/* /style.css */
:root {
  /* Dark default */
  --bg: #0b0c10;
  --bg-elev: #12131a;
  --glass: rgba(20,22,30,0.72);
  --border: rgba(255,255,255,0.10);
  --text: #f4f6fb;
  --text-muted: #c6cbe0;
  --muted-2: #b7bdd4;

  --primary: #8a2be2;
  --primary-rgb: 138,43,226;
  --accent: #00e3ff;

  --radius: 16px;
  --shadow: 0 10px 28px rgba(0,0,0,0.30);
  --shadow-soft: 0 4px 18px rgba(0,0,0,0.22);

  --font-sans: 'Inter', system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji","Segoe UI Emoji";
  --font-mono: 'Source Code Pro', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono","Courier New", monospace;
}

/* Light theme */
:root.light {
  --bg: #f7f9fc;
  --bg-elev: #ffffff;
  --glass: rgba(255,255,255,0.92);
  --border: rgba(0,0,0,0.08);
  --text: #0c1222;
  --text-muted: #485270;
  --muted-2: #606c8a;

  --primary: #6b34ff;
  --primary-rgb: 107,52,255;
  --accent: #0066ff;

  --shadow: 0 10px 24px rgba(0,0,0,0.10);
  --shadow-soft: 0 4px 14px rgba(0,0,0,0.08);
}

/* Base – artefaktfreier Hintergrund */
* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  color: var(--text);
  background: var(--bg); /* Keine Radial-Gradients mehr -> keine Streifen */
  font-family: var(--font-sans);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* Typografie */
h1,h2,h3,h4,h5,h6 { color: var(--text); }
.fw-extra { font-weight: 800; letter-spacing: -0.02em; }
.lead { color: var(--muted-2); }
.text-muted-2 { color: var(--muted-2) !important; }
.clamp-hero { line-height: 1.15; }
p, li { color: var(--text); } /* Sicherstellen, dass Card-Text im Dark Mode hell genug ist */

/* Accessibility */
.skip-link {
  position:absolute; left:-9999px; top:auto; width:1px; height:1px; overflow:hidden;
}
.skip-link:focus {
  position: fixed; left: 16px; top: 16px; width: auto; height: auto; padding: 8px 12px;
  background: var(--bg-elev); color: var(--text); border-radius: 8px; z-index: 10000;
  border: 1px solid var(--border); outline: 2px solid var(--accent);
}
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 1000;
  backdrop-filter: saturate(150%) blur(8px);
  background: linear-gradient(to bottom, rgba(0,0,0,0.38), rgba(0,0,0,0.12), transparent);
  border-bottom: 1px solid var(--border);
}
.brand-mark {
  display: inline-grid; place-items:center;
  width: 36px; height: 36px; border-radius: 10px;
  background: linear-gradient(135deg, rgba(var(--primary-rgb),0.95), rgba(0,227,255,0.75));
  color: #fff; font-family: var(--font-mono); font-weight: 700;
  box-shadow: var(--shadow-soft);
}
.brand-text { color: var(--text); }

/* Dezente Schimmer-Animation nur auf dem kleinen Badge */
.shimmer { position: relative; overflow: hidden; }
.shimmer::after {
  content:""; position:absolute; inset:0; transform: translateX(-120%);
  background: linear-gradient(110deg, transparent 30%, rgba(255,255,255,.35) 50%, transparent 70%);
  animation: shimmer 4.5s ease-in-out infinite;
}
@keyframes shimmer {
  0% { transform: translateX(-120%); }
  45% { transform: translateX(130%); }
  100% { transform: translateX(130%); }
}

/* Navigation */
.primary-nav .nav-link {
  color: var(--text-muted);
  position: relative;
  padding: .25rem .5rem;
}
.primary-nav .nav-link:hover,
.primary-nav .nav-link:focus { color: var(--text); }
.primary-nav .nav-link::after {
  content:""; position:absolute; left:0; bottom:-4px;
  width:0; height:2px; background: linear-gradient(90deg, var(--primary), var(--accent));
  transition: width .25s ease;
}
.primary-nav .nav-link:hover::after,
.primary-nav .nav-link:focus::after { width:100%; }

/* Buttons */
.btn-cta {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff; border: none; border-radius: 12px; padding: 10px 16px;
  box-shadow: var(--shadow-soft); transition: transform .15s ease, filter .2s ease;
}
.btn-cta:hover { filter: brightness(1.05); }
.btn-ghost {
  background: transparent; border: 1px solid var(--border); color: var(--text);
  border-radius: 12px; padding: 10px 16px; transition: transform .15s ease, border-color .2s ease;
}
.btn-ghost:hover { border-color: var(--primary); color: var(--text); }
.btn-toggle {
  border: 1px solid var(--border); background: var(--bg-elev); color: var(--text);
  border-radius: 10px; padding: 8px 10px; line-height: 1;
}
.lift:hover { transform: translateY(-2px); }

/* Sektionen */
.section-hero { padding: clamp(48px, 8vw, 96px) 0; }
.section-card { padding: clamp(40px, 6vw, 72px) 0; }

.section-head { margin-bottom: 1.25rem; }
.section-title { font-weight: 800; letter-spacing: -0.02em; }
.underline { position: relative; display:inline-block; }
.underline::after {
  content:""; position:absolute; left:0; bottom:-6px; height:3px; width:100%;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  border-radius: 999px; transform-origin: left; transform: scaleX(.65);
  transition: transform .3s ease;
}
.section-head:hover .underline::after { transform: scaleX(1); }
.section-kicker { color: var(--text-muted); margin-top: .25rem; }

/* Hero */
.hero-avatar {
  border-radius: 999px;
  border: 3px solid rgba(var(--primary-rgb),0.6);
  box-shadow: 0 0 0 6px rgba(var(--primary-rgb),0.12), var(--shadow);
  max-width: 320px; width: 100%; height: auto;
}
.float-slow { animation: float 6s ease-in-out infinite; }
@keyframes float { 0%,100% { transform: translateY(0px); } 50% { transform: translateY(-6px); } }

/* Cards / Glass – klare Lesbarkeit in beiden Themes */
.card.glass {
  background: var(--glass);
  backdrop-filter: saturate(120%) blur(8px);
  -webkit-backdrop-filter: saturate(120%) blur(8px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-soft);
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.card.glass:hover { transform: translateY(-3px); border-color: rgba(var(--primary-rgb), .35); }
.card.glass .card-body { padding: clamp(18px, 3.5vw, 28px); }
.card.glass p, .card.glass li, .card.glass h3 { color: var(--text); } /* explizit */

/* Lists & Tags */
.icon-list li + li { margin-top: .35rem; }
.icon-list i { color: var(--primary); margin-right: .45rem; }
.tag-list { display:flex; flex-wrap:wrap; gap:.5rem; padding-left:0; list-style:none; }
.tag-list li {
  padding: .35rem .6rem; border-radius: 999px;
  border: 1px solid var(--border); background: var(--bg-elev); color: var(--text-muted);
  font-size: .925rem;
}

/* Timeline */
.timeline { display: grid; gap: 16px; position: relative; }
@media (min-width: 992px) { .timeline { border-left: 2px dashed var(--border); padding-left: 24px; } }
.timeline-item { position: relative; }
.timeline-item::before {
  content:""; position:absolute; left: -12px; top: 28px; width: 8px; height: 8px;
  background: linear-gradient(135deg, var(--primary), var(--accent)); border-radius: 999px;
  box-shadow: 0 0 0 4px rgba(255,255,255,0.06);
}
.badge-date {
  font-family: var(--font-mono);
  color: var(--text-muted);
  border: 1px dashed var(--border);
  border-radius: 8px;
  padding: 2px 8px;
}

/* Links */
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--text); }
.link-styled { color: var(--accent); }
.link-styled:hover { color: var(--text); }
.underline-hover { position: relative; }
.underline-hover::after {
  content:""; position:absolute; left:0; bottom:-3px; height:2px; width:0;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  transition: width .25s ease;
}
.underline-hover:hover::after { width:100%; }

/* Footer */
.site-footer { border-top: 1px solid var(--border); background: var(--bg); }
.quote { color: var(--muted-2); }

/* Back to top */
.back-to-top-btn {
  position: fixed; right: 20px; bottom: 20px; z-index: 999;
  display: none; width: 48px; height: 48px; border-radius: 999px;
  background: var(--bg-elev); color: var(--text);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-soft);
  transition: transform .15s ease, background .2s ease;
}
.back-to-top-btn:hover { transform: translateY(-2px); }

/* Modals */
.modal-content {
  background: var(--bg-elev);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 14px;
}
.modal-header, .modal-footer { border-color: var(--border); }
.modal-title { color: var(--primary); }
.btn-close-white { filter: invert(1) grayscale(100%) brightness(200%); }

/* Responsive */
@media (max-width: 768px) { .primary-nav .nav { justify-content: center; } }

/* Motion guard */
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}

/* Reveal (scroll-in) – robuste Defaults */
.reveal { opacity: 0.001; transform: translateY(8px); } /* fast unsichtbar statt 0 -> FOUC vermeiden */
.reveal.in { opacity: 1; transform: none; transition: opacity .45s ease, transform .45s ease; }
.fade-up { transform: translateY(12px); }
.fade-in { transform: none; opacity: 0.001; }
.slide-in { transform: translateX(-12px); }
.reveal.fade-up.in, .reveal.slide-in.in { transform: none; }
.reveal.fade-in.in { opacity: 1; }