/* Layout: a lab notebook. White page, figures with captions, one dark listening room. */
:root {
  --paper: #ffffff;
  --ink: #16202a;
  --ink-2: #3d4852;
  --muted: #5b6670;
  --rule: #e3e6ea;
  --cobalt: #1f55b8;
  --cobalt-soft: #e8eef9;
  --room: #0f1319;
  --room-ink: #e4e8ee;
  --room-muted: #8d97a6;
  --room-rule: #222a35;
  --ember: #f2a65a;
  --magenta: #b7377a;

  --display: "Spectral", Georgia, "Times New Roman", serif;
  --body: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, monospace;

  --gutter: clamp(20px, 4vw, 40px);
  --max: 1160px;
  color-scheme: light;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
section[id] { scroll-margin-top: 60px; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 400 1rem/1.65 var(--body);
}
a { color: inherit; }
img, canvas { display: block; max-width: 100%; }
:focus-visible { outline: 2px solid var(--cobalt); outline-offset: 3px; }
::selection { background: var(--cobalt-soft); }

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

/* ---------- type ---------- */
h1, h2, h3 { font-family: var(--display); font-weight: 400; margin: 0; text-wrap: balance; }
h1 { font-size: clamp(2.1rem, 4.6vw, 3.5rem); line-height: 1.08; letter-spacing: -.01em; }
h1 em { font-style: italic; color: var(--cobalt); }
h2 { font-size: clamp(1.7rem, 3vw, 2.3rem); line-height: 1.15; }
h3 { font-size: 1.35rem; font-weight: 600; line-height: 1.25; }
p { margin: 0; }
.label {
  font: 500 .72rem/1.4 var(--mono);
  letter-spacing: .07em;
  text-transform: uppercase;
  color: var(--muted);
}
.caption { font: 400 .75rem/1.55 var(--mono); color: var(--muted); }
.num { font-family: var(--mono); font-variant-numeric: tabular-nums; }

/* ---------- nav ---------- */
.nav {
  position: sticky; top: env(safe-area-inset-top, 0px); z-index: 10;
  background: rgba(255,255,255,.94);
  backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--rule);
}
.nav .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 60px; }
.nav .name { font-weight: 600; text-decoration: none; white-space: nowrap; }
.nav ul { list-style: none; margin: 0; padding: 0; display: flex; gap: 22px; font-size: .88rem; }
.nav ul a { text-decoration: none; color: var(--muted); }
.nav ul a:hover { color: var(--ink); }
.nav .lang { font: 500 .75rem var(--mono); text-decoration: none; border: 1px solid var(--ink); border-radius: 3px; padding: 3px 8px; }

/* ---------- buttons ---------- */
.btns { display: flex; flex-wrap: wrap; gap: 10px; }
.btn {
  font: 500 .88rem/1 var(--body);
  padding: 12px 18px; border-radius: 4px;
  border: 1px solid var(--ink); text-decoration: none; color: var(--ink);
  transition: background .2s, color .2s;
}
.btn:hover { background: var(--ink); color: var(--paper); }
.btn.primary { background: var(--ink); color: var(--paper); }
.btn.primary:hover { background: var(--cobalt); border-color: var(--cobalt); }

/* ---------- hero ---------- */
.hero { padding-block: clamp(48px, 8vw, 96px) clamp(40px, 6vw, 72px); }
.hero .wrap { display: grid; grid-template-columns: 1.1fr 1fr; gap: clamp(32px, 5vw, 64px); align-items: center; }
.hero .wrap > * { min-width: 0; }
.hero .lede { color: var(--ink-2); font-size: 1.06rem; max-width: 48ch; margin-block: 22px 14px; }
.hero .open { color: var(--muted); font-size: .92rem; max-width: 48ch; margin-bottom: 26px; }
figure { margin: 0; display: flex; flex-direction: column; gap: 10px; }

/* ---------- sections ---------- */
.section { padding-block: clamp(56px, 8vw, 96px); border-top: 1px solid var(--rule); }
.section-head { display: flex; flex-direction: column; gap: 10px; margin-bottom: clamp(28px, 4vw, 44px); }
.section-head p { color: var(--ink-2); max-width: 62ch; }

/* ---------- projects ---------- */
.project {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr) 180px;
  gap: clamp(20px, 3vw, 40px);
  padding-block: 34px;
  border-top: 1px solid var(--rule);
}
.project > * { min-width: 0; }
.project .body { display: flex; flex-direction: column; gap: 10px; }
.project .body p { color: var(--ink-2); font-size: .95rem; max-width: 64ch; }
.project .tools { font: 400 .78rem var(--mono); color: var(--muted); }
.project .links { display: flex; flex-wrap: wrap; gap: 16px; font-size: .9rem; }
.project .links a { color: var(--cobalt); text-decoration: none; border-bottom: 1px solid currentColor; }
.project .links a:hover { color: var(--ink); }
.metric { display: flex; flex-direction: column; gap: 4px; }
.metric .value { font: 500 2rem/1 var(--mono); color: var(--cobalt); font-variant-numeric: tabular-nums; }
.metric .what { font-size: .82rem; color: var(--muted); line-height: 1.45; }
.metric .value.pending { font-size: 1.1rem; color: var(--muted); }
.fig canvas { width: 100%; height: 200px; }
.fig .pending-box {
  height: 96px; border: 1px dashed var(--rule); border-radius: 4px;
  display: grid; place-items: center; color: var(--muted); font: 400 .78rem var(--mono);
}
.palos { display: flex; flex-wrap: wrap; gap: 6px; }
.palos button {
  font: 500 .74rem var(--mono); padding: 5px 9px; border-radius: 3px; cursor: pointer;
  border: 1px solid var(--rule); background: var(--paper); color: var(--ink-2);
}
.palos button[aria-pressed="true"] { background: var(--ink); border-color: var(--ink); color: var(--paper); }

/* ---------- method ---------- */
.steps { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--rule); }
.steps li { padding: 24px 24px 8px 0; display: flex; flex-direction: column; gap: 8px; min-width: 0; }
.steps li + li { padding-left: 24px; border-left: 1px solid var(--rule); }
.steps .n { font: 500 .78rem var(--mono); color: var(--cobalt); }
.steps h3 { font-size: 1.15rem; }
.steps p { color: var(--ink-2); font-size: .9rem; }

/* ---------- listening room ---------- */
.room { background: var(--room); color: var(--room-ink); padding-block: clamp(56px, 8vw, 96px); }
.room .wrap { display: flex; flex-direction: column; gap: 22px; }
.room .label, .room .caption { color: var(--room-muted); }
.room p { color: #a9b3c1; max-width: 62ch; }
.scope { position: relative; border: 1px solid var(--room-rule); border-radius: 4px; overflow: hidden; background: var(--room); }
.scope canvas { width: 100%; height: 190px; }
.scope .tag {
  position: absolute; font: 400 .68rem var(--mono); color: #cfd6e0;
  background: rgba(15,19,25,.72); padding: 2px 6px; border-radius: 3px;
}
.keys { position: relative; display: flex; height: 140px; max-width: 680px; user-select: none; -webkit-user-select: none; touch-action: manipulation; }
.kw, .kb { cursor: pointer; display: flex; align-items: flex-end; justify-content: center; font: 500 .68rem var(--mono); }
.kw { flex: 1; background: #eef1f5; color: var(--muted); border: 1px solid var(--room); border-radius: 0 0 5px 5px; padding-bottom: 8px; }
.kb { position: absolute; top: 0; height: 60%; width: 7.2%; z-index: 2; background: #1c222b; color: var(--room-muted); border: 1px solid #000; border-radius: 0 0 4px 4px; padding-bottom: 5px; }
.kw.down { background: var(--ember); color: var(--room); }
.kb.down { background: var(--magenta); color: var(--room-ink); }
.kw:focus-visible, .kb:focus-visible { outline: 2px solid var(--ember); outline-offset: -4px; }

/* ---------- background ---------- */
.background .wrap { display: grid; grid-template-columns: 1fr 1.3fr; gap: clamp(32px, 5vw, 72px); }
.background .wrap > * { min-width: 0; display: flex; flex-direction: column; gap: 14px; }
.background p { color: var(--ink-2); max-width: 52ch; }
.edu { list-style: none; margin: 0; padding: 0; }
.edu li { display: grid; grid-template-columns: 96px minmax(0, 1fr) auto; gap: 16px; padding-block: 12px; border-top: 1px solid var(--rule); font-size: .92rem; align-items: baseline; }
.edu li:last-child { border-bottom: 1px solid var(--rule); }
.edu .y, .edu .g { font: 400 .78rem var(--mono); color: var(--muted); font-variant-numeric: tabular-nums; white-space: nowrap; }
.edu .where { display: block; color: var(--muted); font-size: .84rem; }

/* ---------- contact ---------- */
.contact .wrap { display: flex; flex-direction: column; gap: 18px; }
.contact .mail { font: 400 clamp(1.2rem, 3vw, 1.8rem) var(--display); color: var(--cobalt); text-decoration: none; border-bottom: 1px solid currentColor; align-self: flex-start; word-break: break-all; }
.contact .links { display: flex; gap: 22px; flex-wrap: wrap; font-size: .95rem; }
footer { border-top: 1px solid var(--rule); padding-block: 22px; }
footer .wrap { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; }

/* ---------- responsive ---------- */
@media (max-width: 960px) {
  .project { grid-template-columns: 220px minmax(0, 1fr); }
  .project .metric { grid-column: 2; }
  .steps { grid-template-columns: 1fr 1fr; }
  .steps li:nth-child(3) { padding-left: 0; border-left: 0; }
  .steps li:nth-child(n+3) { border-top: 1px solid var(--rule); }
}
@media (max-width: 720px) {
  .nav ul { display: none; }
  .hero .wrap, .background .wrap { grid-template-columns: 1fr; }
  .project { grid-template-columns: 1fr; }
  .project .metric { grid-column: auto; order: -1; flex-direction: row; align-items: baseline; gap: 10px; }
  .project .fig { order: 2; }
  .project .fig-pending { display: none; }
  .steps { grid-template-columns: 1fr; }
  .steps li, .steps li + li { padding-left: 0; border-left: 0; }
  .steps li + li { border-top: 1px solid var(--rule); }
  .keys { height: 120px; }
  .edu li { grid-template-columns: minmax(0, 1fr) auto; }
  .edu .y { grid-column: 1 / -1; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}