/* =========================================================
   Roger Gelonezi — portfolio
   "Architect's blueprint": dark navy drawing sheet by default,
   paper blueprint in light mode. All colors are tokens below.
   ========================================================= */

:root,
:root[data-theme="dark"] {
  --bg: #07121f;
  --bg-band: #0a1828;
  --surface: #0d1e33;
  --surface-2: #11263f;
  --line: rgba(120, 175, 255, 0.16);
  --line-strong: rgba(120, 175, 255, 0.32);
  --grid-minor: rgba(120, 175, 255, 0.045);
  --grid-major: rgba(120, 175, 255, 0.085);
  --text: #e6eef8;
  --muted: #93a8c2;
  --faint: #6c84a3;
  --accent: #5cc8ff;
  --accent-ink: #04121f;
  --accent-soft: rgba(92, 200, 255, 0.12);
  --amber: #ffb547;
  --amber-soft: rgba(255, 181, 71, 0.12);
  --ok: #3ddc97;
  --shadow: 0 1px 0 rgba(255, 255, 255, 0.03) inset, 0 12px 32px rgba(0, 0, 0, 0.35);
  color-scheme: dark;
}

:root[data-theme="light"] {
  --bg: #f4f8fc;
  --bg-band: #e9f1f9;
  --surface: #ffffff;
  --surface-2: #f2f7fc;
  --line: rgba(20, 75, 150, 0.16);
  --line-strong: rgba(20, 75, 150, 0.32);
  --grid-minor: rgba(20, 90, 180, 0.05);
  --grid-major: rgba(20, 90, 180, 0.095);
  --text: #0b1b2e;
  --muted: #45597a;
  --faint: #6a7f9c;
  --accent: #0b66c3;
  --accent-ink: #ffffff;
  --accent-soft: rgba(11, 102, 195, 0.09);
  --amber: #a85400;
  --amber-soft: rgba(168, 84, 0, 0.09);
  --ok: #0d8a55;
  --shadow: 0 1px 2px rgba(10, 40, 80, 0.06), 0 10px 28px rgba(10, 40, 80, 0.08);
  color-scheme: light;
}

:root {
  --sans: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Consolas, monospace;
  --maxw: 1160px;
  --header-h: 64px;
  --radius: 10px;
  --ease: cubic-bezier(.2, .7, .2, 1);
}

/* ---------- Base ---------- */
*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 12px);
  -webkit-text-size-adjust: 100%;
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background-color: var(--bg);
  background-image:
    linear-gradient(var(--grid-major) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-major) 1px, transparent 1px),
    linear-gradient(var(--grid-minor) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-minor) 1px, transparent 1px);
  background-size: 120px 120px, 120px 120px, 24px 24px, 24px 24px;
  background-position: -1px -1px;
  color: var(--text);
  font-family: var(--sans);
  font-size: 1.0625rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 { margin: 0; line-height: 1.15; font-weight: 600; letter-spacing: -0.015em; }
p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
img { max-width: 100%; height: auto; display: block; }
a { color: var(--accent); text-decoration: none; text-underline-offset: 3px; }
a:hover { text-decoration: underline; }
strong { font-weight: 600; color: var(--text); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }
::selection { background: var(--accent); color: var(--accent-ink); }

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 16px; }
@media (min-width: 640px) { .container { padding: 0 28px; } }

.muted { color: var(--muted); }
.mono-label {
  font-family: var(--mono); font-size: 0.75rem; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--faint);
}

.skip-link {
  position: absolute; left: 12px; top: -60px; z-index: 100;
  background: var(--accent); color: var(--accent-ink);
  padding: 10px 16px; border-radius: 8px; font-weight: 600;
}
.skip-link:focus { top: 12px; }

/* ---------- Buttons & chips ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  min-height: 46px; padding: 0 20px;
  border-radius: 8px; border: 1px solid transparent;
  font: 600 0.975rem/1 var(--sans);
  cursor: pointer; white-space: nowrap;
  transition: transform .15s var(--ease), background-color .15s, border-color .15s, box-shadow .15s;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn-primary { background: var(--accent); color: var(--accent-ink); box-shadow: 0 6px 20px var(--accent-soft); }
.btn-primary:hover { box-shadow: 0 8px 26px var(--accent-soft); }
.btn-ghost { background: transparent; color: var(--text); border-color: var(--line-strong); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }
.btn-sm { min-height: 36px; padding: 0 14px; font-size: 0.875rem; }
.btn-lg { min-height: 54px; padding: 0 26px; font-size: 1.05rem; }

.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chips li {
  font-family: var(--mono); font-size: 0.78rem; line-height: 1.4;
  padding: 3px 9px; border-radius: 4px;
  border: 1px solid var(--line); color: var(--muted); background: var(--surface);
}
.chips li.core { border-color: color-mix(in srgb, var(--accent) 45%, transparent); color: var(--accent); background: var(--accent-soft); }

.icon-btn {
  display: inline-grid; place-items: center;
  width: 38px; height: 38px; padding: 0;
  border-radius: 8px; border: 1px solid var(--line-strong);
  background: transparent; color: var(--text); cursor: pointer;
}
.icon-btn:hover { border-color: var(--accent); color: var(--accent); }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50; height: var(--header-h);
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: saturate(160%) blur(12px);
  -webkit-backdrop-filter: saturate(160%) blur(12px);
  border-bottom: 1px solid var(--line);
}
.header-inner { display: flex; align-items: center; gap: 20px; height: 100%; }

.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--text); margin-right: auto; }
.brand:hover { text-decoration: none; }
.brand-mark {
  display: grid; place-items: center; width: 34px; height: 34px;
  border: 1.5px solid var(--accent); border-radius: 6px;
  font: 600 0.85rem/1 var(--mono); color: var(--accent);
  position: relative;
}
.brand-mark::after {
  content: ""; position: absolute; inset: 3px; border: 1px dashed var(--line-strong); border-radius: 3px;
}
.brand-name { font: 500 0.95rem/1 var(--mono); letter-spacing: 0.02em; }

.nav-list { display: flex; gap: 2px; }
.nav-list a {
  display: block; padding: 8px 10px; border-radius: 6px;
  font: 500 0.8rem/1 var(--mono); letter-spacing: 0.04em; text-transform: uppercase;
  color: var(--muted);
}
.nav-list a:hover { color: var(--text); background: var(--accent-soft); text-decoration: none; }
.nav-list a.active { color: var(--accent); }

.header-actions { display: flex; align-items: center; gap: 10px; }
.nav-toggle { display: none; }

.icon-moon { display: none; }
:root[data-theme="light"] .icon-sun { display: none; }
:root[data-theme="light"] .icon-moon { display: block; }

@media (max-width: 1040px) {
  .nav-toggle { display: inline-grid; }
  .nav-list {
    display: none; position: absolute; left: 0; right: 0; top: var(--header-h);
    flex-direction: column; gap: 0; padding: 8px 16px 16px;
    background: var(--bg); border-bottom: 1px solid var(--line); box-shadow: var(--shadow);
  }
  .nav-list.open { display: flex; }
  .nav-list a { padding: 14px 8px; font-size: 0.9rem; border-bottom: 1px solid var(--line); border-radius: 0; }
}
@media (max-width: 420px) {
  .brand-name { display: none; }
}

/* ---------- Hero ---------- */
.hero { padding: 72px 0 40px; position: relative; overflow: hidden; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1fr) 340px; gap: 64px; align-items: center; }

.whoami { font: 400 0.95rem/1.4 var(--mono); color: var(--muted); margin-bottom: 18px; }
.whoami .path { color: var(--accent); }
.whoami .dollar { color: var(--faint); }
.caret {
  display: inline-block; width: 0.55em; height: 1.1em; margin-left: 4px; vertical-align: -0.2em;
  background: var(--accent); animation: blink 1.1s steps(1) infinite;
}
@keyframes blink { 50% { opacity: 0; } }

.hero h1 { font-size: clamp(2.6rem, 7vw, 4.75rem); font-weight: 700; letter-spacing: -0.035em; line-height: 1.02; }
.role { margin-top: 14px; font-size: clamp(1.1rem, 2.4vw, 1.4rem); font-weight: 500; color: var(--text); }
.role .sep { color: var(--accent); margin: 0 6px; }
.role .r { white-space: nowrap; }
@media (max-width: 520px) {
  .role .sep { display: none; }
  .role .r { display: block; }
}
.lead { margin-top: 18px; max-width: 58ch; font-size: 1.125rem; color: var(--muted); }
.lead strong { color: var(--text); }

.status {
  display: inline-flex; align-items: center; gap: 10px; margin-top: 24px;
  padding: 7px 14px; border-radius: 999px; border: 1px solid var(--line-strong);
  background: var(--surface); font-size: 0.9rem; font-weight: 500;
}
.dot {
  width: 9px; height: 9px; border-radius: 50%; background: var(--ok); flex: none;
  box-shadow: 0 0 0 0 color-mix(in srgb, var(--ok) 60%, transparent);
  animation: pulse 2.4s var(--ease) infinite;
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 color-mix(in srgb, var(--ok) 55%, transparent); }
  70%, 100% { box-shadow: 0 0 0 9px transparent; }
}

.cta-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }

/* Portrait with registration marks */
.portrait { margin: 0; justify-self: end; width: 100%; max-width: 340px; }
.portrait-frame { position: relative; padding: 14px; }
.portrait-frame img {
  width: 100%; aspect-ratio: 1; object-fit: cover;
  border: 1px solid var(--line-strong); border-radius: 4px;
  filter: saturate(0.9) contrast(1.02);
}
.portrait-frame::before, .portrait-frame::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background:
    linear-gradient(var(--accent), var(--accent)) top left / 26px 2px,
    linear-gradient(var(--accent), var(--accent)) top left / 2px 26px,
    linear-gradient(var(--accent), var(--accent)) top right / 26px 2px,
    linear-gradient(var(--accent), var(--accent)) top right / 2px 26px,
    linear-gradient(var(--accent), var(--accent)) bottom left / 26px 2px,
    linear-gradient(var(--accent), var(--accent)) bottom left / 2px 26px,
    linear-gradient(var(--accent), var(--accent)) bottom right / 26px 2px,
    linear-gradient(var(--accent), var(--accent)) bottom right / 2px 26px;
  background-repeat: no-repeat;
}
.portrait-frame::after {
  /* dimension line on the right edge */
  inset: 14px -10px 14px auto; width: 1px;
  background: repeating-linear-gradient(var(--line-strong) 0 4px, transparent 4px 8px);
}
.portrait figcaption {
  margin-top: 8px; padding-left: 14px;
  font: 400 0.75rem/1.4 var(--mono); letter-spacing: 0.06em; text-transform: uppercase; color: var(--faint);
}
.portrait .fig { color: var(--accent); margin-right: 6px; }

/* Metrics: drawn like a spec table */
.metrics {
  display: grid; grid-template-columns: repeat(4, 1fr);
  margin-top: 56px; border: 1px solid var(--line-strong); border-radius: var(--radius);
  background: color-mix(in srgb, var(--surface) 80%, transparent);
  overflow: hidden;
}
.metric { position: relative; padding: 22px 22px 20px; }
.metric + .metric { border-left: 1px solid var(--line); }
.m-id {
  position: absolute; top: 10px; right: 12px;
  font: 400 0.68rem/1 var(--mono); letter-spacing: 0.08em; color: var(--faint);
}
.m-value {
  font-size: clamp(1.7rem, 3.2vw, 2.25rem); font-weight: 700; letter-spacing: -0.03em;
  color: var(--amber); line-height: 1.1; white-space: nowrap;
}
.m-label { margin-top: 6px; font: 500 0.8rem/1.35 var(--mono); color: var(--text); text-transform: uppercase; letter-spacing: 0.03em; }
.m-note { margin-top: 10px; font-size: 0.9rem; line-height: 1.5; color: var(--muted); }

.now {
  display: flex; flex-wrap: wrap; align-items: center; gap: 10px 16px;
  margin-top: 16px; padding: 12px 16px;
  border: 1px dashed var(--line-strong); border-radius: var(--radius);
  font-size: 0.95rem; color: var(--muted);
}
.now-tag {
  display: inline-flex; align-items: center; gap: 8px;
  font: 500 0.75rem/1 var(--mono); letter-spacing: 0.08em; text-transform: uppercase; color: var(--ok);
}
.now-text { flex: 1 1 320px; }
.now-links { display: inline-flex; gap: 14px; font: 500 0.875rem/1 var(--mono); }

@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; gap: 36px; }
  .portrait { justify-self: start; max-width: 230px; order: -1; }
  .metrics { grid-template-columns: repeat(2, 1fr); }
  .metric:nth-child(3) { border-left: 0; }
  .metric:nth-child(n+3) { border-top: 1px solid var(--line); }
}
@media (max-width: 520px) {
  .hero { padding-top: 40px; }
  .portrait { max-width: 170px; }
  .metrics { grid-template-columns: 1fr; }
  .metric + .metric { border-left: 0; border-top: 1px solid var(--line); }
  .cta-row .btn { flex: 1 1 100%; }
  .status { border-radius: 12px; align-items: flex-start; }
  .status .dot { margin-top: 6px; }
}

/* ---------- Sections ---------- */
.section { padding: 96px 0; position: relative; }
.section-band {
  background: color-mix(in srgb, var(--bg-band) 92%, transparent);
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
}
@media (max-width: 720px) { .section { padding: 64px 0; } }

.sec-head { max-width: 760px; margin-bottom: 44px; }
.sec-index {
  display: inline-flex; align-items: center; gap: 10px; margin-bottom: 14px;
  font: 500 0.78rem/1 var(--mono); letter-spacing: 0.1em; text-transform: uppercase; color: var(--accent);
}
.sec-index::after { content: ""; width: 48px; height: 1px; background: var(--accent); opacity: 0.6; }
.sec-head h2, .contact h2 { font-size: clamp(1.8rem, 4.2vw, 2.75rem); letter-spacing: -0.03em; }
.sec-lead { margin-top: 14px; font-size: 1.1rem; color: var(--muted); max-width: 64ch; }

/* ---------- Intro video ---------- */
.intro-grid { display: grid; grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr); gap: 36px; align-items: start; }
.player {
  position: relative; aspect-ratio: 16 / 9; border-radius: var(--radius); overflow: hidden;
  border: 1px solid var(--line-strong); background: #000; box-shadow: var(--shadow);
}
.player iframe, .player-facade { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.player-facade { padding: 0; cursor: pointer; background: #000; }
.player-facade img { width: 100%; height: 100%; object-fit: cover; opacity: 0.88; transition: opacity .2s, transform .4s var(--ease); }
.player-facade:hover img { opacity: 1; transform: scale(1.015); }
.player-play {
  position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%);
  display: grid; place-items: center; width: 74px; height: 74px; border-radius: 50%;
  background: var(--accent); color: var(--accent-ink);
  box-shadow: 0 0 0 10px color-mix(in srgb, var(--accent) 22%, transparent);
  transition: transform .2s var(--ease);
}
.player-play svg { margin-left: 4px; }
.player-facade:hover .player-play { transform: translate(-50%, -50%) scale(1.06); }
.player-meta {
  position: absolute; right: 12px; bottom: 12px; padding: 4px 8px; border-radius: 4px;
  background: rgba(4, 12, 22, 0.78); color: #e6eef8; font: 500 0.75rem/1 var(--mono);
}

.chapters { margin-top: 10px; border-top: 1px solid var(--line); }
.chapters li { border-bottom: 1px solid var(--line); }
.chapters button {
  display: flex; gap: 14px; width: 100%; padding: 12px 4px; text-align: left;
  background: none; border: 0; color: var(--text); font: 400 0.98rem/1.45 var(--sans); cursor: pointer;
}
.chapters button:hover { color: var(--accent); }
.chapters .t { flex: none; width: 3.2em; font-family: var(--mono); font-size: 0.85rem; color: var(--accent); padding-top: 2px; }

.pull { margin: 24px 0 0; padding: 4px 0 4px 18px; border-left: 2px solid var(--amber); }
.pull p { font-size: 1.05rem; font-style: italic; color: var(--text); }

.transcript {
  margin-top: 28px; border: 1px solid var(--line); border-radius: var(--radius);
  background: var(--surface);
}
.transcript summary {
  padding: 14px 18px; cursor: pointer; font-weight: 500; list-style: none;
  display: flex; align-items: center; gap: 10px;
}
.transcript summary::-webkit-details-marker { display: none; }
.transcript summary::before {
  content: "+"; display: grid; place-items: center; width: 22px; height: 22px; flex: none;
  border: 1px solid var(--line-strong); border-radius: 4px; font-family: var(--mono); color: var(--accent);
}
.transcript[open] summary::before { content: "−"; }
.transcript-body { padding: 0 18px 18px 50px; color: var(--muted); max-width: 80ch; }
.transcript-body p + p { margin-top: 12px; }

@media (max-width: 900px) { .intro-grid { grid-template-columns: 1fr; } }
@media (max-width: 520px) { .transcript-body { padding-left: 18px; } }

/* ---------- Featured system / diagram ---------- */
.facts { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-bottom: 20px; }
.facts li {
  display: flex; flex-direction: column; gap: 4px; padding: 14px 16px;
  border: 1px solid var(--line); border-radius: 8px; background: var(--surface);
}
.f-value { font-size: 1.6rem; font-weight: 700; color: var(--amber); letter-spacing: -0.02em; line-height: 1.1; }
.f-label { font-size: 0.88rem; color: var(--muted); line-height: 1.4; }
@media (max-width: 760px) { .facts { grid-template-columns: repeat(2, 1fr); } }

.diagram {
  border: 1px solid var(--line-strong); border-radius: var(--radius);
  background: var(--bg); overflow: hidden; box-shadow: var(--shadow);
}
.diagram-toolbar {
  display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap;
  padding: 10px 16px; border-bottom: 1px solid var(--line); background: var(--surface);
}
.diagram-hint { font: 400 0.78rem/1 var(--mono); color: var(--faint); }
.hint-scroll { display: none; }
.diagram-scroll {
  overflow-x: auto; overscroll-behavior-x: contain;
  background-image:
    linear-gradient(var(--grid-major) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-major) 1px, transparent 1px);
  background-size: 40px 40px;
}
.arch { display: block; width: 100%; min-width: 880px; height: auto; padding: 8px 12px; }
@media (max-width: 920px) { .hint-scroll { display: inline; } }

.arch .boundary { fill: color-mix(in srgb, var(--accent) 4%, transparent); stroke: var(--line-strong); stroke-width: 1.5; stroke-dasharray: 6 6; }
.arch .boundary-label { font: 500 12px var(--mono); fill: var(--faint); letter-spacing: 0.06em; text-transform: uppercase; }
.arch .edge { fill: none; stroke: var(--line-strong); stroke-width: 1.6; }
.arch .edge.flow { stroke: color-mix(in srgb, var(--accent) 70%, transparent); stroke-dasharray: 6 6; animation: flow 1.2s linear infinite; }
.arch .edge.dep { stroke-dasharray: 2 5; }
.arch .arrow-head { fill: var(--accent); }
.arch .edge-label { font: 500 11px var(--mono); fill: var(--faint); }
@keyframes flow { to { stroke-dashoffset: -12; } }

.arch .node { cursor: pointer; outline: none; }
.arch .node rect { fill: var(--surface); stroke: var(--line-strong); stroke-width: 1.4; transition: fill .15s, stroke .15s; }
.arch .node rect.stack { fill: var(--surface-2); opacity: 0.85; }
.arch .node-core rect:not(.stack) { stroke: color-mix(in srgb, var(--accent) 60%, transparent); }
.arch .node-ext rect:not(.stack) { stroke-dasharray: 5 4; }
.arch .node-sup rect { fill: var(--surface-2); }
.arch .n-title { font: 600 15px var(--sans); fill: var(--text); text-anchor: middle; }
.arch .n-sub { font: 400 11.5px var(--mono); fill: var(--muted); text-anchor: middle; }
.arch .node:hover rect:not(.stack),
.arch .node:focus-visible rect:not(.stack) { stroke: var(--accent); fill: var(--accent-soft); }
.arch .node.selected rect:not(.stack) { stroke: var(--amber); stroke-width: 2; fill: var(--amber-soft); }
.arch .node:focus-visible rect:not(.stack) { stroke-width: 2.5; }

.diagram-panel {
  display: grid; grid-template-columns: 220px minmax(0, 1fr); gap: 4px 28px; align-items: start;
  padding: 18px 20px; border-top: 1px solid var(--line); background: var(--surface);
}
.panel-kicker { grid-column: 1; }
.panel-title { grid-column: 1; font-size: 1.1rem; color: var(--amber); }
.panel-body { grid-column: 2; grid-row: 1 / span 2; color: var(--muted); }
.panel-tags { grid-column: 2; margin-top: 8px; }
@media (max-width: 720px) {
  .diagram-panel { grid-template-columns: 1fr; }
  .panel-body, .panel-tags { grid-column: 1; grid-row: auto; }
  .panel-body { margin-top: 6px; }
}

.diagram-foot { margin-top: 14px; font-size: 0.9rem; color: var(--faint); display: flex; flex-wrap: wrap; gap: 6px 18px; }
.diagram-foot a { font-family: var(--mono); font-size: 0.85rem; }

/* ---------- Experience timeline ---------- */
.timeline { position: relative; }
.org { display: grid; grid-template-columns: 240px minmax(0, 1fr); gap: 36px; padding: 32px 0; border-top: 1px solid var(--line); }
.org:last-child { border-bottom: 1px solid var(--line); }
.org-head { position: relative; }
.org-head h3 { font-size: 1.35rem; }
.org-meta { margin-top: 6px; font: 400 0.82rem/1.5 var(--mono); color: var(--faint); }

.roles { position: relative; display: grid; gap: 28px; }
.roles::before {
  content: ""; position: absolute; left: -19px; top: 8px; bottom: 8px; width: 1px;
  background: repeating-linear-gradient(var(--line-strong) 0 4px, transparent 4px 8px);
}
.role-item { position: relative; }
.role-item::before {
  content: ""; position: absolute; left: -24px; top: 8px; width: 11px; height: 11px;
  border: 2px solid var(--accent); background: var(--bg); transform: rotate(45deg);
}
.role-head { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 4px 16px; }
.role-head h4 { font-size: 1.1rem; }
.role-meta { display: flex; gap: 14px; font: 400 0.82rem/1.5 var(--mono); color: var(--faint); }
.points { margin: 12px 0 14px; display: grid; gap: 8px; }
.points li { position: relative; padding-left: 20px; color: var(--muted); }
.points li::before { content: "→"; position: absolute; left: 0; color: var(--accent); font-family: var(--mono); font-size: 0.85rem; top: 2px; }
.points strong { color: var(--text); background: linear-gradient(transparent 62%, var(--amber-soft) 62%); }

.earlier { display: grid; gap: 10px; color: var(--muted); }
.earlier li { padding-left: 20px; position: relative; }
.earlier li::before { content: "·"; position: absolute; left: 6px; color: var(--accent); }

@media (max-width: 820px) {
  .org { grid-template-columns: 1fr; gap: 18px; }
  .roles { padding-left: 24px; }
  .roles::before { left: 5px; }
  .role-item::before { left: -24px; }
  .earlier { padding-left: 0; }
}

/* ---------- Principles ---------- */
.principles { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.principle {
  position: relative; padding: 24px 22px; border: 1px solid var(--line); border-radius: var(--radius);
  background: var(--surface);
}
.principle::before {
  content: ""; position: absolute; left: -1px; top: 22px; width: 3px; height: 26px; background: var(--accent);
}
.p-id { font: 500 0.72rem/1 var(--mono); letter-spacing: 0.1em; color: var(--faint); }
.principle h3 { margin-top: 12px; font-size: 1.15rem; }
.principle p { margin-top: 10px; color: var(--muted); font-size: 0.96rem; }
@media (max-width: 1000px) { .principles { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .principles { grid-template-columns: 1fr; } }

/* ---------- Project cards ---------- */
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(330px, 1fr)); gap: 18px; }
@media (max-width: 400px) { .cards { grid-template-columns: 1fr; } }
.card {
  display: flex; flex-direction: column; gap: 12px; padding: 24px;
  border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface);
  transition: border-color .2s, transform .2s var(--ease), box-shadow .2s;
}
.card:hover { border-color: var(--line-strong); transform: translateY(-2px); box-shadow: var(--shadow); }
.card-tag { font: 500 0.74rem/1.3 var(--mono); letter-spacing: 0.06em; text-transform: uppercase; color: var(--faint); }
.tag-live { color: var(--ok); }
.card h3 { font-size: 1.3rem; }
.card > p:not(.card-tag):not(.card-links):not(.callout) { color: var(--muted); font-size: 0.97rem; }
.callout {
  padding: 10px 12px; border-radius: 6px; background: var(--amber-soft);
  border: 1px solid color-mix(in srgb, var(--amber) 30%, transparent);
  font-size: 0.92rem; color: var(--text);
}
.callout strong { color: var(--amber); }
.spec { margin: 2px 0 0; display: grid; gap: 0; border-top: 1px dashed var(--line-strong); }
.spec div { display: grid; grid-template-columns: 96px minmax(0, 1fr); gap: 12px; padding: 8px 0; border-bottom: 1px dashed var(--line); }
.spec dt { font: 500 0.72rem/1.6 var(--mono); letter-spacing: 0.06em; text-transform: uppercase; color: var(--faint); }
.spec dd { margin: 0; font-size: 0.9rem; color: var(--text); }
.card-links { margin-top: auto; padding-top: 6px; display: flex; flex-wrap: wrap; gap: 8px 18px; font: 500 0.88rem/1.4 var(--mono); }
.card-links .muted { font-size: 0.8rem; }

/* ---------- Stack / bill of materials ---------- */
.bom { margin: 0; border: 1px solid var(--line-strong); border-radius: var(--radius); overflow: hidden; background: var(--surface); }
.bom-row { display: grid; grid-template-columns: 210px minmax(0, 1fr); }
.bom-row + .bom-row { border-top: 1px solid var(--line); }
.bom dt {
  padding: 16px 18px; border-right: 1px solid var(--line); background: var(--surface-2);
  font: 500 0.78rem/1.5 var(--mono); letter-spacing: 0.06em; text-transform: uppercase; color: var(--muted);
}
.bom dd { margin: 0; padding: 14px 18px; }
.core-key { color: var(--accent); font-family: var(--mono); font-size: 0.95em; }
@media (max-width: 640px) {
  .bom-row { grid-template-columns: 1fr; }
  .bom dt { border-right: 0; border-bottom: 1px solid var(--line); padding: 10px 16px; }
  .bom dd { padding: 12px 16px 16px; }
}

/* ---------- Writing ---------- */
.posts { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.post a {
  display: flex; flex-direction: column; gap: 10px; height: 100%; padding: 24px;
  border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); color: var(--text);
  transition: border-color .2s, transform .2s var(--ease), box-shadow .2s;
}
.post a:hover { text-decoration: none; border-color: var(--accent); transform: translateY(-2px); box-shadow: var(--shadow); }
.post-meta { font: 400 0.78rem/1.4 var(--mono); color: var(--faint); text-transform: uppercase; letter-spacing: 0.06em; }
.post h3 { font-size: 1.2rem; line-height: 1.3; }
.post a:hover h3 { color: var(--accent); }
.post p:not(.post-meta) { color: var(--muted); font-size: 0.96rem; }
.post .chips { margin-top: auto; padding-top: 4px; }
.more { margin-top: 22px; font: 500 0.9rem/1 var(--mono); }
@media (max-width: 760px) { .posts { grid-template-columns: 1fr; } }

/* ---------- Education ---------- */
.edu-grid { display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr); gap: 24px; align-items: start; }
.edu-feature {
  padding: 28px; border: 1px solid var(--line-strong); border-radius: var(--radius); background: var(--surface);
  display: flex; flex-direction: column; gap: 10px;
}
.edu-feature h3 { font-size: 1.6rem; }
.edu-school { font: 400 0.85rem/1.5 var(--mono); color: var(--faint); }
.edu-score { display: flex; align-items: baseline; flex-wrap: wrap; gap: 6px 14px; margin: 10px 0 8px; }
.score { font-size: 2.6rem; font-weight: 700; letter-spacing: -0.03em; color: var(--amber); line-height: 1; }
.score small { font-size: 1rem; color: var(--muted); font-weight: 500; margin-left: 2px; }
.score-label { color: var(--muted); }
.top-key { color: var(--accent); }
.edu-list { display: grid; gap: 12px; }
.edu-list li { padding: 18px 20px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
.edu-degree { font-weight: 600; }
.edu-list .edu-school { margin-top: 4px; }
.langs { margin-top: 12px; padding: 18px 20px; border: 1px dashed var(--line-strong); border-radius: var(--radius); }
.langs ul { margin-top: 10px; display: grid; gap: 6px; }
.langs li { display: flex; justify-content: space-between; gap: 12px; }
@media (max-width: 860px) { .edu-grid { grid-template-columns: 1fr; } }
@media (max-width: 520px) { .edu-feature { padding: 22px 18px; } }

/* ---------- Contact ---------- */
.contact-box {
  position: relative; padding: 56px 48px; text-align: center;
  border: 1px solid var(--line-strong); border-radius: 14px;
  background:
    radial-gradient(600px 240px at 50% 0%, var(--accent-soft), transparent 70%),
    var(--surface);
  box-shadow: var(--shadow);
}
.contact-box .sec-index { justify-content: center; }
.contact-box .sec-index::before { content: ""; width: 48px; height: 1px; background: var(--accent); opacity: 0.6; }
.contact-box .sec-lead { margin: 16px auto 0; }
.contact-box .cta-row { justify-content: center; }
.social { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px 26px; margin-top: 26px; }
.social a { display: inline-flex; align-items: center; gap: 8px; color: var(--muted); font: 400 0.88rem/1 var(--mono); }
.social a:hover { color: var(--accent); text-decoration: none; }
@media (max-width: 600px) { .contact-box { padding: 40px 20px; } }

/* ---------- Footer ---------- */
.site-footer { padding: 28px 0 36px; border-top: 1px solid var(--line); font-size: 0.88rem; }
.footer-inner { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px 24px; }

/* ---------- Reveal on scroll (only when JS is running) ---------- */
.js .reveal { opacity: 0; transform: translateY(14px); transition: opacity .6s var(--ease), transform .6s var(--ease); }
.js .reveal.in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .js .reveal { opacity: 1; transform: none; }
}

/* ---------- Print: a clean one-pager for recruiters ---------- */
@media print {
  :root { --bg: #fff; --surface: #fff; --surface-2: #fff; --text: #000; --muted: #333; --faint: #555; --accent: #0b66c3; --amber: #a85400; --line: #ccc; --line-strong: #999; }
  body { background: #fff; font-size: 11pt; }
  .site-header, .skip-link, .cta-row, .now, .portrait, #intro, .diagram, .diagram-foot, .theme-toggle, .contact .social, .caret { display: none !important; }
  .section, .hero { padding: 18px 0; }
  .section-band { background: none; border: 0; }
  .js .reveal { opacity: 1; transform: none; }
  .card, .principle, .post a, .metric, .bom, .edu-feature, .edu-list li { break-inside: avoid; box-shadow: none; }
  a { color: #000; }
}