/* ABTAHI – öffentliche Seite. Farben, Schrift und Raster an einer Stelle: :root */
@font-face{font-family:"Abtahi Sans";src:url(/assets/fonts/poppins-400.woff) format("woff");font-weight:400;font-style:normal;font-display:swap}
@font-face{font-family:"Abtahi Sans";src:url(/assets/fonts/poppins-500.woff) format("woff");font-weight:500 700;font-style:normal;font-display:swap}
@font-face{font-family:"Abtahi Mono";src:url(/assets/fonts/dejavu-mono.woff) format("woff");font-weight:400;font-style:normal;font-display:swap}

:root{
  --bg:#0a1222;          /* Zeichnungsblau, Seitenhintergrund */
  --bg-2:#0d182c;        /* abgesetzte Bänder */
  --panel:#111e36;       /* Karten, Chat */
  --line:rgba(150,180,235,.14);
  --line-strong:rgba(150,180,235,.3);
  --text:#e8eef8;
  --muted:#96a4bd;
  --signal:#6fa4ff;      /* Akzent: Buttons, Links, Fokus */
  --signal-ink:#06101f;
  --dim:#a9c4f5;         /* Bemaßung und technische Linien */
  --sans:"Abtahi Sans",system-ui,"Segoe UI",Roboto,sans-serif;
  --mono:"Abtahi Mono",ui-monospace,Consolas,monospace;
  --max:1240px;
  --pad:max(clamp(20px,5vw,72px),calc((100vw - var(--max))/2));
  --radius:8px;
  color-scheme:dark;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:84px;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--text);font:400 17px/1.65 var(--sans);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
a{color:inherit}
img{max-width:100%;display:block}
button,input{font:inherit;color:inherit}
button{cursor:pointer}
button:disabled{opacity:.5;cursor:wait}
:focus-visible{outline:2px solid var(--signal);outline-offset:3px;border-radius:4px}
::selection{background:var(--signal);color:var(--signal-ink)}
[hidden]{display:none!important}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.skip{position:fixed;left:16px;top:-80px;z-index:100;background:var(--signal);color:var(--signal-ink);padding:10px 14px;border-radius:var(--radius);font-weight:500}
.skip:focus{top:12px}
h1,h2,h3{font-weight:500;margin:0;text-wrap:balance}
p{margin:0}

/* ---------- Kopfzeile ---------- */
.site-header{position:sticky;top:0;z-index:30;height:72px;padding:0 var(--pad);display:flex;align-items:center;justify-content:space-between;gap:24px;background:rgba(10,18,34,.78);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid transparent;transition:border-color .3s}
.site-header.scrolled{border-bottom-color:var(--line)}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:500;font-size:20px;letter-spacing:-.02em;text-decoration:none}
.brand-mark{display:grid;place-items:center;width:30px;height:30px;border:1.5px solid var(--signal);border-radius:6px;font-size:15px;color:var(--signal);line-height:1}
.site-nav{display:flex;align-items:center;gap:6px;font-size:15px}
.site-nav a{text-decoration:none;color:var(--muted);padding:8px 12px;border-radius:6px;transition:color .2s,background .2s}
.site-nav a:hover{color:var(--text);background:rgba(150,180,235,.08)}
.site-nav .nav-contact{color:var(--text);border:1px solid var(--line-strong);margin-left:10px}
.site-nav .nav-contact:hover{border-color:var(--signal);background:none}
.menu-toggle{display:none;background:none;border:1px solid var(--line-strong);border-radius:6px;width:42px;height:38px;padding:0;place-items:center}
.menu-bars,.menu-bars::before{display:block;width:18px;height:1.5px;background:var(--text);position:relative;transition:transform .25s}
.menu-bars::before{content:"";position:absolute;top:6px;left:0}
.menu-toggle[aria-expanded="true"] .menu-bars{transform:translateY(3px) rotate(45deg)}
.menu-toggle[aria-expanded="true"] .menu-bars::before{transform:translateY(-6px) rotate(-90deg)}

/* ---------- Einstieg ---------- */
.hero{display:grid;grid-template-columns:minmax(0,11fr) minmax(0,13fr);gap:clamp(28px,4vw,64px);align-items:center;padding:clamp(40px,6vw,72px) var(--pad) clamp(56px,7vw,96px);min-height:min(calc(100svh - 72px),860px)}
.hero-name{color:var(--muted);font-weight:500;font-size:16px}
.hero h1{font-size:clamp(40px,4.6vw,72px);line-height:1.04;letter-spacing:-.035em;margin:.35em 0 .5em}
.hero-lead{color:var(--muted);font-size:18px;max-width:30em}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px}
.button{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 22px;border-radius:var(--radius);background:var(--signal);color:var(--signal-ink);font-weight:500;font-size:16px;text-decoration:none;border:1px solid var(--signal);transition:background .2s,color .2s,border-color .2s}
.button:hover{background:#8db8ff;border-color:#8db8ff}
.button--ghost{background:transparent;color:var(--text);border-color:var(--line-strong)}
.button--ghost:hover{background:rgba(150,180,235,.08);border-color:var(--dim)}

/* Zeichnungsblatt mit 3D-Ansicht und Schriftfeld */
.sheet{margin:0;border:1px solid var(--line-strong);border-radius:4px;background:var(--bg-2);position:relative}
.sheet::before{content:"";position:absolute;inset:8px;border:1px solid var(--line);pointer-events:none;border-radius:2px}
.sheet-view{position:relative;height:clamp(360px,44vw,560px);background-image:radial-gradient(ellipse 70% 60% at 50% 42%,rgba(111,164,255,.07),transparent 70%),linear-gradient(rgba(150,180,235,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(150,180,235,.06) 1px,transparent 1px);background-size:auto,28px 28px,28px 28px}
.sheet-view canvas{position:absolute;inset:0;width:100%;height:100%;display:block}
#cad-view{cursor:grab;touch-action:pan-y}
#cad-view:active{cursor:grabbing}
#cad-overlay{pointer-events:none}
.sheet-controls{position:absolute;right:18px;bottom:14px;display:flex;align-items:center;gap:18px;font-size:13px;color:var(--muted)}
.motion-control{background:none;border:0;padding:4px 0;color:var(--dim);font-size:13px;text-decoration:underline;text-underline-offset:4px;text-decoration-color:var(--line-strong)}
.motion-control:hover{color:var(--text)}
.title-block{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1px;border-top:1px solid var(--line-strong);position:relative;z-index:1;background:var(--line-strong)}
.tb-cell{padding:10px 14px;min-width:0;background:var(--bg-2)}
.tb-wide{grid-column:span 2}
.title-block span{display:block;font-size:12px;color:var(--muted)}
.title-block strong{display:block;font-weight:500;font-size:15px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.title-block .tb-cell:nth-child(3) strong,.title-block .tb-cell:nth-child(6) strong{font-family:var(--mono);font-weight:400;font-size:14px}

/* ---------- Abschnitte ---------- */
.section{padding:clamp(72px,9vw,120px) var(--pad)}
.section--band{background:var(--bg-2);border-block:1px solid var(--line)}
.section-head{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:24px 48px;align-items:end;margin-bottom:clamp(36px,5vw,56px)}
.section-head h2{font-size:clamp(34px,4vw,56px);line-height:1.08;letter-spacing:-.03em}
.section-head p{color:var(--muted);max-width:34em}
.text-link{display:inline-block;margin-top:32px;color:var(--dim);text-underline-offset:5px;text-decoration-color:var(--line-strong)}
.text-link:hover{color:var(--text);text-decoration-color:var(--signal)}

/* Projekte */
.projects{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.projects-empty{grid-column:1/-1;border:1px dashed var(--line-strong);border-radius:var(--radius);padding:40px;color:var(--muted);text-align:center}
.projects-empty a{color:var(--dim)}
.project{border:1px solid var(--line);border-radius:var(--radius);background:var(--panel);overflow:hidden;display:flex;flex-direction:column;transition:border-color .25s}
.project:hover{border-color:var(--line-strong)}
.project--lead{grid-column:1/-1;display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,1fr)}
.project-visual{position:relative;aspect-ratio:16/10;background:var(--bg-2);overflow:hidden;border-bottom:1px solid var(--line)}
.project--lead .project-visual{aspect-ratio:auto;min-height:320px;border-bottom:0;border-right:1px solid var(--line)}
.project-visual img{width:100%;height:100%;object-fit:cover;transition:transform .6s}
.project:hover .project-visual img{transform:scale(1.03)}
.project-visual.is-drawing{background-image:linear-gradient(rgba(150,180,235,.07) 1px,transparent 1px),linear-gradient(90deg,rgba(150,180,235,.07) 1px,transparent 1px);background-size:24px 24px}
.project-initial{position:absolute;inset:0;display:grid;place-items:center;font-size:clamp(120px,14vw,200px);font-weight:500;line-height:1;color:transparent;-webkit-text-stroke:1.5px var(--dim);opacity:.55}
.project-pos{position:absolute;left:14px;top:12px;font:13px var(--mono);color:var(--dim)}
.project-body{padding:24px 24px 26px;display:flex;flex-direction:column;gap:12px;flex:1}
.project--lead .project-body{padding:clamp(24px,3vw,40px);justify-content:center}
.project-body h3{font-size:clamp(22px,2vw,28px);letter-spacing:-.02em;line-height:1.2}
.project-head{display:flex;align-items:baseline;justify-content:space-between;gap:12px}
.project-description{color:var(--muted);white-space:pre-line}
.status{flex:none;font-size:12px;font-weight:500;border-radius:20px;padding:2px 10px;border:1px solid currentColor}
.status--beta{color:#ffc98f}
.status--arbeit{color:var(--dim)}
.project-note{font-size:14px;color:var(--muted);border-top:1px dashed var(--line-strong);padding-top:12px;margin-top:4px}
.tags{display:flex;flex-wrap:wrap;gap:8px;list-style:none;margin:4px 0 0;padding:0}
.tags li{font-size:13px;color:var(--dim);border:1px solid var(--line-strong);border-radius:5px;padding:2px 9px}
.project-links{display:flex;flex-wrap:wrap;gap:20px;margin-top:auto;padding-top:8px}
.project-links a{color:var(--text);font-weight:500;font-size:15px;text-underline-offset:5px;text-decoration-color:var(--signal)}
.project-links a:hover{color:var(--signal)}

/* Über mich: kurze Fakten und Werkzeugkasten */
.about{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:clamp(28px,5vw,72px);align-items:start}
.facts{margin:0;border-top:1px solid var(--line-strong)}
.facts div{display:grid;grid-template-columns:minmax(0,9em) minmax(0,1fr);gap:16px;padding:16px 0;border-bottom:1px solid var(--line)}
.facts dt{color:var(--muted);font-size:15px}
.facts dd{margin:0;font-weight:500}
.facts div:last-child dd{font-weight:400;color:var(--muted)}
.tools h3{font-size:18px;margin-bottom:14px}
.parts-list{width:100%;border-collapse:collapse;font-size:16px}
.parts-list thead th{text-align:left;font-weight:400;font-size:13px;color:var(--muted);padding:0 16px 12px 0;border-bottom:1px solid var(--line-strong)}
.parts-list td,.parts-list tbody th{padding:15px 16px 15px 0;border-bottom:1px solid var(--line);text-align:left;vertical-align:baseline}
.parts-list tbody th{font-weight:500}
.parts-list td:first-child{font:14px var(--mono);color:var(--dim);width:56px}
.parts-list td:last-child{color:var(--muted)}
.parts-list tbody tr{transition:background .2s}
.parts-list tbody tr:hover{background:rgba(150,180,235,.05)}
/* Assistent */
.assistant-section{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.15fr);gap:clamp(32px,6vw,96px);align-items:center}
.assistant-copy h2{font-size:clamp(34px,4vw,56px);line-height:1.08;letter-spacing:-.03em;margin-bottom:18px}
.assistant-copy p{color:var(--muted);max-width:28em}
.chat-panel{background:var(--panel);border:1px solid var(--line-strong);border-radius:12px;overflow:hidden}
.chat-top{display:flex;align-items:center;gap:12px;padding:16px 20px;border-bottom:1px solid var(--line)}
.chat-avatar{display:grid;place-items:center;width:38px;height:38px;border-radius:8px;border:1.5px solid var(--signal);color:var(--signal);font-weight:500}
.chat-top strong{display:block;font-weight:500;font-size:15px}
.chat-top small{display:block;font-size:13px;color:var(--muted)}
.chat-log{min-height:170px;max-height:380px;overflow-y:auto;padding:20px;scrollbar-width:thin;scrollbar-color:var(--line-strong) transparent}
.message{margin-bottom:16px;max-width:92%}
.message small{font-size:12px;color:var(--muted)}
.message p{margin-top:4px;white-space:pre-wrap;overflow-wrap:anywhere}
.message.user{margin-left:auto;background:rgba(111,164,255,.12);border:1px solid rgba(111,164,255,.25);border-radius:10px;padding:10px 14px}
.suggestions{display:flex;flex-wrap:wrap;gap:8px;padding:0 20px 16px}
.suggestions button{background:none;border:1px solid var(--line-strong);border-radius:20px;padding:7px 14px;font-size:14px;color:var(--dim)}
.suggestions button:hover{border-color:var(--signal);color:var(--text)}
.chat-error{color:#ffb4a2;font-size:14px;padding:0 20px 12px}
.chat-form{display:flex;gap:8px;margin:0 16px;padding:6px;border:1px solid var(--line-strong);border-radius:10px;background:var(--bg)}
.chat-form:focus-within{border-color:var(--signal)}
.chat-form input{flex:1;min-width:0;border:0;background:none;outline:none;padding:8px 10px;font-size:16px}
.chat-form input::placeholder{color:var(--muted)}
.chat-form button{border:0;border-radius:7px;background:var(--signal);color:var(--signal-ink);font-weight:500;padding:0 16px;font-size:15px}
.chat-note{font-size:13px;color:var(--muted);padding:12px 20px 16px}

/* Kontakt */
.contact{padding:clamp(80px,10vw,140px) var(--pad)}
.contact h2{font-size:clamp(44px,7vw,104px);line-height:1;letter-spacing:-.04em}
.contact>p{color:var(--muted);font-size:18px;margin-top:20px;max-width:32em}
.contact-mail{display:inline-block;margin-top:36px;font-size:clamp(22px,3.4vw,44px);font-weight:500;letter-spacing:-.02em;color:var(--text);text-decoration:underline;text-decoration-thickness:2px;text-underline-offset:10px;text-decoration-color:var(--signal);overflow-wrap:anywhere}
.contact-mail:hover{color:var(--signal)}
.contact-links{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px}
.contact-links a{text-decoration:none;border:1px solid var(--line-strong);border-radius:var(--radius);padding:10px 16px;color:var(--dim);font-size:15px}
.contact-links a:hover{border-color:var(--signal);color:var(--text)}

/* Fußzeile */
.site-footer{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px 32px;padding:28px var(--pad);border-top:1px solid var(--line);color:var(--muted);font-size:14px}
.site-footer nav{display:flex;gap:24px}
.site-footer a{text-decoration:none}
.site-footer a:hover{color:var(--text);text-decoration:underline;text-underline-offset:4px}
.load-status{position:fixed;left:16px;right:16px;bottom:16px;z-index:40;background:#3b2a20;color:#ffe2cc;border-radius:var(--radius);padding:14px 16px;font-size:15px}

/* ---------- Rechtstexte ---------- */
.legal{padding:clamp(48px,7vw,96px) var(--pad) clamp(72px,9vw,120px);max-width:calc(760px + 2 * clamp(20px,5vw,72px));margin:0 auto}
.legal h1{font-size:clamp(36px,5vw,56px);letter-spacing:-.03em;line-height:1.1;margin-bottom:28px}
.legal h2{font-size:22px;letter-spacing:-.01em;margin:40px 0 10px}
.legal p,.legal li{color:#c9d4e6}
.legal p+p{margin-top:12px}
.legal ul{padding-left:1.2em;margin:10px 0}
.legal address{font-style:normal;color:var(--text)}
.legal .todo{background:rgba(255,179,107,.18);color:#ffc98f;border-radius:4px;padding:0 6px}
.legal .back{display:inline-block;margin-bottom:28px;color:var(--dim)}
.legal .stand{margin-top:48px;color:var(--muted);font-size:14px}

/* ---------- Tablet ---------- */
@media (max-width:1024px){
  .hero{grid-template-columns:1fr;min-height:0}
  .hero-text{max-width:720px}
  .sheet-view{height:clamp(340px,62vw,520px)}
  .assistant-section{grid-template-columns:1fr}
  .about{grid-template-columns:1fr}
}

/* ---------- Handy ---------- */
@media (max-width:760px){
  body{font-size:16px}
  .site-header{height:64px}
  html{scroll-padding-top:72px}
  .menu-toggle{display:grid}
  .site-nav{display:none;position:absolute;top:64px;left:0;right:0;flex-direction:column;align-items:stretch;gap:2px;padding:12px var(--pad) 20px;background:var(--bg);border-bottom:1px solid var(--line)}
  .site-nav.open{display:flex}
  .site-nav a{padding:12px 10px;font-size:17px}
  .site-nav .nav-contact{margin:8px 0 0;text-align:center}
  .site-nav.legal-nav{display:flex;position:static;flex-direction:row;padding:0;background:none;border:0;gap:0}
  .site-nav.legal-nav a{font-size:15px;padding:8px}
  .hero{padding-top:32px;gap:36px}
  .hero-lead{font-size:17px}
  .hero-actions .button{flex:1 1 auto}
  .sheet-view{height:380px}
  .sheet-controls{right:12px;bottom:10px;gap:12px}
  .sheet-hint{display:none}
  .title-block{grid-template-columns:repeat(2,minmax(0,1fr))}
  .tb-wide{grid-column:span 2}
  .tb-cell:nth-child(5){order:1}
  .section-head{grid-template-columns:1fr;gap:14px}
  .projects{grid-template-columns:1fr}
  .project--lead{display:flex}
  .project--lead .project-visual{aspect-ratio:16/10;min-height:0;border-right:0;border-bottom:1px solid var(--line)}
  .parts-list{font-size:15px}
  .facts div{grid-template-columns:1fr;gap:2px;padding:12px 0}
  .parts-list td:first-child{width:40px}
  .parts-list td,.parts-list tbody th{padding:13px 10px 13px 0}
  .site-footer{flex-direction:column;align-items:flex-start}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{transition:none!important;animation:none!important}
}