/* hactar.com — site styles
   Light/dark: follows the OS by default; a saved choice sets <html data-theme="light|dark">. */

:root {
  --bg: #FBFBF9;
  --band: #F4F4F1;
  --surface: #FFFFFF;
  --text: #16181D;
  --muted: #575C66;
  --line: #E3E3DE;
  --accent: #1F5FBF;
  --accent-hover: #123F85;

  --sans: 'IBM Plex Sans', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --mono: 'IBM Plex Mono', ui-monospace, 'SFMono-Regular', Menlo, monospace;
  --serif: 'IBM Plex Serif', Georgia, serif;
  --max: 1120px;
  color-scheme: light;
}

:root[data-theme="dark"] {
  --bg: #0F1115;
  --band: #13161B;
  --surface: #181B22;
  --text: #E8E9EC;
  --muted: #A0A6B1;
  --line: #2A2F38;
  --accent: #8AB0F7;
  --accent-hover: #B9D0FB;
  color-scheme: dark;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0F1115;
    --band: #13161B;
    --surface: #181B22;
    --text: #E8E9EC;
    --muted: #A0A6B1;
    --line: #2A2F38;
    --accent: #8AB0F7;
    --accent-hover: #B9D0FB;
    color-scheme: dark;
  }
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); }
a:hover { color: var(--accent-hover); }
img { max-width: 100%; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 6px; }

.skip { position: absolute; left: -9999px; }
.skip:focus { left: 16px; top: 16px; background: var(--surface); padding: 8px 12px; z-index: 10; }

.wrap { max-width: var(--max); margin: 0 auto; padding-inline: 24px; }
.eyebrow { margin: 0; font-family: var(--mono); font-size: 14px; color: var(--accent); letter-spacing: 0.02em; }
.label { margin: 0; font-family: var(--mono); font-size: 13px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.08em; }
.muted { color: var(--muted); }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  min-height: 48px; padding: 0 22px; border-radius: 10px;
  border: 1px solid var(--line); background: transparent;
  color: var(--text); text-decoration: none; font-weight: 500; font-size: 16px;
}
.btn:hover { color: var(--text); border-color: var(--muted); }
.btn--solid { background: var(--text); color: var(--bg); border-color: var(--text); }
.btn--solid:hover { color: var(--bg); opacity: 0.9; }
.btn--surface { background: var(--surface); }
.btn svg { width: 18px; height: 18px; flex: none; }

/* Header */
.site-header { border-bottom: 1px solid var(--line); }
.nav { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 16px; padding-block: 20px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--text); font-weight: 600; font-size: 18px; letter-spacing: -0.01em; }
.brand:hover { color: var(--text); }
.brand__mark { display: block; width: 32px; height: 32px; flex: none; }
.nav__links { display: flex; flex-wrap: wrap; align-items: center; gap: 4px; }
.nav__links a { padding: 10px 14px; text-decoration: none; color: var(--muted); font-size: 15px; font-weight: 500; }
.nav__links a:hover { color: var(--text); }
.theme-toggle {
  margin-left: 8px; width: 44px; height: 44px;
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: 10px; border: 1px solid var(--line); background: var(--surface); color: var(--text); cursor: pointer;
}
.theme-toggle svg { width: 18px; height: 18px; }
.theme-toggle .icon-sun { display: none; }
:root[data-theme="dark"] .theme-toggle .icon-sun { display: block; }
:root[data-theme="dark"] .theme-toggle .icon-moon { display: none; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .theme-toggle .icon-sun { display: block; }
  :root:not([data-theme="light"]) .theme-toggle .icon-moon { display: none; }
}

/* Hero */
.hero { display: flex; flex-wrap: wrap; align-items: center; gap: 56px; padding-block: 96px 88px; }
.hero__text { flex: 999 1 560px; min-width: 0; display: flex; flex-direction: column; gap: 24px; }
.hero h1 { margin: 0; font-size: 38px; line-height: 1.2; font-weight: 500; letter-spacing: -0.015em; max-width: 680px; }
.hero__lede { margin: 0; font-size: 18px; line-height: 1.65; color: var(--muted); max-width: 620px; }
.hero__actions { display: flex; flex-wrap: wrap; gap: 12px; padding-top: 8px; }
.hero__photo { flex: 1 1 280px; display: flex; justify-content: center; }
.hero__photo img { width: 320px; height: 320px; border-radius: 20px; object-fit: cover; object-position: center 35%; border: 1px solid var(--line); display: block; }

/* Sections */
.section { border-top: 1px solid var(--line); }
.section--band { background: var(--band); }
.section__inner { display: flex; flex-direction: column; gap: 48px; padding-block: 96px; }
.section__head { display: flex; flex-direction: column; gap: 12px; }
.section__head--row { flex-direction: row; flex-wrap: wrap; align-items: flex-end; justify-content: space-between; gap: 16px; }
.section h2 { margin: 0; font-size: 40px; line-height: 1.15; font-weight: 600; letter-spacing: -0.02em; }

/* About */
.about { display: flex; flex-wrap: wrap; gap: 56px; align-items: flex-start; }
.about__body { flex: 999 1 520px; min-width: 0; display: flex; flex-direction: column; gap: 20px; color: var(--muted); font-size: 18px; line-height: 1.7; }
.about__body p { margin: 0; }
.about__body .lead { color: var(--text); font-size: 20px; }
.glance { flex: 1 1 320px; min-width: 0; border: 1px solid var(--line); border-radius: 16px; background: var(--surface); padding: 28px; display: flex; flex-direction: column; gap: 24px; }
.glance dl { margin: 0; display: grid; grid-template-columns: 96px minmax(0, 1fr); row-gap: 14px; column-gap: 16px; font-size: 15px; line-height: 1.5; }
.glance dt { color: var(--muted); }
.glance dd { margin: 0; }
.glance__edu { border-top: 1px solid var(--line); padding-top: 22px; display: flex; flex-direction: column; gap: 14px; }
.glance__row { display: flex; gap: 16px; font-size: 15px; }
.glance__year { font-family: var(--mono); color: var(--accent); width: 48px; flex: none; }
.glance .btn { justify-content: center; min-height: 44px; font-size: 15px; background: var(--bg); }
.glance .btn svg { width: 16px; height: 16px; }

/* Experience */
.experience { display: flex; flex-direction: column; gap: 24px; padding-top: 8px; }
.experience__head { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 12px; }
.experience h3 { margin: 0; font-size: 24px; font-weight: 600; letter-spacing: -0.01em; }
.experience__meta { font-family: var(--mono); font-size: 13px; color: var(--muted); }
.roles { margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--line); }
.roles li { display: flex; flex-wrap: wrap; gap: 8px 32px; padding: 20px 0; border-bottom: 1px solid var(--line); }
.roles__dates { flex: 0 0 200px; font-family: var(--mono); font-size: 14px; color: var(--muted); padding-top: 2px; }
.roles li:first-child .roles__dates { color: var(--accent); }
.roles__body { flex: 1 1 360px; min-width: 0; }
.roles__title { font-weight: 600; font-size: 17px; }
.roles__note { color: var(--muted); font-size: 15px; }

/* Project cards — each keeps its own project-page identity in both site themes */
.project {
  --p-bg: #141210; --p-deep: #0C0B09; --p-tile: #1A1714; --p-chip: #221E1A;
  --p-text: #EDE6DC; --p-muted: #A89F93; --p-body: #B9B0A3;
  --p-line: #2E2924; --p-line2: #3A332C; --p-accent: #E9A23B;
  border-radius: 20px; background: var(--p-bg); color: var(--p-text);
  padding: 40px; display: flex; flex-wrap: wrap; gap: 40px; align-items: stretch;
  border: 1px solid var(--p-line); overflow: hidden;
}
.project--knapper {
  --p-bg: #0E0C14; --p-deep: #08070D; --p-tile: #15121F; --p-chip: #19162A;
  --p-text: #E9E6F2; --p-muted: #A6A1B8; --p-body: #B8B3C9;
  --p-line: #2A2635; --p-line2: #332E47; --p-accent: #A78BFA;
}
.project__main { flex: 999 1 440px; min-width: 0; display: flex; flex-direction: column; gap: 20px; }
.project__top { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.project__id { display: flex; align-items: center; gap: 14px; }
.project__logo { position: relative; width: 52px; height: 52px; border-radius: 12px; background: var(--p-chip); border: 1px solid var(--p-line2); display: inline-flex; align-items: center; justify-content: center; flex: none; }
.project__logo--mv { align-items: flex-end; padding-bottom: 9px; font-family: var(--serif); font-style: italic; font-size: 22px; line-height: 1; color: var(--p-text); }
.project__logo--mv svg { position: absolute; top: 9px; left: 50%; margin-left: -13px; }
.project h3 { margin: 0; font-size: 28px; font-weight: 600; letter-spacing: -0.015em; line-height: 1.1; }
.project__sub { display: block; font-family: var(--mono); font-size: 12px; color: var(--p-muted); padding-top: 4px; }
.project__num { font-family: var(--mono); font-size: 12px; color: var(--p-muted); letter-spacing: 0.08em; }
.project__headline { margin: 0; font-size: 30px; line-height: 1.2; font-weight: 600; letter-spacing: -0.015em; }
.project__headline em { font-family: var(--serif); font-weight: 500; color: var(--p-accent); }
.project__body { margin: 0; color: var(--p-body); }
.project__list { margin: 0; padding: 0; list-style: none; display: flex; flex-direction: column; gap: 10px; font-size: 16px; }
.project__list li { display: flex; gap: 12px; }
.project__list li::before { content: "→"; color: var(--p-accent); font-family: var(--mono); }
.tags { display: flex; flex-wrap: wrap; gap: 8px; }
.tags span { font-family: var(--mono); font-size: 13px; padding: 4px 10px; border-radius: 999px; border: 1px solid var(--p-line2); color: var(--p-body); }
.project__links { display: flex; flex-wrap: wrap; gap: 12px; padding-top: 6px; }
.project__links a { display: inline-flex; align-items: center; min-height: 44px; padding: 0 18px; border-radius: 10px; border: 1px solid var(--p-line2); color: var(--p-text); text-decoration: none; font-size: 16px; font-weight: 500; }
.project__links a.primary { background: var(--p-accent); border-color: var(--p-accent); color: var(--p-bg); }
.project__links a:hover { filter: brightness(1.1); }

.define { padding: 16px 18px; border-radius: 12px; background: var(--p-tile); border: 1px solid var(--p-line); display: flex; flex-direction: column; gap: 4px; font-family: var(--serif); }
.define__word { font-size: 20px; font-weight: 600; }
.define__pos { font-style: italic; font-size: 15px; color: var(--p-muted); margin-left: 10px; }
.define__def { font-size: 16px; color: #CFCADC; }

.sample { flex: 1 1 380px; min-width: 0; margin: 0; border-radius: 14px; background: var(--p-deep); border: 1px solid var(--p-line); overflow: hidden; display: flex; flex-direction: column; font-family: var(--mono); }
.sample__bar { display: flex; align-items: center; justify-content: space-between; padding: 12px 16px; border-bottom: 1px solid var(--p-line); font-size: 12px; color: var(--p-muted); }
.sample__tag { border: 1px solid var(--p-line2); border-radius: 999px; padding: 1px 8px; }
.sample__body { padding: 20px 16px; display: flex; flex-direction: column; gap: 14px; font-size: 13px; line-height: 1.55; }
.sample__prompt { color: var(--p-accent); }
.hit { display: grid; grid-template-columns: minmax(0, 1fr) 48px; gap: 12px; padding: 12px; border-radius: 10px; background: var(--p-tile); border: 1px solid var(--p-line); }
.hit__meta { color: var(--p-muted); }
.hit__score { text-align: right; color: var(--p-accent); }
.hit mark { background: #4A3416; color: #F6D29A; padding: 0 2px; border-radius: 3px; }
.sample pre { margin: 0; padding: 20px 16px; font-family: var(--mono); font-size: 13px; line-height: 1.7; color: var(--p-text); white-space: pre-wrap; overflow-wrap: anywhere; }
.sample .dim { color: var(--p-muted); }
.sample .ok { color: #7FD6A4; }
.sample .bad { color: #F28B8B; }
.sample .warn { color: #E6C27A; }
.sample .acc { color: var(--p-accent); }

/* Earlier work */
.earlier { display: flex; flex-direction: column; gap: 20px; padding-top: 16px; }
.earlier h3 { margin: 0; font-size: 15px; font-family: var(--mono); font-weight: 500; color: var(--muted); text-transform: uppercase; letter-spacing: 0.08em; }
.earlier__grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 20px; }
.card { border: 1px solid var(--line); border-radius: 16px; background: var(--surface); padding: 28px; display: flex; flex-direction: column; gap: 12px; }
.card__head { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; }
.card h4 { margin: 0; font-size: 20px; font-weight: 600; }
.card__kind { font-family: var(--mono); font-size: 13px; color: var(--muted); }
.card p { margin: 0; color: var(--muted); font-size: 16px; }
.card a { font-size: 15px; font-weight: 500; padding-top: 4px; }

/* Contact */
.contact { display: flex; flex-wrap: wrap; gap: 40px; align-items: flex-end; justify-content: space-between; padding-block: 96px; }
.contact__text { flex: 999 1 480px; min-width: 0; display: flex; flex-direction: column; gap: 14px; }
.contact__text p.muted { margin: 0; font-size: 18px; max-width: 520px; }
.contact__links { flex: 1 1 320px; display: flex; flex-wrap: wrap; gap: 12px; }

/* Footer */
.site-footer { border-top: 1px solid var(--line); }
.site-footer .wrap { padding-block: 28px; display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; font-size: 14px; color: var(--muted); }
.site-footer .mono { font-family: var(--mono); }

/* Small screens */
@media (max-width: 640px) {
  .wrap { padding-inline: 16px; }
  .hero { padding-block: 56px; gap: 40px; }
  .hero h1 { font-size: 30px; }
  .section__inner, .contact { padding-block: 64px; }
  .section h2 { font-size: 32px; }
  .project { padding: 24px; gap: 28px; }
  .project__headline { font-size: 24px; }
  .roles__dates { flex-basis: 100%; }
}