }
.course-grade.g-B { color: var(--accent); border-color: oklch(0.40 0.10 65); background: var(--accent-soft); }
.course-grade.g-C { color: var(--warn); border-color: oklch(0.40 0.10 80); background: oklch(0.78 0.13 80 / 0.08); }
.course-grade.g-D { color: var(--bad); border-color: oklch(0.40 0.10 30); background: oklch(0.70 0.13 30 / 0.08); }
.course-bar { height: 4px; background: oklch(0.22 0.006 280); border-radius: 2px; overflow: hidden; }
.course-bar-fill { height: 100%; background: var(--accent); transition: width 0.6s ease; }

/* ── SKILLS ──────────────────────────────────────────────── */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 40px 60px;
}
.skill-cluster h3 {
  font-family: var(--mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--text-muted);
  margin: 0 0 18px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line-soft);
}
.skill-cluster .chips { display: flex; flex-wrap: wrap; gap: 8px; }
.skill-cluster .chip {
  position: relative;
  font-family: var(--sans);
  font-size: 14px;
  padding: 6px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--text);
  transition: all 0.15s;
  cursor: default;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.skill-cluster .chip.has-projects { cursor: pointer; }
.skill-cluster .chip:hover,
.skill-cluster .chip.active {
  border-color: var(--accent);
  color: var(--accent);
}
.chip-count {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 18px;
  height: 18px;
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 600;
  background: var(--accent-soft);
  color: var(--accent);
  border-radius: 999px;
  padding: 0 5px;
}
.chip-pop {
  position: absolute;
  bottom: calc(100% + 10px);
  left: 50%;
  transform: translateX(-50%);
  background: var(--bg-elev);
  border: 1px solid var(--accent);
  border-radius: 8px;
  padding: 12px;
  min-width: 240px;
  z-index: 30;
  box-shadow: 0 12px 32px oklch(0 0 0 / 0.5);
  display: flex;
  flex-direction: column;
  gap: 4px;
  cursor: default;
}
.chip-pop::after {
  content: "";
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  border: 6px solid transparent;
  border-top-color: var(--accent);
}
.chip-pop-lbl {
  font-family: var(--mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  padding: 2px 6px 6px;
  border-bottom: 1px solid var(--line-soft);
  margin-bottom: 4px;
}
.chip-pop-item {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  padding: 8px 6px;
  border-radius: 4px;
  text-decoration: none;
  color: var(--text);
  transition: background 0.15s;
}
.chip-pop-item:hover { background: var(--accent-soft); color: var(--accent); }
.chip-pop-name { font-size: 13px; font-family: var(--sans); }
.chip-pop-year { font-family: var(--mono); font-size: 10px; color: var(--text-muted); text-transform: uppercase; }

/* ── TIMELINE ────────────────────────────────────────────── */
.timeline { position: relative; padding-left: 28px; }
.timeline::before {
  content: ""; position: absolute;
  left: 4px; top: 8px; bottom: 8px;
  width: 1px; background: var(--line);
}
.tl-item { position: relative; padding-bottom: 36px; }
.tl-item::before {
  content: ""; position: absolute;
  left: -28px; top: 8px;
  width: 9px; height: 9px;
  border-radius: 50%;
  background: var(--bg);
  border: 1px solid var(--accent);
}
.tl-item.work::before { background: var(--accent); }
.tl-item.award::before { background: var(--good); border-color: var(--good); }
.tl-date {
  font-family: var(--mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  margin-bottom: 6px;
}
.tl-title {
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 400;
  margin: 0 0 6px;
  letter-spacing: -0.01em;
}
.tl-body { color: var(--text-dim); font-size: 15px; max-width: 60ch; }

/* ── CV / FOOTER ─────────────────────────────────────────── */
.cv-card {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 40px;
  align-items: center;
  padding: 48px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--bg-card);
}
.cv-card h3 {
  font-family: var(--serif);
  font-weight: 300;
  font-size: 36px;
  letter-spacing: -0.02em;
  margin: 0 0 8px;
}
.cv-card h3 em { color: var(--accent); font-style: italic; }
.cv-card p { color: var(--text-dim); margin: 0; max-width: 50ch; }
.cv-btn {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 14px 22px;
  background: var(--accent);
  color: var(--bg);
  border-radius: 999px;
  font-weight: 600;
  transition: transform 0.15s, background 0.15s;
}
.cv-btn:hover { transform: translateY(-2px); background: oklch(0.85 0.13 65); }

footer {
  border-top: 1px solid var(--line-soft);
  padding: 48px 0 56px;
  margin-top: 0;
  font-family: var(--mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
}
.foot-grid {
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 24px;
}
.foot-grid a:hover { color: var(--accent); }

/* ── HIGH SCHOOL ─────────────────────────────────────────── */
.school-summary {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
  border-radius: 8px;
  overflow: hidden;
  margin-bottom: 48px;
}
.school-stat {
  background: var(--bg-card);
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.school-stat-num {
  font-family: var(--serif);
  font-size: 56px;
  line-height: 0.95;
  font-weight: 300;
  letter-spacing: -0.03em;
  color: var(--accent);
}
.school-stat-num span {
  font-size: 24px;
  color: var(--text-muted);
  letter-spacing: 0;
  margin-left: 4px;
}
.school-stat-lbl {
  font-family: var(--mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-dim);
  margin-top: 8px;
}

.school-stack {
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.school-card {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 40px;
  padding: 32px;
  border: 1px solid var(--line-soft);
  border-radius: 8px;
  background: var(--bg-card);
  align-items: start;
  transition: border-color 0.2s, transform 0.2s;
}
.school-card:hover { border-color: var(--accent); }
.school-card-head {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  height: 100%;
  min-height: 80px;
}
.school-card-yr {
  font-family: var(--serif);
  font-size: 32px;
  font-weight: 300;
  letter-spacing: -0.02em;
  color: var(--text);
}
.school-card-lvl {
  font-family: var(--mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-top: 4px;
}
.school-card-tag {
  font-family: var(--mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent);
  padding: 4px 10px;
  border: 1px solid oklch(0.40 0.10 65);
  background: var(--accent-soft);
  border-radius: 4px;
  width: fit-content;
  margin-top: 12px;
}
.school-card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 8px;
}
.school-pill {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 14px;
  border: 1px solid var(--line-soft);
  border-radius: 6px;
  background: oklch(0.20 0.006 280);
  transition: border-color 0.15s, transform 0.15s;
}
.school-pill:hover { border-color: var(--accent); transform: translateY(-1px); }
.school-pill-name {
  font-size: 14px;
  color: var(--text);
}
.school-pill-grade {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 600;
  width: 26px;
  height: 26px;
  border-radius: 4px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: oklch(0.78 0.10 145 / 0.15);
  color: var(--good);
  border: 1px solid oklch(0.40 0.10 145);
}
.school-pill.grade-B .school-pill-grade {
  background: var(--accent-soft);
  color: var(--accent);
  border-color: oklch(0.40 0.10 65);
}

@media (max-width: 900px) {
  .school-summary { grid-template-columns: repeat(2, 1fr); }
  .school-card { grid-template-columns: 1fr; gap: 20px; padding: 24px; }
}

/* ── setup ───────────────────────────────────────────────── */
.setup-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 32px;
}
.setup-cluster h3 {
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin: 0 0 14px;
}
.setup-row {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px 16px;
  background: var(--bg-card);
  border: 1px solid var(--line-soft);
  border-radius: 8px;
  margin-bottom: 8px;
}
.setup-row:last-child { margin-bottom: 0; }
.setup-item {
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
}
.setup-note {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text-muted);
  letter-spacing: 0.02em;
}

/* ── responsive ──────────────────────────────────────────── */
@media (max-width: 900px) {
  :root { --gutter: 28px; }
  .hero-grid, .section-head, .about-grid, .skills-grid { grid-template-columns: 1fr; gap: 32px; }
  .project { grid-template-columns: 40px 1fr; }
  .project-meta, .project-arrow { display: none; }
  .project.open .project-expand { grid-template-columns: 40px 1fr; }
  .project-details, .project-link { grid-column: 2 / -1; }
  .course-row { grid-template-columns: 1fr 60px; gap: 8px; }
  .course-code, .course-mark, .course-bar { display: none; }
  .cv-card { grid-template-columns: 1fr; }
}