/* ===================================================================
   André Schaller — Cyber Security Engineering
   Shared stylesheet · Teal "techie" theme
   =================================================================== */
*{box-sizing:border-box; margin:0; padding:0;}
html{scroll-behavior:smooth;}

:root{
  --bg:#071318;
  --v:#14B8A6;
  --c:#38BDF8;
  --a3:#2DD4BF;
  --ink:#E6F4F2;
  --muted:#8FB0B4;
  --dim:#5C7B80;
  --line:rgba(255,255,255,0.09);
  --line-strong:rgba(255,255,255,0.16);
  --panel:rgba(255,255,255,0.028);
  --mono:'JetBrains Mono',monospace;
}

body{ background:var(--bg); font-family:'Inter',sans-serif; color:var(--ink); line-height:1.6; overflow-x:hidden; }
::selection{ background:var(--v); color:var(--bg); }
.wrap{ max-width:1080px; margin:0 auto; padding:0 40px; }
a:focus-visible, button:focus-visible{ outline:2px solid var(--c); outline-offset:3px; }

/* ---- Ambient background ---- */
.ambient{ position:fixed; inset:0; z-index:0; pointer-events:none; overflow:hidden; }
.ambient .blob{ position:absolute; border-radius:50%; filter:blur(110px); opacity:0.2; }
.ambient .b1{ width:640px; height:540px; background:var(--v); top:-220px; left:-160px; animation:drift1 28s ease-in-out infinite; }
.ambient .b2{ width:560px; height:460px; background:var(--c); top:-160px; right:-180px; animation:drift2 34s ease-in-out infinite; }
.ambient .b3{ width:520px; height:520px; background:var(--a3); top:62%; left:40%; opacity:0.1; animation:drift3 40s ease-in-out infinite; }
@keyframes drift1{ 0%,100%{ transform:translate(0,0); } 50%{ transform:translate(50px,40px); } }
@keyframes drift2{ 0%,100%{ transform:translate(0,0); } 50%{ transform:translate(-40px,60px); } }
@keyframes drift3{ 0%,100%{ transform:translate(0,0); } 50%{ transform:translate(40px,-50px); } }
.grid-tex{ position:fixed; inset:0; z-index:0; pointer-events:none;
  background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:56px 56px; opacity:0.35;
  mask-image:radial-gradient(ellipse 75% 60% at 50% 0%, #000 22%, transparent 78%);
  -webkit-mask-image:radial-gradient(ellipse 75% 60% at 50% 0%, #000 22%, transparent 78%); }

.page{ position:relative; z-index:1; min-height:100vh; display:flex; flex-direction:column; }
.page > main{ flex:1 0 auto; }

/* ---- Header ---- */
header{ position:sticky; top:0; z-index:50; transition:background 0.25s ease, border-color 0.25s ease; border-bottom:1px solid transparent; }
header.scrolled{ background:rgba(7,19,24,0.82); backdrop-filter:blur(12px); border-bottom-color:var(--line); }
.nav{ display:flex; justify-content:space-between; align-items:center; padding:20px 0; transition:padding 0.25s ease; }
header.scrolled .nav{ padding:13px 0; }
.logo{ display:flex; gap:11px; align-items:center; font-family:'Sora','Inter',system-ui,sans-serif; font-weight:600; font-size:16px; color:var(--ink); text-decoration:none; }
.logo .mark{ display:block; flex-shrink:0; width:30px; height:30px; transition:transform 0.3s ease; }
.logo:hover .mark{ transform:rotate(-8deg); }
.logo .wm{ white-space:nowrap; letter-spacing:-0.005em; }
.logo .wm .light{ color:var(--muted); font-weight:400; }
.nav ul{ list-style:none; display:flex; gap:28px; }
.nav a{ color:var(--muted); text-decoration:none; font-size:13.5px; transition:color 0.2s; position:relative; }
.nav a::after{ content:""; position:absolute; left:0; bottom:-5px; width:0; height:1.5px; background:var(--v); transition:width 0.25s ease; }
.nav a:hover{ color:var(--ink); } .nav a:hover::after, .nav a.active::after{ width:100%; } .nav a.active{ color:var(--ink); }
.pill{ border:1px solid var(--line-strong); background:var(--panel); border-radius:99px; padding:10px 20px; color:var(--ink); text-decoration:none; font-size:13px; transition:border-color 0.2s, background 0.2s; }
.pill:hover{ border-color:var(--v); background:rgba(20,184,166,0.08); }

/* ---- Reveal ---- */
.reveal{ opacity:0; transform:translateY(18px); transition:opacity 0.7s ease, transform 0.7s ease; }
.reveal.in{ opacity:1; transform:translateY(0); }

/* ---- Generic hero / page header ---- */
.hero{ padding:70px 0 60px; }
.hero-grid{ display:grid; grid-template-columns:minmax(0,1.05fr) minmax(0,0.95fr); gap:52px; align-items:center; }
.hero-grid > *{ min-width:0; }
.chip{ display:inline-flex; align-items:center; gap:8px; border:1px solid var(--line-strong); background:var(--panel); border-radius:99px; padding:7px 16px; font-family:var(--mono); font-size:11.5px; color:var(--muted); margin-bottom:26px; letter-spacing:0.02em; }
.chip .s{ width:6px; height:6px; border-radius:50%; background:var(--v); animation:pulse 2.6s ease-in-out infinite; }
@keyframes pulse{ 0%,100%{ opacity:1; } 50%{ opacity:0.35; } }
.hero h1{ font-family:'Sora','Inter',system-ui,sans-serif; font-weight:700; font-size:52px; line-height:1.08; letter-spacing:-0.025em; margin-bottom:20px; }
.hero h1 .grad{ background:linear-gradient(115deg,var(--v),var(--c)); -webkit-background-clip:text; background-clip:text; -webkit-text-fill-color:transparent; }
.hero p{ color:var(--muted); font-size:16.5px; max-width:480px; margin-bottom:26px; }

/* page-title block for subpages */
.pagehead{ padding:64px 0 30px; }
.pagehead .k{ font-family:var(--mono); font-size:11px; letter-spacing:0.12em; text-transform:uppercase; color:var(--v); margin-bottom:16px; display:flex; align-items:center; gap:10px; }
.pagehead .k::before{ content:""; width:20px; height:1px; background:var(--v); }
.pagehead h1{ font-family:'Sora','Inter',system-ui,sans-serif; font-weight:700; font-size:46px; line-height:1.08; letter-spacing:-0.025em; margin-bottom:16px; }
.pagehead p{ color:var(--muted); font-size:16.5px; max-width:600px; }

/* buttons */
.cta-row{ display:flex; gap:14px; flex-wrap:wrap; }
.cta{ display:inline-flex; gap:9px; align-items:center; background:linear-gradient(115deg,var(--v),var(--c)); color:#04121a; text-decoration:none; font-weight:600; font-size:14.5px; padding:14px 26px; border-radius:12px; transition:transform 0.18s ease, filter 0.18s ease; cursor:pointer; border:none; font-family:'Inter',sans-serif; }
.cta .arr{ transition:transform 0.2s ease; }
.cta:hover{ transform:translateY(-2px); filter:brightness(1.06); } .cta:hover .arr{ transform:translateX(4px); }
.cta.ghost{ background:transparent; color:var(--ink); border:1px solid var(--line-strong); }
.cta.ghost:hover{ border-color:var(--v); transform:translateY(-2px); }
.cta[disabled]{ opacity:0.6; cursor:not-allowed; transform:none; filter:none; }

/* ---- Hero: entropy field with emerging commands ---- */
.field{ font-family:var(--mono); font-size:11px; line-height:1.95; white-space:nowrap;
        user-select:none; -webkit-user-select:none; }
.field .r{ display:block; }
.field b{ display:inline-block; width:1ch; font-weight:400; color:var(--dim); opacity:.42;
          transition:opacity .55s ease, color .2s ease; }
.field b.flick{ opacity:.85; transition:opacity .18s ease; }
.field b.ghost{ opacity:.07; }              /* Rauschen zieht sich zurück */
.field b.lit{ color:var(--v); opacity:1; transition:opacity .2s ease; }
.field b.prompt{ color:var(--c); opacity:1; transition:opacity .2s ease; }
.field b.cur{ color:var(--v); opacity:1; animation:cur 1s steps(1) infinite; }
@keyframes cur{ 50%{ opacity:0; } }
.field-cap{ font-family:var(--mono); font-size:9.5px; color:var(--dim); letter-spacing:.07em;
            margin-top:14px; opacity:.75; }

.trust{ display:flex; gap:28px; flex-wrap:wrap; padding:34px 0 0; }
.trust div{ font-family:var(--mono); font-size:11px; color:var(--muted); letter-spacing:0.03em; display:flex; align-items:center; gap:8px; }
.trust div::before{ content:""; width:5px; height:5px; border-radius:50%; background:var(--v); }

/* ---- Section head ---- */
.sec{ padding:74px 0; }
.sh{ margin-bottom:44px; }
.sh.center{ text-align:center; } .sh.center .k{ justify-content:center; }
.sh .k{ font-family:var(--mono); font-size:11px; letter-spacing:0.12em; text-transform:uppercase; color:var(--v); margin-bottom:14px; display:flex; align-items:center; gap:10px; }
.sh .k::before{ content:""; width:20px; height:1px; background:var(--v); }
.sh h2{ font-family:'Sora','Inter',system-ui,sans-serif; font-weight:700; font-size:33px; letter-spacing:-0.02em; }
.sh p{ color:var(--muted); margin-top:10px; max-width:560px; }

/* ---- Cards ---- */
.cards{ display:grid; grid-template-columns:repeat(3,1fr); gap:18px; }
.cards.two{ grid-template-columns:repeat(2,1fr); }
.card{ position:relative; background:var(--panel); border:1px solid var(--line); border-radius:16px; padding:30px; overflow:hidden; transition:transform 0.28s ease, border-color 0.28s ease; }
.card:hover{ transform:translateY(-4px); border-color:var(--line-strong); }
.card .scan{ position:absolute; left:0; right:0; top:0; height:1px; background:linear-gradient(90deg,transparent,var(--v),transparent); opacity:0; transform:translateY(0); }
.card:hover .scan{ animation:scan 1.4s ease-in-out; }
@keyframes scan{ 0%{ opacity:0; top:0; } 15%{ opacity:0.9; } 85%{ opacity:0.9; } 100%{ opacity:0; top:100%; } }
.card .spot{ position:absolute; width:300px; height:300px; background:radial-gradient(circle, rgba(20,184,166,0.14), transparent 62%); opacity:0; transition:opacity 0.3s ease; pointer-events:none; transform:translate(-50%,-50%); }
.card:hover .spot{ opacity:1; }
.card .idx{ position:absolute; top:18px; right:18px; font-family:var(--mono); font-size:10px; color:var(--dim); letter-spacing:0.05em; }
.card .ic{ position:relative; width:46px; height:46px; border-radius:12px; background:rgba(20,184,166,0.1); border:1px solid var(--line); display:flex; align-items:center; justify-content:center; color:var(--v); margin-bottom:20px; transition:background 0.25s ease; }
.card:hover .ic{ background:rgba(20,184,166,0.18); }
.card h3{ position:relative; font-family:'Sora','Inter',system-ui,sans-serif; font-weight:600; font-size:18px; margin-bottom:10px; }
.card p{ position:relative; color:var(--muted); font-size:14px; }
.card ul{ position:relative; list-style:none; margin-top:14px; display:flex; flex-direction:column; gap:8px; }
.card ul li{ color:var(--muted); font-size:13.5px; padding-left:18px; position:relative; }
.card ul li::before{ content:"›"; position:absolute; left:0; color:var(--v); }

/* ---- Steps ---- */
.steps{ position:relative; display:grid; grid-template-columns:repeat(4,1fr); gap:16px; }
.steps::before{ content:""; position:absolute; top:39px; left:12%; right:12%; height:1px; background:linear-gradient(90deg,transparent,var(--line-strong),transparent); }
.step{ position:relative; background:var(--panel); border:1px solid var(--line); border-radius:14px; padding:24px; transition:border-color 0.25s ease, transform 0.25s ease; }
.step:hover{ border-color:var(--line-strong); transform:translateY(-3px); }
.step .n{ width:32px; height:32px; border-radius:9px; background:rgba(20,184,166,0.12); border:1px solid var(--line-strong); color:var(--v); font-family:var(--mono); font-weight:600; font-size:12px; display:flex; align-items:center; justify-content:center; margin-bottom:16px; }
.step h4{ font-family:'Sora','Inter',system-ui,sans-serif; font-weight:600; font-size:16px; margin-bottom:7px; }
.step p{ color:var(--muted); font-size:13.5px; }

/* ---- Stats ---- */
.stats{ display:grid; grid-template-columns:repeat(auto-fit,minmax(230px,1fr)); gap:18px; align-items:stretch; }
.stat{ position:relative; padding:30px 24px; border:1px solid var(--line); border-radius:14px; background:var(--panel); overflow:hidden; }
.stat::before{ content:""; position:absolute; top:0; left:0; width:22px; height:22px; border-top:1.5px solid var(--v); border-left:1.5px solid var(--v); opacity:0.5; }
.stat .v{ font-family:'Sora','Inter',system-ui,sans-serif; font-weight:700; font-size:38px; background:linear-gradient(120deg,var(--v),var(--c)); -webkit-background-clip:text; background-clip:text; -webkit-text-fill-color:transparent; }
.stat .l{ color:var(--muted); font-size:13px; margin-top:6px; }
.stat .meta{ font-family:var(--mono); font-size:9.5px; color:var(--dim); margin-top:12px; letter-spacing:0.04em; }

/* ---- Ticker ---- */
.ticker{ border-top:1px solid var(--line); border-bottom:1px solid var(--line); overflow:hidden; white-space:nowrap; padding:11px 0; margin-top:40px; background:rgba(255,255,255,0.015); }
.ticker .track{ display:inline-block; animation:scroll 60s linear infinite; font-family:var(--mono); font-size:11px; color:var(--dim); letter-spacing:0.05em; }
.ticker .track span{ margin:0 22px; }
.ticker .track b{ color:var(--v); font-weight:500; }
@keyframes scroll{ to{ transform:translateX(-50%); } }

/* ---- Contact / forms ---- */
.contact{ position:relative; margin:0 0 20px; border-radius:20px; padding:44px; overflow:hidden; background:var(--panel); border:1px solid var(--line); }
.contact::before{ content:""; position:absolute; left:0; right:0; top:0; height:1px; background:linear-gradient(90deg,transparent,var(--v),var(--c),transparent); }
.contact .tag{ font-family:var(--mono); font-size:10.5px; color:var(--dim); letter-spacing:0.1em; text-transform:uppercase; margin-bottom:18px; }
.contact h2{ font-family:'Sora','Inter',system-ui,sans-serif; font-weight:700; font-size:30px; letter-spacing:-0.02em; margin-bottom:14px; }
.contact p{ color:var(--muted); max-width:520px; margin:0 0 24px; }

.field{ display:flex; flex-direction:column; gap:7px; margin-bottom:18px; min-width:0; }
.field label{ font-family:var(--mono); font-size:11.5px; color:var(--muted); letter-spacing:0.04em; }
.field label .req{ color:var(--v); }
.field input, .field textarea{
  width:100%; max-width:100%; min-width:0; display:block;
  background:rgba(0,0,0,0.25); border:1px solid var(--line-strong); border-radius:10px;
  padding:13px 15px; color:var(--ink); font-family:'Inter',sans-serif; font-size:14.5px; transition:border-color 0.2s ease, background 0.2s ease;
}
.field input:focus, .field textarea:focus{ outline:none; border-color:var(--v); background:rgba(0,0,0,0.35); }
.field textarea{ resize:vertical; min-height:130px; }
.form-row{ display:grid; grid-template-columns:minmax(0,1fr) minmax(0,1fr); gap:18px; }
.form-row > *{ min-width:0; }
#contact-form{ max-width:100%; }
.form-note{ font-size:12px; color:var(--dim); margin-top:6px; }
.form-status{ margin-top:16px; font-family:var(--mono); font-size:12.5px; min-height:18px; }
.form-status a{ color:var(--v); text-decoration:underline; }
.form-status.ok{ color:var(--v); } .form-status.err{ color:#F87171; }

/* contact detail list */
.contact-links{ display:flex; flex-direction:column; gap:2px; }
.contact-links a{ display:flex; justify-content:space-between; align-items:center; gap:14px; padding:16px 0; border-bottom:1px solid var(--line); text-decoration:none; color:var(--ink); font-family:var(--mono); font-size:13.5px; transition:color 0.2s ease, padding-left 0.2s ease; }
.contact-links a:first-child{ border-top:1px solid var(--line); }
.contact-links a:hover{ color:var(--v); padding-left:8px; }
.contact-links a .lbl{ color:var(--ink); font-size:13.5px; letter-spacing:0.04em; }
.contact-links a .val{ display:flex; align-items:center; gap:10px; }
.contact-links a .arr{ color:var(--v); }

/* PGP block */
.pgp{ margin-top:22px; border:1px solid var(--line); border-radius:14px; background:rgba(0,0,0,0.2); overflow:hidden; }
.pgp .pgp-head{ display:flex; justify-content:space-between; align-items:center; padding:12px 16px; border-bottom:1px solid var(--line); font-family:var(--mono); font-size:10.5px; color:var(--dim); letter-spacing:0.06em; }
.pgp .pgp-head .fp{ color:var(--v); }
.pgp pre{ padding:16px; font-family:var(--mono); font-size:11px; color:var(--muted); overflow-x:auto; line-height:1.5; }
.pgp .pgp-actions{ display:flex; gap:10px; padding:0 16px 16px; }
.pgp .pgp-actions a{ font-family:var(--mono); font-size:11.5px; color:var(--ink); text-decoration:none; border:1px solid var(--line-strong); border-radius:8px; padding:8px 14px; transition:border-color 0.2s; }
.pgp .pgp-actions a:hover{ border-color:var(--v); color:var(--v); }

/* ---- Prose (About, legal pages) ---- */
.prose{ max-width:760px; }
.prose h2{ font-family:'Sora','Inter',system-ui,sans-serif; font-weight:600; font-size:22px; margin:38px 0 14px; letter-spacing:-0.01em; }
.prose h3{ font-family:'Sora','Inter',system-ui,sans-serif; font-weight:600; font-size:17px; margin:26px 0 10px; }
.prose p{ color:var(--muted); font-size:15px; margin-bottom:14px; }
.prose ul{ color:var(--muted); font-size:15px; margin:0 0 16px 0; padding-left:22px; }
.prose ul li{ margin-bottom:8px; }
.prose a{ color:var(--v); text-decoration:none; border-bottom:1px solid var(--line-strong); }
.prose a:hover{ border-color:var(--v); }
.prose .placeholder{ color:var(--dim); font-style:italic; }
.prose .lead{ font-size:17px; color:var(--ink); margin-bottom:24px; }

/* about profile */
.profile{ display:grid; grid-template-columns:260px 1fr; gap:44px; align-items:start; }
.portrait{ aspect-ratio:4/5; border:1px solid var(--line-strong); border-radius:16px; background:linear-gradient(160deg,rgba(20,184,166,0.08),rgba(56,189,248,0.04)); display:flex; align-items:center; justify-content:center; color:var(--dim); font-family:var(--mono); font-size:11px; text-align:center; padding:20px; position:relative; overflow:hidden; }
.portrait::before{ content:""; position:absolute; top:10px; left:10px; width:16px; height:16px; border-top:1.5px solid var(--v); border-left:1.5px solid var(--v); opacity:0.6; z-index:2; }
.portrait::after{ content:""; position:absolute; bottom:10px; right:10px; width:16px; height:16px; border-bottom:1.5px solid var(--v); border-right:1.5px solid var(--v); opacity:0.6; z-index:2; }
/* Landscape source in a 4:5 frame: crop horizontally, keep full height. */
.portrait img{ position:absolute; inset:0; z-index:1; width:100%; height:100%; object-fit:cover; object-position:center; display:block; }
.badge-row{ display:flex; gap:10px; flex-wrap:wrap; margin-top:22px; }
.badge{ font-family:var(--mono); font-size:11px; color:var(--ink); border:1px solid var(--line-strong); border-radius:8px; padding:8px 12px; letter-spacing:0.02em; }

/* publications */
.pubs{ display:flex; flex-direction:column; gap:2px; margin-top:8px; }
.pub{ display:grid; grid-template-columns:70px 1fr; gap:20px; padding:22px 0; border-top:1px solid var(--line); align-items:baseline; }
.pub:last-child{ border-bottom:1px solid var(--line); }
.pub .year{ font-family:var(--mono); font-size:13px; color:var(--v); }
.pub h4{ font-family:'Sora','Inter',system-ui,sans-serif; font-weight:600; font-size:16px; margin-bottom:6px; line-height:1.35; }
.pub h4 a{ color:var(--ink); text-decoration:none; border-bottom:1px solid transparent; transition:color 0.2s ease, border-color 0.2s ease; }
.pub h4 a:hover{ color:var(--v); border-bottom-color:var(--v); }
.pub .me{ color:var(--ink); font-weight:600; }
.pub p{ color:var(--muted); font-size:13.5px; }
.pub .venue{ font-family:var(--mono); font-size:11px; color:var(--dim); margin-top:6px; }

/* ---- Footer ---- */
footer{ border-top:1px solid var(--line); flex-shrink:0; }
.foot{ display:flex; justify-content:space-between; align-items:center; padding:26px 0; color:var(--muted); font-size:12.5px; flex-wrap:wrap; gap:12px; }
.foot .mono{ font-family:var(--mono); font-size:11px; color:var(--dim); }
.foot nav{ display:flex; gap:18px; flex-wrap:wrap; }
.foot a{ color:var(--muted); text-decoration:none; }
.foot a:hover{ color:var(--ink); }

@media (max-width:860px){
  .hero-grid{ grid-template-columns:1fr; gap:36px; } .hero h1{ font-size:38px; } .field{ font-size:8.5px; }
  .pagehead h1{ font-size:34px; }
  .cards, .cards.two, .steps, .stats{ grid-template-columns:1fr; } .steps::before{ display:none; }
  .nav ul{ display:none; } .contact{ padding:28px; } .form-row{ grid-template-columns:1fr; }
  .profile{ grid-template-columns:1fr; } .portrait{ max-width:260px; }
}
@media (prefers-reduced-motion: reduce){
  *{ animation:none !important; }
  .reveal{ opacity:1; transform:none; transition:none; }
  .typed .cur{ display:none; }
}

/* ---- Utility classes (replace inline styles so the CSP needs no 'unsafe-inline') ---- */
.pt-0{ padding-top:0; }
.pt-20{ padding-top:20px; }
.mt-12{ margin-top:12px; }
.mt-20{ margin-top:20px; }
.mt-24{ margin-top:24px; }
.mt-30{ margin-top:30px; }
.mt-40{ margin-top:40px; }
.mx-auto{ margin-left:auto; margin-right:auto; }
.ta-c{ text-align:center; }
.jc-c{ justify-content:center; }
.ai-start{ align-items:start; }
.fs-24{ font-size:24px; }
.accent{ color:var(--v); }
.visually-hidden{ position:absolute; left:-9999px; }

/* Phone number: split across elements so the raw HTML contains no continuous
   number for naive scrapers to match. Visible without JavaScript, read in the
   correct order by screen readers, and copied correctly. */
.tel span + span{ margin-left:.34em; }