/* ============================================================
   Amirreza Roodsaz — Lebenslauf & Portfolio (view-routed, interactive)
   Premium paper aesthetic · editorial serif + mono · slate accent.
   ============================================================ */

@font-face {
  font-family: 'Scribble Markers';
  src: url('../assets/scribble-markers.otf') format('opentype');
  font-weight: 400 700;
  font-display: swap;
}

:root {
  --paper:   #f4f0e7; --paper-2: #eee7d9; --card: #fbf8f1;
  --line:    #ded5c4; --line-2:  #cabfa9;
  --ink:     #221f1a; --dim: #6e655a; --faint: #9a9082;
  --accent:  #4C516D; --hot: #6b7197; --green: #3f7d4f; --blue: #35689e;

  --serif: 'Spectral', Georgia, 'Times New Roman', serif;
  --sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
  --mono: 'JetBrains Mono', 'SF Mono', ui-monospace, Menlo, Consolas, 'Liberation Mono', monospace;

  --grid: 44px; --wrap: 1140px; --pad: clamp(20px, 5vw, 64px);
  --head-h: 64px; --foot-h: 46px;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--paper); color: var(--ink);
  font-family: var(--sans); font-size: 17px; line-height: 1.62;
  overflow-x: hidden; -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility;
}
body.has-cursor, body.has-cursor a, body.has-cursor button, body.has-cursor [data-cursor] { cursor: none; }

/* vintage paper texture + subtle tint wash */
body::before {
  content: ""; position: fixed; inset: 0; z-index: -3; pointer-events: none;
  background-image: url('../assets/paper-texture.jpg');
  background-size: cover;
  background-position: center center;
  background-repeat: no-repeat;
}
body::after {
  content: ""; position: fixed; inset: 0; z-index: -2; pointer-events: none;
  background:
    radial-gradient(120% 80% at 78% -10%, rgba(76,81,109,0.05), transparent 55%),
    radial-gradient(120% 90% at 0% 110%, rgba(53,104,158,0.035), transparent 55%);
}
#bg-particles { position: fixed; inset: 0; z-index: -1; width: 100%; height: 100%; pointer-events: none; }

a { color: inherit; text-decoration: none; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
.skip-link { position: fixed; left: 12px; top: -100px; z-index: 400; background: var(--accent); color: #fff; font-family: var(--mono); font-size: 13px; padding: 8px 12px; transition: top .15s ease; }
.skip-link:focus { top: 12px; }

.kicker, .index, .nav a, .lang-toggle, .tag, .stat-l, .work-meta, .work-no,
.skill-col-title, .tl-type, .footer-note, .footer-progress, .footer-year, .seg,
.exp-dates, .edu-dates, .cert-year, .meta-k, .lvl, .lang-lvl, .loader-name,
.loader-count, .tl-replay, .cursor-label, .preview-label, .marquee { font-family: var(--mono); }

.index { font-size: 12px; letter-spacing: .18em; color: var(--accent); margin: 0 0 14px; }
.kicker { font-size: 13px; letter-spacing: .1em; color: var(--dim); margin: 0 0 22px; text-transform: uppercase; }

/* ---------- header (fixed) ---------- */
.site-header { position: fixed; top: 0; left: 0; right: 0; z-index: 200; height: var(--head-h);
  background: color-mix(in srgb, var(--paper) 82%, transparent);
  -webkit-backdrop-filter: blur(9px); backdrop-filter: blur(9px); border-bottom: 1px solid var(--line); }
.header-inner { max-width: var(--wrap); margin: 0 auto; padding: 0 var(--pad); height: 100%; display: flex; align-items: center; gap: 24px; }
.brand { display: flex; align-items: center; gap: 10px; }
.brand-mark { color: var(--accent); font-size: 13px; transition: transform .4s ease; }
.brand:hover .brand-mark { transform: rotate(90deg); }
.brand-name { font-family: var(--mono); font-weight: 600; letter-spacing: .22em; font-size: 14px; }
.nav { margin-left: auto; display: flex; gap: 24px; position: relative; }
.nav-underline { position: absolute; left: 0; bottom: -2px; height: 1.5px; width: 0; background: var(--accent); opacity: 0; transform: translateX(0); transition: transform .28s cubic-bezier(.4,0,.1,1), width .28s cubic-bezier(.4,0,.1,1), opacity .2s ease; pointer-events: none; }
.nav.has-slider a { transition: color .18s ease, transform .25s cubic-bezier(.2,.7,.2,1); }
.nav.has-slider a::after { display: none; }
.nav a { font-size: 13px; letter-spacing: .03em; color: var(--dim); position: relative; padding: 6px 0; transition: color .18s ease; }
.nav a::after { content: ""; position: absolute; left: 0; right: 100%; bottom: 0; height: 1.5px; background: var(--accent); transition: right .26s cubic-bezier(.4,0,.1,1); }
.nav a:hover, .nav a.is-current { color: var(--ink); }
.nav a:hover::after, .nav a.is-current::after { right: 0; }
.lang-toggle { display: inline-flex; align-items: center; gap: 6px; background: var(--card); color: var(--dim);
  border: 1px solid var(--line-2); font-size: 12px; letter-spacing: .08em; padding: 7px 11px; cursor: pointer; transition: border-color .18s ease; }
.lang-toggle:hover { border-color: var(--dim); }
.lang-toggle .seg.active { color: var(--accent); }
.lang-toggle .seg-sep { color: var(--line-2); }

/* ---------- view system (no-JS: all views readable; JS: one at a time) ---------- */
.views { position: relative; }
.view { display: block; position: relative; overflow: clip; }
body.js .view { display: none; }
body.js .view.is-active { display: block; }
.view-inner { max-width: var(--wrap); margin: 0 auto; padding: calc(var(--head-h) + clamp(36px, 7vh, 92px)) var(--pad) calc(var(--foot-h) + clamp(36px, 6vh, 72px)); min-height: 100vh; }
.view-head { max-width: 760px; margin-bottom: clamp(32px, 5vh, 56px); }
.view-title { font-family: var(--serif); font-weight: 600; font-size: clamp(40px, 8vw, 92px); line-height: 0.98; letter-spacing: -0.02em; margin: 0 0 16px; }
.view-lede { color: var(--dim); max-width: 58ch; margin: 0; font-size: clamp(15px, 1.8vw, 17px); }
.block-title { font-family: var(--serif); font-weight: 600; font-size: clamp(24px, 3.4vw, 34px); margin: clamp(40px, 6vh, 64px) 0 22px; letter-spacing: -0.01em; }

/* ---------- hero / profil ---------- */
.hero { display: flex; flex-direction: column; justify-content: center; }
#hero-3d { position: absolute; top: calc(var(--head-h) + 200px); right: -30px; width: min(60%, 690px); height: 660px; z-index: 0; pointer-events: none;
  -webkit-mask-image: radial-gradient(circle at 70% 40%, #000 35%, transparent 72%); mask-image: radial-gradient(circle at 70% 40%, #000 35%, transparent 72%); }
.hero-grid { display: grid; grid-template-columns: 1.5fr 0.9fr; gap: clamp(28px, 5vw, 72px); align-items: start; position: relative; z-index: 2; }
.headline { margin: 0 0 14px; line-height: 0.92; }
.headline-name { display: block; font-family: 'Scribble Markers', var(--serif); font-weight: 400; font-size: clamp(58px, 13vw, 150px); letter-spacing: 0; line-height: 1.02; color: var(--accent); }
.headline-legal { display: block; font-family: var(--mono); font-size: clamp(13px, 1.6vw, 16px); letter-spacing: .14em; color: var(--dim); margin-top: 14px; text-transform: uppercase; }
.role { font-family: var(--serif); font-style: italic; font-size: clamp(18px, 2.4vw, 25px); color: var(--ink); margin: 0 0 22px; }
.lede { color: var(--dim); max-width: 54ch; margin: 0 0 30px; font-size: clamp(16px, 1.8vw, 18px); }

.cta-row { display: flex; flex-wrap: wrap; gap: 14px; }
.btn { display: inline-flex; flex-direction: column; align-items: flex-start; gap: 2px; font-family: var(--mono); font-size: 14px; letter-spacing: .02em; padding: 14px 22px; border: 1px solid var(--line-2); will-change: transform; transition: background-color .2s ease, border-color .2s ease, color .2s ease; }
.btn-sub { font-size: 11px; letter-spacing: .05em; opacity: .8; }
.btn-primary { background: var(--accent); color: #fff8f2; border-color: var(--accent); font-weight: 600; }
.btn-primary:hover { background: color-mix(in srgb, var(--accent) 90%, #000); }
.btn-ghost { background: var(--card); color: var(--ink); flex-direction: row; align-items: center; justify-content: center; }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }

.hero-card { background: var(--card); border: 1px solid var(--line); padding: 6px 22px; box-shadow: 0 1px 0 var(--line), 0 16px 34px -24px rgba(60,40,20,0.45); }

/* open-to-work card */
.otw-card { padding: 0 22px 18px; }
.otw-head { display: flex; align-items: center; gap: 10px; padding: 16px 0 14px; border-bottom: 1px solid var(--line); }
.otw-title { font-family: var(--mono); font-size: 12px; letter-spacing: .14em; text-transform: uppercase; color: var(--green); }
.otw-pulse { width: 9px; height: 9px; border-radius: 50%; background: var(--green); position: relative; }
.otw-pulse::after { content: ""; position: absolute; inset: -5px; border-radius: 50%; border: 1px solid var(--green); animation: otwPulse 2s ease-out infinite; }
@keyframes otwPulse { 0% { transform: scale(0.6); opacity: 0.9; } 100% { transform: scale(1.6); opacity: 0; } }
.otw-cta { display: inline-block; margin-top: 16px; font-family: var(--mono); font-size: 13px; color: var(--accent); border-bottom: 1px solid transparent; transition: border-color .18s ease; }
.otw-cta:hover { border-color: var(--accent); }

/* meta column */
.hero-aside { display: flex; flex-direction: column; gap: 18px; width: 100%; max-width: 380px; }
/* portrait blended into the Profil background (parallax) */
.profil-bg { position: absolute; top: 0; left: 0; bottom: 0; width: min(56%, 680px); z-index: 0; pointer-events: none; overflow: hidden; will-change: transform; }
.profil-bg img { width: 100%; height: 100%; object-fit: cover; object-position: 50% 22%;
  opacity: 0.30; mix-blend-mode: multiply; filter: grayscale(0.4) contrast(1.04);
  -webkit-mask-image: radial-gradient(120% 90% at 22% 38%, #000 32%, transparent 80%);
          mask-image: radial-gradient(120% 90% at 22% 38%, #000 32%, transparent 80%); }
.meta-list { margin: 0; }
.meta-row { display: flex; justify-content: space-between; gap: 18px; align-items: baseline; padding: 14px 0; border-bottom: 1px solid var(--line); }
.meta-row:last-child { border-bottom: 0; }
.meta-k { font-size: 11px; letter-spacing: .1em; color: var(--faint); text-transform: uppercase; white-space: nowrap; }
.meta-v { font-family: var(--sans); font-size: 15px; color: var(--ink); text-align: right; }
.meta-v.stack { white-space: pre; line-height: 1.5; }   /* one entry per line, never wrap mid-entry */
.avail-dot { display: inline-block; width: 8px; height: 8px; border-radius: 50%; background: var(--green); margin-right: 8px; vertical-align: middle; }

/* marquee */
.marquee { overflow: hidden; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); margin: clamp(34px,5vh,56px) 0 0; padding: 14px 0; -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent); mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent); }
.marquee-track { display: inline-flex; align-items: center; gap: 26px; white-space: nowrap; animation: marquee 26s linear infinite; will-change: transform; }
.marquee-track span { font-size: 14px; letter-spacing: .08em; color: var(--dim); text-transform: uppercase; }
.marquee-track .m-dot { color: var(--accent); }
@keyframes marquee { to { transform: translateX(-50%); } }

.stat-strip { display: flex; flex-wrap: wrap; gap: 0; border: 1px solid var(--line); background: var(--card); margin: clamp(28px,4vh,44px) 0 0; }
.stat { flex: 1 1 160px; padding: 20px 22px; border-left: 1px solid var(--line); }
.stat:first-child { border-left: 0; }
.stat-v { font-family: var(--serif); font-size: clamp(26px, 3.4vw, 38px); font-weight: 600; letter-spacing: -0.01em; margin: 0; }
.stat-l { color: var(--dim); font-size: 11px; letter-spacing: .05em; margin: 6px 0 0; text-transform: uppercase; }

/* ---------- timeline ---------- */
.timeline-section { display: flex; flex-direction: column; }
/* full-bleed: timeline spans the whole page width, breaking out of the column */
.timeline-stage { position: relative; width: 100vw; margin-left: calc(50% - 50vw); height: clamp(460px, 64vh, 760px); display: none; }
.timeline-3d-active .timeline-stage { display: block; }
.timeline-3d-active .timeline-fallback { display: none; }
#timeline-canvas { display: block; width: 100%; height: 100%; }
.timeline-stage::before { content: ""; position: absolute; inset: 0; pointer-events: none; background: radial-gradient(ellipse 75% 70% at 50% 50%, color-mix(in srgb, var(--paper) 45%, transparent), transparent 72%); }
.tl-replay { position: absolute; right: 4px; bottom: 4px; z-index: 3; background: var(--card); border: 1px solid var(--line-2); color: var(--dim); font-size: 11px; letter-spacing: .06em; padding: 6px 10px; cursor: pointer; transition: color .18s ease, border-color .18s ease; }
.tl-replay:hover { color: var(--accent); border-color: var(--accent); }

.timeline-labels { position: absolute; inset: 0; pointer-events: none; }
.tl-label { position: absolute; transform: translate(-50%, -100%); font-family: var(--mono); font-size: 12px; letter-spacing: .01em; white-space: nowrap; color: var(--ink); padding: 3px 8px; border: 1px solid var(--line-2); background: color-mix(in srgb, var(--card) 92%, transparent); box-shadow: 0 6px 16px -12px rgba(60,40,20,0.5); opacity: 0; transition: opacity .3s ease; }
.tl-label .tl-label-years { color: var(--dim); margin-left: 8px; }
.tl-label.is-studium     { border-color: color-mix(in srgb, #3f7d4f 60%, var(--line-2)); }
.tl-label.is-einreise    { border-color: color-mix(in srgb, #b0843a 62%, var(--line-2)); }
.tl-label.is-publikation { border-color: color-mix(in srgb, #6a5d8a 62%, var(--line-2)); }
.tl-label.is-praktika    { border-color: color-mix(in srgb, #35689e 60%, var(--line-2)); }
.tl-label.is-beruf       { border-color: color-mix(in srgb, #a0594a 62%, var(--line-2)); }
.tl-label.is-jobsuche    { border-color: color-mix(in srgb, #33857d 62%, var(--line-2)); }
.tl-year-tick { position: absolute; transform: translate(-50%, 0); font-family: var(--mono); font-size: 11px; color: var(--faint); }
.tl-label.is-emph { border-color: var(--accent); color: var(--accent); box-shadow: 0 8px 22px -12px rgba(76,81,109,0.55); z-index: 4; }
.tl-label:hover { border-color: var(--accent); }
.tl-detail { position: absolute; left: 0; top: 0; z-index: 5; pointer-events: none; min-width: 180px; max-width: 260px; padding: 12px 14px; background: var(--card); border: 1px solid var(--line-2); border-left: 3px solid var(--accent); box-shadow: 0 18px 40px -22px rgba(60,40,20,0.6); opacity: 0; transition: opacity .2s ease; }
.tl-detail.is-on { opacity: 1; }
.tl-detail.is-studium     { border-left-color: #3f7d4f; }
.tl-detail.is-einreise    { border-left-color: #b0843a; }
.tl-detail.is-publikation { border-left-color: #6a5d8a; }
.tl-detail.is-praktika    { border-left-color: #35689e; }
.tl-detail.is-beruf       { border-left-color: #a0594a; }
.tl-detail.is-jobsuche    { border-left-color: #33857d; }
.tl-detail-title { font-family: var(--serif); font-weight: 600; font-size: 17px; line-height: 1.15; color: var(--ink); }
.tl-detail-meta { font-family: var(--mono); font-size: 11px; letter-spacing: .04em; color: var(--dim); margin-top: 6px; text-transform: uppercase; }

.timeline-fallback { list-style: none; margin: 34px 0 0; padding: 0; border-top: 1px solid var(--line); }
.tl-item { display: grid; grid-template-columns: 120px 1fr auto; align-items: center; gap: 18px; padding: 18px 0 18px 18px; border-bottom: 1px solid var(--line); border-left: 2px solid var(--line-2); }
.tl-item .tl-years { font-family: var(--mono); font-size: 13px; color: var(--dim); }
.tl-item .tl-name { font-family: var(--serif); font-size: clamp(18px, 2.6vw, 24px); font-weight: 500; }
.tl-item .tl-type { font-family: var(--mono); font-size: 11px; letter-spacing: .14em; color: var(--faint); }
.tl-studium { border-left-color: #3f7d4f; } .tl-einreise { border-left-color: #b0843a; }
.tl-publikation { border-left-color: #6a5d8a; } .tl-praktika { border-left-color: #35689e; }
.tl-beruf { border-left-color: #a0594a; } .tl-jobsuche { border-left-color: #33857d; }

/* ---------- experience ---------- */
.exp-list { border-top: 1px solid var(--line); }
.exp { display: grid; grid-template-columns: 220px 1fr; gap: 28px; padding: 30px 0; border-bottom: 1px solid var(--line); }
.exp-aside { display: flex; flex-direction: column; gap: 16px; }
.exp-dates { font-size: 13px; color: var(--dim); letter-spacing: .02em; }
/* company/institute logo — monogram fallback until a real logo is dropped in */
/* borderless, blended into the paper */
.exp-logo { display: block; width: 198px; height: 144px; text-decoration: none; opacity: .9; transition: opacity .18s ease, transform .18s ease; }
.exp-logo:hover { opacity: 1; transform: translateY(-1px); }
.exp-logo img { width: 100%; height: 100%; object-fit: contain; object-position: left center; mix-blend-mode: multiply; }
/* org name → hover popover with a link to the site */
.org-wrap { position: relative; display: inline-block; cursor: help; }
.org-name { border-bottom: 1px dotted color-mix(in srgb, var(--accent) 55%, transparent); }
.org-pop { position: absolute; left: 0; top: calc(100% + 8px); z-index: 20; min-width: 180px; white-space: nowrap;
  background: var(--card); border: 1px solid var(--line-2); padding: 10px 12px;
  box-shadow: 0 18px 40px -22px rgba(60,40,20,0.6); opacity: 0; transform: translateY(-4px);
  pointer-events: none; transition: opacity .18s ease, transform .18s ease; }
.org-wrap:hover .org-pop, .org-wrap:focus-within .org-pop { opacity: 1; transform: none; pointer-events: auto; }
.org-pop a { font-family: var(--mono); font-size: 13px; color: var(--accent); text-decoration: none; }
.org-pop a:hover { text-decoration: underline; }
.exp-role { font-family: var(--serif); font-weight: 600; font-size: clamp(20px, 2.8vw, 28px); margin: 0 0 4px; letter-spacing: -0.01em; }
.exp-org { color: var(--accent); font-size: 14px; margin: 0 0 14px; font-family: var(--mono); }
.exp-bullets { margin: 0; padding: 0; list-style: none; }
.exp-bullets li { position: relative; padding-left: 22px; margin-bottom: 9px; color: var(--ink); max-width: 64ch; }
.exp-bullets li::before { content: "—"; position: absolute; left: 0; color: var(--accent); }

/* ---------- work / projects ---------- */
.work-list { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line-2); }
.work-row { border-bottom: 1px solid var(--line); }
.work-link { display: grid; grid-template-columns: 52px 1fr auto; align-items: start; gap: 24px; padding: 30px 8px; position: relative; transition: padding-left .3s cubic-bezier(.4,0,.1,1), background-color .3s ease; }
.work-link::before { content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 0; background: var(--accent); transition: width .3s cubic-bezier(.4,0,.1,1); }
.work-row:hover .work-link { padding-left: 28px; background: color-mix(in srgb, var(--card) 70%, transparent); }
.work-row:hover .work-link::before { width: 3px; }
.work-no { color: var(--faint); font-size: 13px; padding-top: 8px; }
.work-title { display: block; font-family: var(--serif); font-size: clamp(22px, 3.6vw, 40px); font-weight: 600; letter-spacing: -0.018em; line-height: 1.04; transition: transform .3s cubic-bezier(.4,0,.1,1); }
.work-row:hover .work-title { color: var(--accent); transform: translateX(6px); }
.work-meta { display: block; color: var(--dim); font-size: 12px; letter-spacing: .04em; margin: 8px 0 10px; }
.work-desc { display: block; color: var(--dim); max-width: 64ch; font-size: 15px; }
.tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }
.tag { font-size: 11px; letter-spacing: .04em; color: var(--dim); border: 1px solid var(--line-2); padding: 4px 9px; background: var(--card); }
.work-row.flagship .tag { border-color: color-mix(in srgb, var(--accent) 45%, var(--line-2)); }
.work-arrow { align-self: center; color: var(--accent); font-size: 24px; transform: translateX(-8px); opacity: 0; transition: transform .3s cubic-bezier(.4,0,.1,1), opacity .3s ease; }
.work-row:hover .work-arrow { opacity: 1; transform: translateX(0); }

/* ---------- skills ---------- */
.skills-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.skill-col { background: var(--card); padding: 26px 24px; }
.skill-col-title { display: flex; align-items: center; gap: 10px; font-size: 12px; letter-spacing: .12em; margin: 0 0 18px; text-transform: uppercase; color: var(--ink); }
.dot { width: 9px; height: 9px; border-radius: 50%; display: inline-block; }
.dot-orange { background: var(--accent); } .dot-green { background: var(--green); } .dot-blue { background: var(--blue); }
.skill-items { list-style: none; margin: 0; padding: 0; }
.skill { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 12px 0; border-top: 1px solid var(--line); }
.skill:first-child { border-top: 0; }
.skill-name { font-size: 15px; }
.lvl { display: inline-flex; gap: 4px; }
.lvl i { width: 7px; height: 7px; border-radius: 50%; background: transparent; border: 1px solid var(--line-2); }
.lvl i.on { background: var(--accent); border-color: var(--accent); }

/* ---------- education / sub ---------- */
.edu-grid { display: grid; grid-template-columns: 1fr; gap: 1px; background: var(--line); border: 1px solid var(--line); }
.edu-card { background: var(--card); padding: 26px 26px; }
.edu-head { display: flex; align-items: baseline; justify-content: space-between; gap: 14px; }
.edu-deg { font-family: var(--serif); font-weight: 600; font-size: clamp(20px, 2.6vw, 26px); margin: 0; letter-spacing: -0.01em; }
.edu-dates { font-size: 13px; color: var(--dim); white-space: nowrap; }
.edu-org { color: var(--accent); font-family: var(--mono); font-size: 13px; margin: 4px 0 16px; }
.edu-meta { margin: 0; }
.edu-meta > div { padding: 10px 0; border-top: 1px solid var(--line); }
.edu-meta dt { font-family: var(--mono); font-size: 11px; letter-spacing: .08em; text-transform: uppercase; color: var(--faint); margin-bottom: 3px; }
.edu-meta dd { margin: 0; color: var(--ink); font-size: 15px; }
.sub-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; background: var(--line); border: 1px solid var(--line); margin-top: 22px; }
.sub-block { background: var(--card); padding: 26px 26px; }
.sub-grid > .sub-block:only-child { grid-column: 1 / -1; }
.sub-title { font-family: var(--serif); font-weight: 600; font-size: 20px; margin: 0 0 16px; }
.lang-list, .cert-list { list-style: none; margin: 0; padding: 0; }
.lang-list li { display: grid; grid-template-columns: 96px 1fr auto; align-items: center; gap: 14px; padding: 11px 0; border-top: 1px solid var(--line); }
.lang-list li:first-child { border-top: 0; }
.lang-name { font-size: 15px; }
.lang-bar { height: 6px; background: color-mix(in srgb, var(--ink) 8%, transparent); border-radius: 3px; overflow: hidden; }
.lang-bar i { display: block; height: 100%; background: var(--accent); }
.lang-lvl { font-size: 11px; color: var(--dim); white-space: nowrap; letter-spacing: .03em; }
.cert-list li { display: flex; justify-content: space-between; gap: 14px; align-items: baseline; padding: 11px 0; border-top: 1px solid var(--line); }
.cert-list li:first-child { border-top: 0; }
.cert-name { font-size: 15px; color: var(--ink); }
.cert-year { font-size: 12px; color: var(--dim); white-space: nowrap; }
.cert-n { font-style: normal; color: var(--dim); font-size: .78em; margin-left: 6px; }
/* full-width grouped certificate list */
.cert-note { font-size: 13px; color: var(--dim); margin: -8px 0 18px; }
.cert-groups { display: grid; grid-template-columns: repeat(2, 1fr); gap: 4px 28px; }
.cert-group { background: var(--card); border: 1px solid var(--line); padding: 18px 22px; }
.cert-group-title { font-size: 12px; letter-spacing: .07em; text-transform: uppercase; color: var(--muted); margin: 0 0 6px; }
.cert-group .cert-list li { padding: 9px 0; }
@media (max-width: 860px) { .cert-groups { grid-template-columns: 1fr; } }

/* ---------- publications (ISI articles) ---------- */
.block-lede { color: var(--dim); max-width: 60ch; margin: -8px 0 22px; font-size: 15px; }
.pub-list { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line-2); }
.pub { display: grid; grid-template-columns: auto 1fr auto; align-items: start; gap: 20px; padding: 22px 6px; border-bottom: 1px solid var(--line); transition: background-color .25s ease, padding-left .25s ease; }
.pub:hover { background: color-mix(in srgb, var(--card) 70%, transparent); padding-left: 14px; }
.pub-badge { font-family: var(--mono); font-size: 11px; letter-spacing: .12em; color: var(--accent); border: 1px solid color-mix(in srgb, var(--accent) 45%, var(--line-2)); padding: 4px 9px; margin-top: 4px; white-space: nowrap; }
.pub-body { min-width: 0; }
.pub-title { font-family: var(--serif); font-weight: 600; font-size: clamp(18px, 2.4vw, 24px); line-height: 1.2; margin: 0 0 7px; letter-spacing: -0.01em; }
.pub-authors { margin: 0 0 3px; font-size: 14px; color: var(--ink); }
.pub-venue { margin: 0; font-family: var(--mono); font-size: 12px; letter-spacing: .02em; color: var(--dim); }
.pub-doi { align-self: center; font-family: var(--mono); font-size: 13px; color: var(--ink); border: 1px solid var(--line-2); padding: 7px 12px; white-space: nowrap; transition: color .18s ease, border-color .18s ease; }
.pub-doi:hover { color: var(--accent); border-color: var(--accent); }

/* ---------- case pages ---------- */
/* blended photo behind a case page (clutter dissolves into the paper) */
.case-bg { position: absolute; top: 0; right: 0; bottom: 0; width: min(56%, 660px); z-index: 0; pointer-events: none;
  opacity: 0.16; mix-blend-mode: multiply; background-size: cover; background-position: center 22%;
  -webkit-mask-image: radial-gradient(120% 92% at 80% 42%, #000 28%, transparent 78%);
          mask-image: radial-gradient(120% 92% at 80% 42%, #000 28%, transparent 78%); }
.case-bg-emg { background-image: url('../assets/emg-bg.jpg'); }
.case-bg-shaft { background-image: url('../assets/shaft-bg.jpg'); }
.case-bg-ml { background-image: url('../assets/logo-ml.png?2'); background-size: min(46%, 380px) auto;
  background-repeat: no-repeat; background-position: right 9% top 22%; opacity: 0.16; -webkit-mask-image: none; mask-image: none; }
.case-bg-canbms { background-image: url('../assets/logo-canbms.png?2'); background-size: min(46%, 380px) auto;
  background-repeat: no-repeat; background-position: right 9% top 22%; opacity: 0.16; -webkit-mask-image: none; mask-image: none; }
.case-bg-rag { background-image: url('../assets/logo-rag.png?2'); background-size: min(46%, 380px) auto;
  background-repeat: no-repeat; background-position: right 9% top 22%; opacity: 0.16; -webkit-mask-image: none; mask-image: none; }
/* institute logo as a faint blended mark (Masterarbeit page — no public repo) */
.case-bg-hsb { background-image: url('../assets/logo-hsbochum.png'); background-size: min(64%, 480px) auto;
  background-repeat: no-repeat; background-position: right 8% top 20%; opacity: 0.15;
  -webkit-mask-image: none; mask-image: none; }
/* ComfyUI big + satellite tool marks (Runpod / Hugging Face / PyTorch) scattered */
.case-bg-comfy {
  background-image:
    url('../assets/logo-comfyui.png?1'),
    url('../assets/logo-runpod.png?1'),
    url('../assets/logo-hf.png?1'),
    url('../assets/logo-pytorch.png?1');
  background-repeat: no-repeat;
  background-size:
    min(42%, 320px) auto,
    104px auto,
    118px auto,
    96px auto;
  background-position:
    right 12% top 16%,
    left 10% top 30%,
    right 8% bottom 22%,
    left 22% bottom 12%;
  opacity: 0.15; -webkit-mask-image: none; mask-image: none; }
.case-bg-n8n { background-image: url('../assets/logo-n8n.png'); background-size: min(56%, 440px) auto;
  background-repeat: no-repeat; background-position: right 8% top 24%; opacity: 0.16; -webkit-mask-image: none; mask-image: none; }
.view-inner.case { position: relative; z-index: 1; }
/* lead paragraph + bullet list for the detailed (ComfyUI / n8n) case pages */
.case-lead { font-family: var(--serif); font-size: clamp(17px, 2.2vw, 21px); line-height: 1.5; color: var(--ink); margin: 0 0 26px; max-width: 60ch; }
.case-list { margin: 0; padding: 0; list-style: none; max-width: 62ch; }
.case-list li { position: relative; padding-left: 22px; margin-bottom: 10px; color: var(--ink); }
.case-list li::before { content: "—"; position: absolute; left: 0; color: var(--accent); }
.case-repo { display: inline-block; width: max-content; font-family: var(--mono); font-size: 12px; letter-spacing: .04em;
  color: var(--accent); text-decoration: none; border: 1px solid var(--line-2); padding: 9px 13px; transition: border-color .18s ease; }
.case-repo:hover { border-color: var(--accent); }
.case-repo-note { font-family: var(--mono); font-size: 11px; line-height: 1.45; color: var(--dim); margin: 0; }
.case-back { display: inline-block; font-family: var(--mono); font-size: 13px; color: var(--dim); margin-bottom: 22px; border-bottom: 1px solid transparent; transition: color .18s ease, border-color .18s ease; }
.case-back:hover { color: var(--accent); border-color: var(--accent); }
.case-title { margin: 6px 0 clamp(28px, 5vh, 48px); }
.case-grid { display: grid; grid-template-columns: 1.5fr 0.9fr; gap: clamp(28px, 5vw, 64px); align-items: start; }
.case-block { margin-bottom: 30px; max-width: 62ch; }
.case-h { font-family: var(--mono); font-size: 12px; letter-spacing: .14em; text-transform: uppercase; color: var(--accent); margin: 0 0 8px; }
.case-block p { margin: 0; color: var(--ink); font-size: 16px; }
.case-side { display: flex; flex-direction: column; gap: 18px; }
.case-metric { border: 1px solid var(--line-2); background: var(--card); padding: 22px; }
.case-metric-v { display: block; font-family: var(--serif); font-weight: 600; font-size: clamp(40px, 6vw, 64px); line-height: 1; letter-spacing: -0.02em; color: var(--accent); }
.case-metric-l { display: block; font-family: var(--mono); font-size: 11px; letter-spacing: .06em; text-transform: uppercase; color: var(--dim); margin-top: 10px; }
.case-facts { margin: 0; border: 1px solid var(--line); background: var(--card); }
.case-facts > div { padding: 14px 18px; border-top: 1px solid var(--line); }
.case-facts > div:first-child { border-top: 0; }
.case-facts dt { font-family: var(--mono); font-size: 11px; letter-spacing: .08em; text-transform: uppercase; color: var(--faint); margin-bottom: 4px; }
.case-facts dd { margin: 0; font-size: 14px; color: var(--ink); }
.case-next { display: flex; flex-direction: column; gap: 6px; margin-top: clamp(32px, 6vh, 56px); padding-top: 26px; border-top: 1px solid var(--line-2); width: max-content; max-width: 100%; }
.case-next-k { font-family: var(--mono); font-size: 11px; letter-spacing: .12em; text-transform: uppercase; color: var(--dim); }
.case-next-t { font-family: var(--serif); font-weight: 600; font-size: clamp(22px, 3.4vw, 34px); letter-spacing: -0.015em; color: var(--ink); transition: color .2s ease; }
.case-next:hover .case-next-t { color: var(--accent); }

/* ---------- contact ---------- */
.contact { display: flex; flex-direction: column; justify-content: center; position: relative; z-index: 1; }
.contact-bg { position: absolute; inset: 0; z-index: 0; pointer-events: none; opacity: 0.10;
  background-image: url('../assets/portrait-wide.png'); background-size: cover; background-position: center 30%;
  mix-blend-mode: multiply;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 35%, #000 70%, transparent);
          mask-image: linear-gradient(90deg, transparent, #000 35%, #000 70%, transparent); }
.contact-big { font-family: var(--serif); font-weight: 600; font-size: clamp(56px, 13vw, 168px); line-height: 0.92; letter-spacing: -0.03em; margin: 0 0 18px; }
.contact-hint { color: var(--muted); margin-top: 10px; font-size: 15px; }
.contact-row { display: flex; flex-wrap: wrap; align-items: center; gap: 28px; margin-top: 30px; }
.contact-row .btn-primary { flex-direction: row; align-items: center; }
.contact-links { list-style: none; display: flex; flex-wrap: wrap; gap: 24px; margin: 0; padding: 0; font-family: var(--mono); font-size: 14px; }
.contact-links a { color: var(--ink); border-bottom: 1px solid var(--line-2); padding-bottom: 2px; transition: color .18s ease, border-color .18s ease; }
.contact-links a:hover { color: var(--accent); border-color: var(--accent); }
.contact-loc { color: var(--dim); }

/* ---------- footer (fixed) ---------- */
.site-footer { position: fixed; left: 0; right: 0; bottom: 0; z-index: 200; height: var(--foot-h);
  display: flex; align-items: center; gap: 18px; padding: 0 var(--pad);
  background: color-mix(in srgb, var(--paper) 82%, transparent); -webkit-backdrop-filter: blur(9px); backdrop-filter: blur(9px); border-top: 1px solid var(--line); }
.footer-note { color: var(--dim); font-size: 11px; letter-spacing: .03em; }
.footer-visits { color: var(--faint); font-size: 11px; letter-spacing: .06em; font-family: var(--mono); }
.footer-progress { margin-left: auto; color: var(--accent); font-size: 12px; letter-spacing: .12em; }
.footer-year { color: var(--dim); font-size: 12px; }

/* ---------- loader ---------- */
.loader { position: fixed; inset: 0; z-index: 500; background: var(--paper); display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 22px; }
.loader.is-done { pointer-events: none; }
.loader-inner { display: flex; align-items: baseline; gap: 18px; }
.loader-name { font-weight: 600; letter-spacing: .26em; font-size: clamp(20px, 4vw, 30px); color: var(--ink); }
.loader-count { font-size: clamp(20px, 4vw, 30px); color: var(--accent); font-variant-numeric: tabular-nums; }
.loader-bar { width: min(280px, 60vw); height: 2px; background: var(--line); overflow: hidden; }
.loader-bar i { display: block; height: 100%; width: 0%; background: var(--accent); }

/* ---------- wipe transition ---------- */
.wipe { position: fixed; inset: 0; z-index: 350; background: var(--ink); transform: scaleY(0); transform-origin: bottom; display: flex; align-items: center; justify-content: center; pointer-events: none; }
.wipe-mark { color: var(--accent); font-size: 30px; opacity: 0; }

/* ---------- custom cursor ---------- */
.cursor { position: fixed; top: 0; left: 0; z-index: 9999; pointer-events: none; mix-blend-mode: normal; opacity: 0; }
.cursor.is-active { opacity: 1; }
.cursor.is-hidden { opacity: 0 !important; }
.cursor-dot { position: fixed; width: 6px; height: 6px; border-radius: 50%; background: var(--accent); transform: translate(-50%, -50%); }
.cursor-ring { position: fixed; width: 38px; height: 38px; border: 1px solid var(--accent); border-radius: 50%; transform: translate(-50%, -50%); display: flex; align-items: center; justify-content: center; transition: width .22s ease, height .22s ease, background-color .22s ease; }
.cursor.is-hover .cursor-ring { width: 64px; height: 64px; background: color-mix(in srgb, var(--accent) 12%, transparent); }
.cursor.is-hover .cursor-dot { opacity: 0; }
.cursor-label { font-size: 10px; letter-spacing: .1em; color: var(--accent); text-transform: uppercase; opacity: 0; transition: opacity .2s ease; }
.cursor.has-label .cursor-label { opacity: 1; }
.cursor.has-label .cursor-ring { width: 84px; height: 84px; background: color-mix(in srgb, var(--accent) 14%, transparent); }

/* ---------- floating project preview ---------- */
.preview { position: fixed; top: 0; left: 0; z-index: 300; width: 280px; height: 180px; pointer-events: none; opacity: 0; transform: translate(-50%, -50%) scale(0.92); transition: opacity .25s ease, transform .25s ease; border: 1px solid var(--line-2); background: var(--card); box-shadow: 0 24px 50px -28px rgba(60,40,20,0.6); overflow: hidden; }
.preview.is-on { opacity: 1; transform: translate(-50%, -50%) scale(1); }
.preview-img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; display: none; }
.preview.has-img .preview-img { display: block; }
.preview.fit-contain .preview-img { object-fit: contain; background: var(--card); padding: 6px; }
.preview.has-img .preview-stripes { display: none; }
.preview-stripes { position: absolute; inset: 0; background-image: repeating-linear-gradient(45deg, var(--paper-2), var(--paper-2) 9px, var(--card) 9px, var(--card) 18px); }
.preview-label { position: absolute; left: 12px; bottom: 10px; font-size: 11px; letter-spacing: .14em; color: var(--dim); background: color-mix(in srgb, var(--card) 80%, transparent); padding: 3px 7px; }

/* ---------- entrance helper (transform-only → content always visible) ---------- */
.view [data-rise] { will-change: transform; }

/* ---------- responsive ---------- */
@media (max-width: 920px) { .hero-grid { grid-template-columns: 1fr; } .hero-aside { max-width: 100%; flex-direction: row; align-items: stretch; gap: 16px; } .hero-aside .hero-card { flex: 1 1 auto; } .profil-bg { width: 100%; } .profil-bg img { opacity: 0.18; } #hero-3d { opacity: .4; } }
@media (max-width: 860px) { .skills-grid, .edu-grid, .sub-grid { grid-template-columns: 1fr; } .nav { gap: 14px; } }
@media (max-width: 680px) {
  body { font-size: 16px; }
  .nav { display: none; }
  #hero-3d, .timeline-stage { display: none !important; }
  .timeline-fallback { display: block !important; }
  .preview, .cursor { display: none !important; }
  body.has-cursor, body.has-cursor * { cursor: auto; }
  .exp { grid-template-columns: 1fr; gap: 8px; }
  .hero-aside { flex-direction: column; }
  .work-link { grid-template-columns: 36px 1fr; }
  .work-arrow { display: none; }
  .pub { grid-template-columns: 1fr; gap: 8px; }
  .pub-doi { justify-self: start; }
  .case-grid { grid-template-columns: 1fr; gap: 28px; }
  .tl-item { grid-template-columns: 1fr auto; }
  .tl-item .tl-years { grid-column: 1 / -1; }
  .stat { flex-basis: 50%; }
  .footer-note { display: none; }
}
@media (max-width: 380px) { :root { --pad: 16px; } .stat { flex-basis: 100%; border-left: 0; border-top: 1px solid var(--line); } .stat:first-child { border-top: 0; } }

/* ---------- reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .marquee-track { animation: none !important; }
  #bg-particles, #hero-3d, .cursor, .preview, .wipe { display: none !important; }
  .timeline-stage { display: none !important; }
  .timeline-fallback { display: block !important; }
  .loader { display: none !important; }
  body.has-cursor, body.has-cursor * { cursor: auto !important; }
  .view [data-rise] { transform: none !important; }
}