/* =========================================================================
   Portfolio styles — sidebar app shell + Resume / Projects views.
   Palette: cool paper + deep-slate ink + a petrol accent.
   Type:    Newsreader (display) / Inter (body) / JetBrains Mono (data).
   ========================================================================= */

:root {
  --paper:       #F4F5F3;
  --surface:     #FFFFFF;
  --ink:         #16202A;
  --muted:       #566470;
  --faint:       #8A96A1;
  --line:        #E1E5E3;
  --accent:      #0B6E7C;
  --accent-ink:  #084E59;
  --accent-soft: #E1EEF1;
  --shadow: 0 1px 2px rgba(22,32,42,.04), 0 8px 24px rgba(22,32,42,.06);
  --font-display: "Newsreader", Georgia, serif;
  --font-body: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, Menlo, monospace;
  --radius: 14px;
  --side-w: 268px;
}
[data-theme="dark"] {
  --paper:#0E1417; --surface:#151D22; --ink:#E7ECEA; --muted:#9AA7AE;
  --faint:#6C7A82; --line:#26313A; --accent:#48BECB; --accent-ink:#7CD8E1;
  --accent-soft:#123033; --shadow:0 1px 2px rgba(0,0,0,.3),0 10px 30px rgba(0,0,0,.35);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0; background: var(--paper); color: var(--ink);
  font-family: var(--font-body); font-size: 16px; line-height: 1.6;
  -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility;
}
a { color: var(--accent-ink); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }

.skip-link { position: absolute; left: -999px; top: 12px; background: var(--surface);
  padding: 10px 16px; border-radius: 8px; box-shadow: var(--shadow); z-index: 20; }
.skip-link:focus { left: 16px; }

/* ---------- App shell ------------------------------------------------- */
.app { display: grid; grid-template-columns: var(--side-w) 1fr; align-items: start; }

.sidebar {
  position: sticky; top: 0; height: 100vh;
  padding: 34px 26px; border-right: 1px solid var(--line);
  display: flex; flex-direction: column; gap: 26px; background: var(--paper);
}

.side-profile { display: flex; align-items: center; gap: 13px; color: inherit; }
.side-profile:hover { text-decoration: none; }
.side-photo {
  width: 52px; height: 52px; border-radius: 50%; overflow: hidden; flex: none;
  background: var(--accent-soft); border: 1px solid var(--line);
  display: grid; place-items: center;
}
.side-photo img { width: 100%; height: 100%; object-fit: cover; display: block; }
.side-photo .initials { font-family: var(--font-display); font-size: 20px; color: var(--accent-ink); }
.side-id { display: flex; flex-direction: column; line-height: 1.25; }
.side-name { font-family: var(--font-display); font-weight: 500; font-size: 18px; }
.side-title { font-size: 12px; color: var(--muted); }

.side-nav { display: flex; flex-direction: column; gap: 2px; }
.side-nav a {
  font-size: 15px; color: var(--muted); padding: 9px 12px; border-radius: 9px;
  display: flex; align-items: center; gap: 9px; transition: background .18s, color .18s;
}
.side-nav a:hover { background: var(--accent-soft); color: var(--ink); text-decoration: none; }
.side-nav a.is-active { background: var(--accent-soft); color: var(--accent-ink); font-weight: 500; }
.side-nav a.is-active::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--accent); }

.side-links { display: flex; flex-direction: column; gap: 3px; margin-top: auto; }
.side-links a { font-family: var(--font-mono); font-size: 12.5px; color: var(--muted);
  padding: 6px 12px; border-radius: 8px; }
.side-links a:hover { color: var(--accent-ink); background: var(--accent-soft); text-decoration: none; }

.theme-toggle {
  display: inline-flex; align-items: center; gap: 8px; align-self: flex-start;
  padding: 7px 13px 7px 9px; font-family: var(--font-mono); font-size: 12px;
  color: var(--muted); background: var(--surface); border: 1px solid var(--line);
  border-radius: 999px; cursor: pointer; transition: color .2s, border-color .2s;
}
.theme-toggle:hover { color: var(--ink); border-color: var(--accent); }
.theme-toggle__dot { width: 12px; height: 12px; border-radius: 50%; background: var(--accent);
  box-shadow: inset 0 0 0 2px var(--surface), 0 0 0 1px var(--accent); }

/* ---------- View container ------------------------------------------- */
.view { padding: 64px 56px 96px; max-width: 900px; }

.reveal { opacity: 0; transform: translateY(10px); }
.reveal.is-visible { opacity: 1; transform: none; transition: opacity .5s ease, transform .5s ease; }

/* ---------- Section titles ------------------------------------------- */
.section-title {
  font-family: var(--font-display); font-weight: 500; font-size: 24px;
  letter-spacing: -.01em; margin: 0 0 20px; padding-bottom: 12px;
  border-bottom: 1px solid var(--line); position: relative;
}
.section-title::after { content: ""; position: absolute; left: 0; bottom: -1px; width: 44px; height: 2px; background: var(--accent); }
.panel { margin-bottom: 48px; }
.eyebrow { font-family: var(--font-mono); font-size: 11px; letter-spacing: .16em;
  text-transform: uppercase; color: var(--faint); margin: 0 0 10px; }

/* ---------- Resume: hero --------------------------------------------- */
.hero { display: grid; grid-template-columns: 132px 1fr; gap: 28px; align-items: center; margin-bottom: 44px; }
.hero__photo { width: 132px; height: 132px; border-radius: 50%; overflow: hidden;
  background: var(--accent-soft); border: 1px solid var(--line); display: grid; place-items: center; }
.hero__photo img { width: 100%; height: 100%; object-fit: cover; }
.hero__photo .initials { font-family: var(--font-display); font-size: 44px; color: var(--accent-ink); }
.hero__name { font-family: var(--font-display); font-weight: 500; font-size: 38px; line-height: 1.05; letter-spacing: -.015em; margin: 0 0 6px; }
.hero__title { font-weight: 600; color: var(--accent-ink); margin: 0 0 4px; }
.hero__loc { font-family: var(--font-mono); font-size: 12px; color: var(--faint); margin: 0 0 12px; }
.hero__tagline { font-size: 16px; color: var(--muted); margin: 0; max-width: 52ch; }

.summary { font-size: 16.5px; color: var(--muted); margin: 0; max-width: 64ch; }

.skills { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 8px; }
.skills li { font-size: 13px; background: var(--surface); border: 1px solid var(--line); padding: 5px 11px; border-radius: 999px; }

/* ---------- Resume: interactive timeline ----------------------------- */
.section-head { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; }
.section-head .section-title { flex: 1; }
.ghost-btn { font-family: var(--font-mono); font-size: 11.5px; color: var(--accent-ink);
  background: transparent; border: 1px solid var(--line); padding: 6px 12px; border-radius: 999px;
  cursor: pointer; transition: background .2s, border-color .2s; white-space: nowrap; }
.ghost-btn:hover { background: var(--accent-soft); border-color: var(--accent); }

.timeline { position: relative; padding-left: 30px; }
.timeline::before { content: ""; position: absolute; left: 6px; top: 6px; bottom: 6px; width: 2px; background: var(--line); }
.entry { position: relative; margin-bottom: 6px; }
.entry::before { content: ""; position: absolute; left: -30px; top: 20px; width: 14px; height: 14px;
  border-radius: 50%; background: var(--surface); border: 2px solid var(--faint);
  transition: border-color .25s, background .25s, transform .25s; z-index: 1; }
.entry.is-open::before { border-color: var(--accent); background: var(--accent); transform: scale(1.15); }
.entry__header { display: grid; grid-template-columns: 1fr auto; gap: 4px 16px; align-items: start;
  width: 100%; text-align: left; background: transparent; border: 0; padding: 14px 14px 14px 4px;
  cursor: pointer; border-radius: 10px; color: inherit; font: inherit; transition: background .2s; }
.entry__header:hover { background: var(--accent-soft); }
.entry__role { font-family: var(--font-display); font-size: 19px; font-weight: 500; line-height: 1.25; }
.entry__company { font-size: 14.5px; color: var(--muted); }
.entry__company strong { color: var(--accent-ink); font-weight: 600; }
.entry__dates { grid-row: 1 / span 2; grid-column: 2; font-family: var(--font-mono); font-size: 11.5px;
  color: var(--faint); text-align: right; white-space: nowrap; padding-top: 4px; }
.entry__chev { grid-column: 2; justify-self: end; color: var(--faint); font-size: 12px; margin-top: 2px;
  transition: transform .3s ease, color .2s; }
.entry.is-open .entry__chev { transform: rotate(180deg); color: var(--accent); }
.entry__panel { display: grid; grid-template-rows: 0fr; transition: grid-template-rows .35s ease; }
.entry.is-open .entry__panel { grid-template-rows: 1fr; }
.entry__panel > .entry__inner { overflow: hidden; }
.entry__body { padding: 2px 14px 18px 4px; }
.entry__summary { font-size: 15px; color: var(--muted); margin: 0 0 12px; }
.entry__highlights { margin: 0 0 14px; padding-left: 18px; }
.entry__highlights li { font-size: 14.5px; margin-bottom: 7px; }
.entry__highlights li::marker { color: var(--accent); }

.tags { display: flex; flex-wrap: wrap; gap: 7px; list-style: none; margin: 0; padding: 0; }
.tags li { font-family: var(--font-mono); font-size: 11px; color: var(--accent-ink);
  background: var(--accent-soft); padding: 3px 9px; border-radius: 6px; }

.education { display: grid; gap: 16px; }
.edu { display: grid; grid-template-columns: 1fr auto; gap: 4px 16px; padding: 16px 18px;
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); }
.edu__qual { font-family: var(--font-display); font-size: 17px; font-weight: 500; }
.edu__inst { font-size: 14px; color: var(--muted); }
.edu__dates { font-family: var(--font-mono); font-size: 11.5px; color: var(--faint); white-space: nowrap; }

/* ---------- Projects: list ------------------------------------------- */
.proj-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.card { display: flex; flex-direction: column; gap: 10px; padding: 22px; background: var(--surface);
  border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow);
  color: inherit; transition: transform .2s ease, border-color .2s ease; }
.card:hover { transform: translateY(-3px); border-color: var(--accent); text-decoration: none; }
.card__title { font-family: var(--font-display); font-size: 20px; font-weight: 500; line-height: 1.2; }
.card__blurb { font-size: 14.5px; color: var(--muted); flex: 1; }
.card__more { font-family: var(--font-mono); font-size: 12px; color: var(--accent-ink); }

/* ---------- Projects: detail ----------------------------------------- */
.back { font-family: var(--font-mono); font-size: 12.5px; color: var(--muted); display: inline-block; margin-bottom: 22px; }
.proj-head { margin-bottom: 26px; }
.proj-title { font-family: var(--font-display); font-weight: 500; font-size: 34px; letter-spacing: -.015em; margin: 0 0 10px; }
.proj-blurb { font-size: 17px; color: var(--muted); margin: 0 0 16px; max-width: 60ch; }

.diagram { width: 100%; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); display: block; margin: 8px 0 28px; }
.diagram-empty { display: grid; place-items: center; text-align: center; padding: 44px 20px; margin: 8px 0 28px;
  border: 1px dashed var(--line); border-radius: var(--radius); color: var(--faint);
  font-family: var(--font-mono); font-size: 12.5px; background: var(--surface); }

.video { position: relative; width: 100%; padding-bottom: 56.25%; height: 0; margin: 8px 0 28px;
  border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line); background: #000; }
.video iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.video-empty { display: grid; place-items: center; text-align: center; padding: 44px 20px; margin: 8px 0 28px;
  border: 1px dashed var(--line); border-radius: var(--radius); color: var(--faint);
  font-family: var(--font-mono); font-size: 12.5px; background: var(--surface); }

.writeup { font-size: 16px; color: var(--ink); max-width: 66ch; }
.writeup p { margin: 0 0 16px; }
.writeup h3 { font-family: var(--font-display); font-weight: 500; font-size: 20px; margin: 28px 0 10px; }

.proj-actions { display: flex; flex-wrap: wrap; gap: 12px; margin: 28px 0; }
.btn { font-family: var(--font-mono); font-size: 13px; padding: 10px 16px; border-radius: 999px;
  border: 1px solid var(--line); color: var(--ink); background: var(--surface); transition: border-color .2s, background .2s; }
.btn:hover { border-color: var(--accent); text-decoration: none; }
.btn--primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn--primary:hover { background: var(--accent-ink); border-color: var(--accent-ink); }

/* ---------- Responsive ------------------------------------------------ */
@media (max-width: 820px) {
  .app { grid-template-columns: 1fr; }
  .sidebar { position: static; height: auto; flex-direction: column; gap: 18px; border-right: 0; border-bottom: 1px solid var(--line); }
  .side-nav { flex-direction: row; flex-wrap: wrap; }
  .side-links { flex-direction: row; flex-wrap: wrap; margin-top: 0; }
  .view { padding: 40px 22px 72px; }
  .hero { grid-template-columns: 96px 1fr; gap: 18px; }
  .hero__photo { width: 96px; height: 96px; }
  .hero__name { font-size: 30px; }
  .proj-grid { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; animation: none !important; }
  .reveal { opacity: 1; transform: none; }
}
@media print {
  :root { --paper:#fff; --surface:#fff; --shadow:none; }
  .sidebar, .theme-toggle, .ghost-btn, .back, .skip-link, .entry__chev { display: none !important; }
  .app { grid-template-columns: 1fr; }
  .view { max-width: none; padding: 0; }
  .entry__panel { grid-template-rows: 1fr !important; }
  .panel, .entry, .card { break-inside: avoid; }
}