/* ─────────────────────────────────────────────────────────────
   Fonts are self-hosted (IBM Plex, SIL OFL 1.1, latin subset).
   No external font request: embedding Google Fonts dynamically
   transmits every visitor's IP address to a US server, which is
   what LG München I, 3 O 17493/20 found unlawful without consent.
   Self-hosting removes the request rather than justifying it.
   ───────────────────────────────────────────────────────────── */
@font-face{font-family:"IBM Plex Mono";font-style:normal;font-weight:300;font-display:swap;
  src:url("fonts/ibm-plex-mono-latin-300-normal.woff2") format("woff2")}
@font-face{font-family:"IBM Plex Mono";font-style:normal;font-weight:400;font-display:swap;
  src:url("fonts/ibm-plex-mono-latin-400-normal.woff2") format("woff2")}
@font-face{font-family:"IBM Plex Mono";font-style:normal;font-weight:500;font-display:swap;
  src:url("fonts/ibm-plex-mono-latin-500-normal.woff2") format("woff2")}
@font-face{font-family:"IBM Plex Mono";font-style:normal;font-weight:600;font-display:swap;
  src:url("fonts/ibm-plex-mono-latin-600-normal.woff2") format("woff2")}
@font-face{font-family:"IBM Plex Sans";font-style:normal;font-weight:300;font-display:swap;
  src:url("fonts/ibm-plex-sans-latin-300-normal.woff2") format("woff2")}
@font-face{font-family:"IBM Plex Sans";font-style:normal;font-weight:400;font-display:swap;
  src:url("fonts/ibm-plex-sans-latin-400-normal.woff2") format("woff2")}
@font-face{font-family:"IBM Plex Sans";font-style:normal;font-weight:500;font-display:swap;
  src:url("fonts/ibm-plex-sans-latin-500-normal.woff2") format("woff2")}

/* ─────────────────────────────────────────────────────────────
   Palette — three measurement channels.
   R/G/B are the instrument's channel colours, held to muted
   jewel tones (vermilion, viridian, prussian) so the page reads
   as a lab document rather than a test card. Red carries the
   hierarchy; green and blue mark and confirm.
   ───────────────────────────────────────────────────────────── */
:root{
  --bg:#0b0e12; --surface:#12171d; --surface-2:#171e25;
  --line:#1e262f; --line-bright:#2b3641;
  --fg:#e9edf2; --muted:#8b9aa8; --faint:#5a6773;
  --c-red:#e2574a; --c-green:#46b184; --c-blue:#5d92e2;
  --accent:var(--c-red); --accent-dim:#7d3029;
  --grid:rgba(255,255,255,.026);
  --shadow:0 1px 0 rgba(255,255,255,.03), 0 18px 50px -20px rgba(0,0,0,.9);
}
@media (prefers-color-scheme: light){
  :root:not([data-theme="dark"]){
    --bg:#f3f1ec; --surface:#fffefa; --surface-2:#faf8f2;
    --line:#ddd8cd; --line-bright:#c5bfb2;
    --fg:#14181d; --muted:#5c6773; --faint:#8a8579;
    --c-red:#b2382c; --c-green:#1d6b50; --c-blue:#28518f;
    --accent:var(--c-red); --accent-dim:#d3a29b;
    --grid:rgba(0,0,0,.036);
    --shadow:0 1px 0 rgba(255,255,255,.7), 0 14px 40px -24px rgba(70,60,45,.45);
  }
}
:root[data-theme="light"]{
  --bg:#f3f1ec; --surface:#fffefa; --surface-2:#faf8f2;
  --line:#ddd8cd; --line-bright:#c5bfb2;
  --fg:#14181d; --muted:#5c6773; --faint:#8a8579;
  --c-red:#b2382c; --c-green:#1d6b50; --c-blue:#28518f;
  --accent:var(--c-red); --accent-dim:#d3a29b;
  --grid:rgba(0,0,0,.036);
  --shadow:0 1px 0 rgba(255,255,255,.7), 0 14px 40px -24px rgba(70,60,45,.45);
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:var(--bg); color:var(--fg);
  font-family:"IBM Plex Sans",system-ui,sans-serif;
  font-weight:300; line-height:1.65; letter-spacing:.005em;
  -webkit-font-smoothing:antialiased;
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size:44px 44px;
  overflow-x:hidden;
}
.wrap{max-width:1120px;margin:0 auto;padding:0 clamp(20px,5vw,56px)}

/* ── shared type ─────────────────────────────── */
.mono{font-family:"IBM Plex Mono",ui-monospace,monospace}
.label{
  font-family:"IBM Plex Mono",monospace; font-size:.685rem; font-weight:500;
  letter-spacing:.18em; text-transform:uppercase; color:var(--faint);
}
h2{
  font-family:"IBM Plex Mono",monospace; font-weight:400;
  font-size:clamp(1.35rem,2.6vw,1.85rem); letter-spacing:-.015em; line-height:1.2;
}
p{max-width:68ch}
a{color:inherit}

/* ── section chrome ──────────────────────────── */
section{position:relative;padding:clamp(64px,9vw,124px) 0;border-top:1px solid var(--line)}
.sec-head{display:flex;align-items:baseline;gap:18px;margin-bottom:clamp(30px,4vw,52px);flex-wrap:wrap}
.ch{
  font-family:"IBM Plex Mono",monospace;font-size:.685rem;font-weight:600;letter-spacing:.16em;
  color:var(--accent);border:1px solid var(--accent-dim);border-radius:2px;
  padding:3px 9px;white-space:nowrap;
}

/* ── hero ────────────────────────────────────── */
header{position:relative;padding:clamp(76px,13vw,150px) 0 clamp(50px,7vw,84px);overflow:hidden}
.scope{
  position:absolute;inset:auto 0 0 0;height:min(46vh,340px);width:100%;
  opacity:.5;pointer-events:none;z-index:0;
}
.scope path{
  fill:none;stroke-width:1.35;stroke-linecap:round;
  stroke-dasharray:4200;stroke-dashoffset:4200;
  animation:trace 3.4s cubic-bezier(.3,.7,.3,1) .35s forwards;
}
.scope .t-r{stroke:var(--c-red);
  filter:drop-shadow(0 0 7px color-mix(in srgb,var(--c-red) 50%,transparent))}
.scope .t-g{stroke:var(--c-green);stroke-width:1.1;opacity:.72;
  animation-delay:.7s;animation-duration:3.7s;
  filter:drop-shadow(0 0 6px color-mix(in srgb,var(--c-green) 42%,transparent))}
.scope .t-b{stroke:var(--c-blue);stroke-width:1;opacity:.6;
  animation-delay:1.05s;animation-duration:4s;
  filter:drop-shadow(0 0 6px color-mix(in srgb,var(--c-blue) 40%,transparent))}
@keyframes trace{to{stroke-dashoffset:0}}
header .wrap{position:relative;z-index:1}

.eyebrow{display:flex;align-items:center;gap:12px;margin-bottom:26px}
.dot{
  width:7px;height:7px;border-radius:50%;background:var(--accent);flex:none;
  box-shadow:0 0 0 0 color-mix(in srgb,var(--accent) 60%,transparent);
  animation:pulse 2.6s ease-out infinite;
}
@keyframes pulse{
  0%{box-shadow:0 0 0 0 color-mix(in srgb,var(--accent) 55%,transparent)}
  70%{box-shadow:0 0 0 11px transparent} 100%{box-shadow:0 0 0 0 transparent}
}
h1{
  font-family:"IBM Plex Mono",monospace;font-weight:500;
  font-size:clamp(2.3rem,7.4vw,5rem);line-height:.98;letter-spacing:-.045em;
  margin-bottom:.42em;
}
h1 .sur{display:block;color:var(--accent)}
.tagline{
  font-family:"IBM Plex Sans",system-ui,sans-serif;font-weight:300;
  font-size:clamp(1.12rem,2.2vw,1.5rem);letter-spacing:-.005em;
  line-height:1.48;max-width:38ch;color:var(--fg);margin-bottom:30px;
}
/* Emphasis by colour and weight, not italic — no italic face is self-hosted,
   and synthesised oblique looks wrong at display sizes. */
.tagline em{color:var(--accent);font-style:normal;font-weight:500}
.hero-meta{
  display:flex;gap:10px 26px;flex-wrap:wrap;
  font-family:"IBM Plex Mono",monospace;font-size:.775rem;color:var(--muted);
}
.hero-meta span{display:flex;align-items:center;gap:7px}
.hero-meta span::before{content:"";width:4px;height:4px;background:var(--line-bright);flex:none}

/* ── readout strip ───────────────────────────── */
.readout{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));
  border:1px solid var(--line);background:var(--surface);border-radius:3px;overflow:hidden;
}
.readout div{padding:20px 22px;border-right:1px solid var(--line)}
.readout div:last-child{border-right:0}
.readout b{
  display:block;font-family:"IBM Plex Mono",monospace;font-weight:500;
  font-size:clamp(1.5rem,3.4vw,2.05rem);letter-spacing:-.03em;line-height:1.1;
}
.readout div:nth-child(4n+1) b{color:var(--c-red)}
.readout div:nth-child(4n+2) b{color:var(--c-green)}
.readout div:nth-child(4n+3) b{color:var(--c-blue)}
.readout div:nth-child(4n+4) b{color:var(--fg)}
.readout small{display:block;margin-top:5px;font-size:.7rem;letter-spacing:.13em;
  text-transform:uppercase;color:var(--faint);font-family:"IBM Plex Mono",monospace}

/* ── expertise channels ──────────────────────── */
.channels{display:grid;gap:1px;background:var(--line);border:1px solid var(--line);border-radius:3px;overflow:hidden}
.chan{
  background:var(--surface);padding:clamp(20px,2.6vw,30px);
  display:grid;grid-template-columns:52px 1fr;gap:clamp(14px,2.5vw,28px);
  transition:background .22s ease;
}
.chan:hover{background:var(--surface-2)}
.chan-id{
  font-family:"IBM Plex Mono",monospace;font-size:.7rem;font-weight:600;
  letter-spacing:.1em;color:var(--faint);padding-top:5px;
}
.chan h3{font-family:"IBM Plex Mono",monospace;font-size:1.02rem;font-weight:500;
  letter-spacing:-.01em;margin-bottom:9px}
.chan p{font-size:.925rem;color:var(--muted);max-width:62ch}
.tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:14px}
.tag{
  font-family:"IBM Plex Mono",monospace;font-size:.685rem;letter-spacing:.03em;
  padding:3px 9px;border:1px solid var(--line-bright);border-radius:2px;color:var(--muted);
}
/* Channels cycle through the three instrument colours */
.chan{border-left:2px solid transparent}
.chan:nth-child(3n+1) .chan-id{color:var(--c-red)}
.chan:nth-child(3n+2) .chan-id{color:var(--c-green)}
.chan:nth-child(3n+3) .chan-id{color:var(--c-blue)}
.chan:nth-child(3n+1):hover{border-left-color:var(--c-red)}
.chan:nth-child(3n+2):hover{border-left-color:var(--c-green)}
.chan:nth-child(3n+3):hover{border-left-color:var(--c-blue)}

/* ── projects ────────────────────────────────── */
.projects{display:grid;gap:clamp(14px,2vw,20px);grid-template-columns:repeat(auto-fit,minmax(320px,1fr))}
.proj{
  border:1px solid var(--line);background:var(--surface);border-radius:3px;
  padding:clamp(22px,2.8vw,30px);display:flex;flex-direction:column;gap:13px;
  transition:border-color .22s ease,transform .22s ease;box-shadow:var(--shadow);
}
.proj:hover{border-color:var(--accent-dim);transform:translateY(-2px)}
.proj-top{display:flex;justify-content:space-between;align-items:flex-start;gap:14px}
.proj h3{font-family:"IBM Plex Mono",monospace;font-size:1.05rem;font-weight:500;letter-spacing:-.015em}
.role{font-family:"IBM Plex Mono",monospace;font-size:.66rem;letter-spacing:.11em;
  text-transform:uppercase;color:var(--accent);white-space:nowrap;padding-top:4px}
.proj p{font-size:.9rem;color:var(--muted)}
.spec{
  margin-top:auto;padding-top:14px;border-top:1px dashed var(--line-bright);
  display:grid;gap:5px;font-family:"IBM Plex Mono",monospace;font-size:.735rem;
}
.spec div{display:flex;gap:10px}
.spec dt{color:var(--faint);min-width:74px;flex:none}
.spec dd{color:var(--muted)}

/* reflow profile figure */
.figure{
  margin-top:clamp(26px,3.5vw,40px);border:1px solid var(--line);
  background:var(--surface);border-radius:3px;padding:clamp(18px,2.4vw,26px);
}
.figure svg{width:100%;height:auto;display:block}
.figure figcaption{
  margin-top:14px;font-family:"IBM Plex Mono",monospace;font-size:.72rem;
  color:var(--faint);letter-spacing:.02em;
}
.profile-curve{
  fill:none;stroke:var(--accent);stroke-width:2;stroke-linecap:round;stroke-linejoin:round;
  stroke-dasharray:1400;stroke-dashoffset:1400;
}
.in-view .profile-curve{animation:trace 2.6s cubic-bezier(.35,.75,.3,1) forwards}
.zone{fill:var(--accent);opacity:.05}
.zone-line{stroke:var(--line-bright);stroke-width:1;stroke-dasharray:3 4}
.ax{stroke:var(--line-bright);stroke-width:1}
.tick{font-family:"IBM Plex Mono",monospace;font-size:10px;fill:var(--faint)}

/* ── entity graph ────────────────────────────── */
.graph{display:grid;gap:1px;background:var(--line);border:1px solid var(--line);border-radius:3px;overflow:hidden}
.node{
  background:var(--surface);padding:clamp(18px,2.4vw,26px);
  display:grid;grid-template-columns:minmax(0,1.05fr) auto minmax(0,1.35fr);
  gap:clamp(12px,2.4vw,26px);align-items:center;
}
.node.self{background:var(--surface-2);border-left:2px solid var(--accent)}
.node-name{font-family:"IBM Plex Mono",monospace;font-size:.92rem;font-weight:500;word-break:break-word}
.node-name a{color:var(--accent);text-decoration:none;border-bottom:1px solid var(--accent-dim)}
.node-name a:hover{border-bottom-color:var(--accent)}
.node-name small{display:block;font-weight:400;font-size:.7rem;color:var(--faint);
  letter-spacing:.05em;margin-top:4px;text-transform:uppercase}
.rel{
  font-family:"IBM Plex Mono",monospace;font-size:.68rem;letter-spacing:.09em;
  color:var(--c-blue);border:1px solid var(--line-bright);border-radius:2px;
  padding:3px 10px;white-space:nowrap;text-align:center;
}
.node-desc{font-size:.865rem;color:var(--muted)}
.note{
  margin-top:20px;padding:16px 20px;border-left:2px solid var(--line-bright);
  background:var(--surface);font-size:.85rem;color:var(--muted);border-radius:0 3px 3px 0;
}
.note strong{color:var(--fg);font-weight:500}

/* ── talks & theses ──────────────────────────── */
.pubs{list-style:none;display:grid;gap:1px;background:var(--line);
  border:1px solid var(--line);border-radius:3px;overflow:hidden}
.pubs li{
  background:var(--surface);padding:clamp(20px,2.6vw,28px);
  display:grid;grid-template-columns:76px 1fr;gap:clamp(14px,2.4vw,26px);
  transition:background .22s ease;
}
.pubs li:hover{background:var(--surface-2)}
.yr{font-family:"IBM Plex Mono",monospace;font-size:.9rem;font-weight:500;padding-top:2px}
.pubs li:nth-child(3n+1) .yr{color:var(--c-red)}
.pubs li:nth-child(3n+2) .yr{color:var(--c-green)}
.pubs li:nth-child(3n+3) .yr{color:var(--c-blue)}
.kind{display:block;font-family:"IBM Plex Mono",monospace;font-size:.66rem;
  letter-spacing:.13em;text-transform:uppercase;color:var(--faint);margin-bottom:7px}
.pubs h3{font-family:"IBM Plex Mono",monospace;font-size:.98rem;font-weight:500;
  letter-spacing:-.012em;line-height:1.35;margin-bottom:8px}
.pubs p{font-size:.885rem;color:var(--muted);margin-bottom:9px}
.pubs a{font-family:"IBM Plex Mono",monospace;font-size:.74rem;color:var(--accent);
  text-decoration:none;border-bottom:1px solid var(--accent-dim);padding-bottom:1px}
.pubs a:hover{border-bottom-color:var(--accent)}

/* ── contact / footer ────────────────────────── */
.links{display:flex;flex-wrap:wrap;gap:11px;margin-top:26px}
.btn{
  font-family:"IBM Plex Mono",monospace;font-size:.8rem;letter-spacing:.03em;
  text-decoration:none;padding:11px 19px;border:1px solid var(--line-bright);
  border-radius:2px;color:var(--fg);transition:all .2s ease;background:var(--surface);
}
.btn:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-1px)}
.btn.primary{background:var(--accent);border-color:var(--accent);color:var(--bg);font-weight:500}
.btn.primary:hover{filter:brightness(1.12);color:var(--bg)}
footer{border-top:1px solid var(--line);padding:44px 0 60px;
  font-family:"IBM Plex Mono",monospace;font-size:.735rem;color:var(--faint)}
.foot-row{display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap}
footer a{color:var(--muted);text-decoration:none;border-bottom:1px solid var(--line)}
footer a:hover{color:var(--accent)}

/* ── theme toggle ────────────────────────────── */
.toggle{
  position:fixed;top:18px;right:18px;z-index:50;width:38px;height:38px;
  display:grid;place-items:center;cursor:pointer;background:var(--surface);
  border:1px solid var(--line-bright);border-radius:3px;color:var(--muted);
  font-family:"IBM Plex Mono",monospace;font-size:.85rem;transition:all .2s ease;
}
.toggle:hover{color:var(--accent);border-color:var(--accent)}

/* ── entrance ────────────────────────────────── */
.rise{opacity:0;transform:translateY(16px);animation:rise .78s cubic-bezier(.2,.7,.3,1) forwards}
@keyframes rise{to{opacity:1;transform:none}}
.d1{animation-delay:.06s}.d2{animation-delay:.16s}.d3{animation-delay:.26s}
.d4{animation-delay:.36s}.d5{animation-delay:.46s}
.reveal{opacity:0;transform:translateY(20px);transition:opacity .7s ease,transform .7s cubic-bezier(.2,.7,.3,1)}
.reveal.in-view{opacity:1;transform:none}

@media (max-width:720px){
  .node{grid-template-columns:1fr;gap:11px}
  .rel{justify-self:start}
  .chan{grid-template-columns:1fr;gap:8px}
  .pubs li{grid-template-columns:1fr;gap:6px}
  .readout div{border-right:0;border-bottom:1px solid var(--line)}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .rise,.reveal{opacity:1;transform:none}
  .scope path,.profile-curve{stroke-dashoffset:0}
}

/* ── legal pages (Impressum / Datenschutz) ───── */
.legal{max-width:74ch;margin:0 auto;padding:clamp(56px,9vw,110px) clamp(20px,5vw,56px) 80px}
.legal .back{
  font-family:"IBM Plex Mono",monospace;font-size:.74rem;letter-spacing:.05em;
  color:var(--muted);text-decoration:none;display:inline-block;margin-bottom:38px;
}
.legal .back:hover{color:var(--accent)}
.legal h1{
  font-family:"IBM Plex Mono",monospace;font-size:clamp(1.6rem,4vw,2.3rem);
  font-weight:500;letter-spacing:-.03em;line-height:1.1;margin-bottom:10px;color:var(--fg);
}
.legal .sub{font-family:"IBM Plex Mono",monospace;font-size:.75rem;letter-spacing:.13em;
  text-transform:uppercase;color:var(--faint);margin-bottom:44px}
.legal h2{
  font-size:1.05rem;font-weight:500;margin:38px 0 12px;color:var(--fg);
  padding-top:20px;border-top:1px solid var(--line);
}
.legal h3{font-family:"IBM Plex Sans",sans-serif;font-size:.94rem;font-weight:500;margin:22px 0 8px}
.legal p{margin-bottom:13px;color:var(--muted);font-size:.925rem;max-width:none}
.legal ul{margin:0 0 14px 20px;color:var(--muted);font-size:.925rem}
.legal li{margin-bottom:6px}
.legal a{color:var(--accent)}
.legal address{font-style:normal;font-family:"IBM Plex Mono",monospace;font-size:.88rem;
  color:var(--fg);line-height:1.75;margin-bottom:14px}
.todo{
  display:block;background:color-mix(in srgb,var(--c-red) 12%,transparent);
  border-left:2px solid var(--c-red);padding:13px 17px;margin:12px 0 18px;
  font-family:"IBM Plex Mono",monospace;font-size:.79rem;color:var(--fg);border-radius:0 3px 3px 0;
}
.todo b{color:var(--c-red);font-weight:600}