/* ==========================================================================
   jlhilgert.eu — design system
   Concept: "Instruments of measure" — data-as-identity.
   Display: Bricolage Grotesque · Body: Inter · Data/utility: IBM Plex Mono
   ========================================================================== */

/* ---- Fonts (self-hosted, latin subset) ---------------------------------- */
@font-face { font-family:"Bricolage"; font-weight:600; font-display:swap;
  src:url("fonts/bricolage-600.woff2") format("woff2"); }
@font-face { font-family:"Bricolage"; font-weight:800; font-display:swap;
  src:url("fonts/bricolage-800.woff2") format("woff2"); }
@font-face { font-family:"InterVF"; font-weight:400; font-display:swap;
  src:url("fonts/inter-400.woff2") format("woff2"); }
@font-face { font-family:"InterVF"; font-weight:500; font-display:swap;
  src:url("fonts/inter-500.woff2") format("woff2"); }
@font-face { font-family:"InterVF"; font-weight:600; font-display:swap;
  src:url("fonts/inter-600.woff2") format("woff2"); }
@font-face { font-family:"PlexMono"; font-weight:400; font-display:swap;
  src:url("fonts/plexmono-400.woff2") format("woff2"); }
@font-face { font-family:"PlexMono"; font-weight:500; font-display:swap;
  src:url("fonts/plexmono-500.woff2") format("woff2"); }

/* ---- Tokens ------------------------------------------------------------- */
:root, :root[data-theme="dark"] {
  --bg:        #0E1016;
  --surface:   #14171F;
  --surface-2: #1B1F2A;
  --text:      #ECEEF3;
  --text-dim:  #99A0B0;
  --text-faint:#606776;
  --signal:    #FF4A2E;
  --on-signal: #0E1016;
  --line:      rgba(255,255,255,.11);
  --line-soft: rgba(255,255,255,.06);
  --shadow:    0 24px 60px -20px rgba(0,0,0,.7);
  color-scheme: dark;
}
:root[data-theme="light"] {
  --bg:        #EDEEF2;
  --surface:   #FFFFFF;
  --surface-2: #F5F6F9;
  --text:      #14161C;
  --text-dim:  #545A69;
  --text-faint:#8A909E;
  --signal:    #E23A1E;
  --on-signal: #FFFFFF;
  --line:      rgba(16,18,24,.14);
  --line-soft: rgba(16,18,24,.07);
  --shadow:    0 24px 60px -28px rgba(20,22,30,.28);
  color-scheme: light;
}
/* diverging "index" ramp — the only place multi-hue color is used */
:root {
  --c1:#2743B0; --c2:#1FA8A0; --c3:#F2B33D; --c4:#E24A3B;
  --maxw: 1180px;
  --pad: clamp(1.15rem, 4vw, 3.25rem);
  --font-display:"Bricolage", "Arial Black", sans-serif;
  --font-body:"InterVF", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono:"PlexMono", ui-monospace, "SFMono-Regular", Menlo, monospace;
}

/* ---- Reset / base ------------------------------------------------------- */
*, *::before, *::after { box-sizing:border-box; }
html { -webkit-text-size-adjust:100%; scroll-behavior:smooth; }
body {
  margin:0; background:var(--bg); color:var(--text);
  font-family:var(--font-body); font-weight:400; font-size:1.02rem; line-height:1.6;
  -webkit-font-smoothing:antialiased; text-rendering:optimizeLegibility;
  transition:background-color .4s ease, color .4s ease;
  overflow-x:hidden;
}
img { max-width:100%; display:block; }
a { color:inherit; text-decoration:none; }
:focus-visible { outline:2.5px solid var(--signal); outline-offset:3px; border-radius:2px; }
::selection { background:var(--signal); color:var(--on-signal); }

/* ---- Layout ------------------------------------------------------------- */
.wrap { width:100%; max-width:var(--maxw); margin-inline:auto; padding-inline:var(--pad); }
.section { padding-block:clamp(3.5rem, 9vw, 7rem); }

/* eyebrow / mono label — a structural device (encodes the "data label" idea) */
.eyebrow {
  font-family:var(--font-mono); font-weight:500; font-size:.72rem;
  letter-spacing:.2em; text-transform:uppercase; color:var(--text-dim);
  display:inline-block; max-width:100%;
}
.eyebrow::before { content:""; width:1.6rem; height:2px; background:var(--signal);
  display:inline-block; vertical-align:middle; margin-right:.6rem; margin-bottom:2px; }

h1,h2,h3 { font-family:var(--font-display); font-weight:800; line-height:1.02;
  letter-spacing:-.02em; margin:0; }
.h-xl { font-size:clamp(2.8rem, 9vw, 6.6rem); }
.h-lg { font-size:clamp(2rem, 5vw, 3.4rem); letter-spacing:-.025em; }
.h-md { font-size:clamp(1.35rem, 2.5vw, 1.9rem); font-weight:600; letter-spacing:-.01em; }
.lead { font-size:clamp(1.05rem, 1.6vw, 1.28rem); color:var(--text-dim); line-height:1.62; }
.mono { font-family:var(--font-mono); }

/* ---- Stripe rule (mini signature divider) ------------------------------- */
.stripe-rule { display:flex; height:6px; width:100%; overflow:hidden; border-radius:99px; }
.stripe-rule > i { flex:1 1 auto; height:100%; }

/* ---- Nav ---------------------------------------------------------------- */
.nav {
  position:sticky; top:0; z-index:50;
  background:var(--bg);
  background:color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter:saturate(1.4) blur(14px);
  border-bottom:1px solid var(--line-soft);
}
.nav-inner { display:flex; align-items:center; gap:1.2rem; height:64px; }
.brand { display:flex; align-items:center; gap:.7rem; font-family:var(--font-display);
  font-weight:800; font-size:1.02rem; letter-spacing:-.01em; margin-right:auto; }
.brand img { width:30px; height:30px; border-radius:6px; }
.nav-links { display:flex; align-items:center; gap:.35rem; }
.nav-links a {
  font-family:var(--font-mono); font-size:.8rem; letter-spacing:.02em;
  padding:.5rem .7rem; border-radius:8px; color:var(--text-dim);
  transition:color .2s ease, background-color .2s ease; white-space:nowrap;
}
.nav-links a:hover, .nav-links a[aria-current="page"] { color:var(--text); background:var(--surface-2); }
.nav-links a[aria-current="page"] { box-shadow:inset 0 -2px 0 var(--signal); }
.icon-btn {
  display:inline-grid; place-items:center; width:38px; height:38px; flex:0 0 auto;
  border:1px solid var(--line); border-radius:9px; background:transparent; color:var(--text);
  cursor:pointer; transition:border-color .2s, background-color .2s, transform .1s;
}
.icon-btn:hover { border-color:var(--signal); }
.icon-btn:active { transform:scale(.94); }
.icon-btn svg { width:18px; height:18px; }
.theme-toggle .moon { display:none; }
:root[data-theme="light"] .theme-toggle .sun { display:none; }
:root[data-theme="light"] .theme-toggle .moon { display:block; }
.nav-toggle { display:none; }

/* ---- Buttons ------------------------------------------------------------ */
.btn {
  display:inline-flex; align-items:center; gap:.55rem;
  font-family:var(--font-mono); font-size:.82rem; letter-spacing:.02em; font-weight:500;
  padding:.72rem 1.15rem; border-radius:10px; border:1px solid var(--line);
  color:var(--text); background:var(--surface); cursor:pointer;
  transition:border-color .2s, transform .1s, background-color .2s;
}
.btn:hover { border-color:var(--signal); transform:translateY(-1px); }
.btn-primary { background:var(--signal); color:var(--on-signal); border-color:var(--signal); }
.btn-primary:hover { filter:brightness(1.06); }
.btn svg { width:16px; height:16px; }

/* ---- Footer ------------------------------------------------------------- */
.footer { border-top:1px solid var(--line-soft); padding-block:2.5rem; margin-top:3rem; }
.footer .wrap { display:flex; flex-wrap:wrap; gap:1rem 2rem; align-items:center;
  justify-content:space-between; }
.footer p { margin:0; font-size:.8rem; color:var(--text-faint); font-family:var(--font-mono); line-height:1.7; }
.footer a { color:var(--text-dim); border-bottom:1px solid var(--line); }
.footer a:hover { color:var(--signal); }

/* ==========================================================================
   HERO (home)
   ========================================================================== */
.hero { position:relative; padding-top:clamp(2.5rem,6vw,4.5rem); padding-bottom:clamp(2rem,5vw,3.5rem); }
.hero-grid { display:grid; grid-template-columns:minmax(0,1.35fr) minmax(0,.85fr); gap:clamp(1.5rem,4vw,3.5rem); align-items:end; }
.hero-grid > *, .cv-head > *, .card > *, .facts > * { min-width:0; }
.eyebrow { overflow-wrap:break-word; }
.hero-name { margin:.5rem 0 0; }
.hero-name .given { display:block; color:var(--text); }
.hero-name .family { display:block; color:var(--text); }
@supports (-webkit-text-stroke:1px black) {
  .hero-name .family { -webkit-text-fill-color:transparent; -webkit-text-stroke:1.6px var(--text); }
}
.hero-role { margin-top:1.4rem; max-width:34ch; }
.hero-role b { color:var(--text); font-weight:600; }
.hero-actions { display:flex; flex-wrap:wrap; gap:.6rem; margin-top:1.8rem; }

/* portrait with stripe treatment */
.portrait { position:relative; }
.portrait-frame { position:relative; border-radius:14px; overflow:hidden; border:1px solid var(--line);
  background:var(--surface); box-shadow:var(--shadow); }
.portrait-frame img { width:100%; aspect-ratio:4/5; object-fit:cover;
  filter:grayscale(1) contrast(1.04); mix-blend-mode:luminosity; }
.portrait-frame::after { content:""; position:absolute; inset:0;
  background:linear-gradient(160deg, transparent 55%, color-mix(in srgb,var(--signal) 26%, transparent)); pointer-events:none; }
.portrait .stripe-rule { position:absolute; left:0; right:0; bottom:-3px; height:8px; border-radius:0; z-index:2; }

/* the signature stripe field */
.stripe-field { display:flex; align-items:flex-end; gap:2px; width:100%;
  height:clamp(84px,14vw,150px); margin-top:clamp(1.6rem,4vw,2.6rem); }
.stripe-field > i { flex:1 1 0; height:var(--h,40%); border-radius:2px 2px 0 0;
  transform-origin:bottom; transform:scaleY(var(--s,1)); opacity:var(--o,1);
  transition:transform .9s cubic-bezier(.16,1,.3,1), opacity .6s ease; }
.stripe-caption { display:flex; flex-wrap:wrap; gap:.3rem 1rem; justify-content:space-between; margin-top:.6rem;
  font-family:var(--font-mono); font-size:.68rem; letter-spacing:.14em;
  text-transform:uppercase; color:var(--text-faint); }

/* ---- Facts / data marks ------------------------------------------------- */
.facts { display:grid; grid-template-columns:repeat(auto-fit,minmax(150px,1fr)); gap:1px;
  background:var(--line-soft); border:1px solid var(--line-soft); border-radius:14px; overflow:hidden; }
.fact { background:var(--bg); padding:1.3rem 1.35rem; }
.fact .n { font-family:var(--font-display); font-weight:800; font-size:2rem; line-height:1;
  letter-spacing:-.02em; display:flex; align-items:baseline; gap:.3rem; }
.fact .n span { width:.55rem; height:.55rem; border-radius:2px; }
.fact .l { margin-top:.55rem; font-family:var(--font-mono); font-size:.72rem;
  letter-spacing:.1em; text-transform:uppercase; color:var(--text-dim); }

/* ---- Language switcher (segmented) -------------------------------------- */
.segmented { display:inline-flex; padding:4px; gap:2px; border:1px solid var(--line);
  border-radius:11px; background:var(--surface); }
.segmented button, .segmented a {
  font-family:var(--font-mono); font-size:.76rem; letter-spacing:.06em; text-transform:uppercase;
  padding:.42rem .8rem; border:0; border-radius:8px; background:transparent; color:var(--text-dim);
  cursor:pointer; transition:color .2s, background-color .2s; }
.segmented button[aria-selected="true"], .segmented a[aria-current="page"] { background:var(--signal); color:var(--on-signal); }
.bio-panel { display:none; }
.bio-panel.is-active { display:block; }
.bio-panel p { margin:0 0 1.15rem; max-width:68ch; }
.bio-panel a { color:var(--text); border-bottom:1px solid var(--signal); }
.bio-panel a:hover { color:var(--signal); }

/* ==========================================================================
   CARDS (projects)
   ========================================================================== */
.card-grid { display:grid; grid-template-columns:repeat(auto-fill,minmax(300px,1fr)); gap:1.25rem; }
.card { position:relative; display:flex; flex-direction:column;
  border:1px solid var(--line); border-radius:16px; background:var(--surface); overflow:hidden;
  transition:border-color .25s, transform .25s, box-shadow .25s; }
.card:hover { border-color:var(--signal); transform:translateY(-4px); box-shadow:var(--shadow); }
.card .stripe-rule { height:5px; border-radius:0; }
.card-body { padding:1.5rem 1.5rem 1.7rem; display:flex; flex-direction:column; gap:.7rem; flex:1; }
.card-kicker { display:flex; align-items:center; justify-content:space-between; gap:.5rem;
  font-family:var(--font-mono); font-size:.7rem; letter-spacing:.14em; text-transform:uppercase; color:var(--text-faint); }
.card-kicker .flag { width:20px; height:auto; border-radius:2px; }
.card h3 { font-size:1.35rem; font-weight:600; letter-spacing:-.015em; }
.card p { margin:0; color:var(--text-dim); font-size:.94rem; flex:1; }
.card-links { display:flex; flex-wrap:wrap; gap:.5rem; margin-top:.4rem; }
.card-link { font-family:var(--font-mono); font-size:.76rem; color:var(--text);
  display:inline-flex; align-items:center; gap:.35rem; border-bottom:1px solid var(--line); padding-bottom:2px; }
.card-link:hover { color:var(--signal); border-color:var(--signal); }
.card-link svg { width:13px; height:13px; }

/* ==========================================================================
   CV
   ========================================================================== */
.cv-head { display:grid; grid-template-columns:1fr auto; gap:2rem; align-items:end; }
.cv-portrait { width:120px; height:150px; object-fit:cover; border-radius:10px;
  border:1px solid var(--line); filter:grayscale(1) contrast(1.03); }
.cv-meta { display:flex; flex-wrap:wrap; gap:.5rem .9rem; margin-top:1.2rem;
  font-family:var(--font-mono); font-size:.82rem; color:var(--text-dim); }
.cv-meta span { display:inline-flex; align-items:center; gap:.4rem; }
.cv-actions { display:flex; flex-wrap:wrap; gap:.6rem; margin-top:1.5rem; }

.cv-section { margin-top:clamp(2.5rem,5vw,3.5rem); }
.cv-section > h2 { margin-bottom:1.6rem; }
.entry { display:grid; grid-template-columns:minmax(0,1fr) minmax(140px,190px); gap:1.5rem;
  padding:1.4rem 0; border-top:1px solid var(--line-soft); }
.entry:first-of-type { border-top:0; }
.entry-role { font-family:var(--font-display); font-weight:600; font-size:1.18rem; letter-spacing:-.01em; }
.entry-org { color:var(--signal); font-weight:500; margin-top:.15rem; }
.entry-desc { color:var(--text-dim); font-size:.94rem; margin-top:.6rem; max-width:60ch; }
.entry-desc a { color:var(--text); border-bottom:1px solid var(--line); }
.entry-desc a:hover { color:var(--signal); }
.entry-when { font-family:var(--font-mono); font-size:.8rem; color:var(--text-dim); text-align:right; line-height:1.7; }
.entry-when .loc { color:var(--text-faint); display:block; }
.entry-when .tag { display:inline-block; margin-top:.4rem; font-size:.68rem; letter-spacing:.08em;
  text-transform:uppercase; color:var(--c3); border:1px solid var(--line); border-radius:6px; padding:.1rem .4rem; }

.skills { display:grid; grid-template-columns:repeat(auto-fit,minmax(260px,1fr)); gap:1.4rem; }
.skill-group h3 { font-family:var(--font-mono); font-size:.74rem; letter-spacing:.14em;
  text-transform:uppercase; color:var(--text-dim); font-weight:500; margin-bottom:.8rem; }
.chips { display:flex; flex-wrap:wrap; gap:.5rem; }
.chip { font-family:var(--font-mono); font-size:.8rem; padding:.32rem .65rem;
  border:1px solid var(--line); border-radius:7px; color:var(--text); background:var(--surface); }

/* ==========================================================================
   ARTICLE (warming stripes)
   ========================================================================== */
.article { max-width:760px; }
.article h2 { margin-top:2.4rem; margin-bottom:.9rem; }
.article p { color:var(--text-dim); margin:0 0 1.15rem; }
.article figure { margin:2rem 0; }
.article figure img { width:100%; border-radius:12px; border:1px solid var(--line); }
.article figcaption { font-family:var(--font-mono); font-size:.74rem; color:var(--text-faint);
  margin-top:.7rem; text-align:center; }
pre.code { background:var(--surface); border:1px solid var(--line); border-left:3px solid var(--signal);
  border-radius:10px; padding:1.1rem 1.25rem; overflow-x:auto; margin:0 0 1.4rem;
  font-family:var(--font-mono); font-size:.82rem; line-height:1.6; color:var(--text); }
pre.code .c { color:var(--text-faint); }

/* ==========================================================================
   APPS
   ========================================================================== */
.app-card .card-body { gap:1.15rem; }
.app-head { display:flex; align-items:center; gap:1rem; }
.app-icon { width:58px; height:58px; border-radius:14px; flex:0 0 auto; object-fit:cover;
  border:1px solid var(--line); background:var(--surface-2); }
.app-name { font-family:var(--font-display); font-weight:600; font-size:1.22rem; letter-spacing:-.01em; }
.app-desc { margin:.25rem 0 0; color:var(--text-dim); font-size:.9rem; }
.platform-buttons { display:flex; flex-wrap:wrap; gap:.5rem; margin-top:.1rem; }
.platform-btn { display:inline-flex; align-items:center; gap:.42rem;
  font-family:var(--font-mono); font-size:.76rem; font-weight:500; letter-spacing:.02em;
  padding:.45rem .8rem; border-radius:999px; border:1px solid var(--line);
  background:var(--surface-2); color:var(--text); cursor:pointer;
  transition:border-color .2s, color .2s, transform .1s; }
.platform-btn:hover { border-color:var(--signal); color:var(--signal); transform:translateY(-1px); }
.platform-btn svg { width:14px; height:14px; fill:currentColor; flex-shrink:0; }
.platform-btn.is-disabled { background:transparent; color:var(--text-faint);
  border-color:var(--line-soft); pointer-events:none; }
.apps-note { display:flex; align-items:flex-start; gap:.55rem; margin-top:1.5rem;
  font-family:var(--font-mono); font-size:.74rem; line-height:1.6; color:var(--text-dim);
  border:1px dashed var(--line); border-radius:10px; padding:.75rem 1rem; max-width:60ch; }
.apps-note svg { width:15px; height:15px; flex:0 0 auto; margin-top:1px; stroke:var(--signal); }

/* ==========================================================================
   Reveal-on-scroll
   ========================================================================== */
.reveal { opacity:0; transform:translateY(22px); transition:opacity .7s ease, transform .7s cubic-bezier(.16,1,.3,1); }
.reveal.in { opacity:1; transform:none; }

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width:860px) {
  .hero-grid { grid-template-columns:1fr; align-items:start; }
  .portrait { max-width:320px; }
  .cv-head { grid-template-columns:1fr; }
  .entry { grid-template-columns:1fr; gap:.5rem; }
  .entry-when { text-align:left; }
  .nav-links { position:fixed; inset:64px 0 auto 0; flex-direction:column; align-items:stretch;
    gap:0; background:var(--bg); border-bottom:1px solid var(--line); padding:.5rem var(--pad) 1rem;
    transform:translateY(-120%); transition:transform .3s ease; }
  .nav-links.open { transform:none; }
  .nav-links a { padding:.85rem .4rem; border-radius:0; border-bottom:1px solid var(--line-soft); }
  .nav-links a[aria-current="page"] { box-shadow:none; color:var(--signal); }
  .nav-toggle { display:inline-grid; }
}

@media (prefers-reduced-motion:reduce) {
  * { scroll-behavior:auto !important; }
  .reveal { opacity:1 !important; transform:none !important; transition:none !important; }
  .stripe-field > i { transition:none !important; }
}