/* ==========================================================================
   INworld(R) Digitale Medien - style.css  (dark / technical)
   Self-hosted Bricolage Grotesque display + dark infra aesthetic.
   Accent = exact logo blue #008CCA. No external fonts/CDN/tracker.
   ========================================================================== */

@font-face {
  font-family: "Bricolage";
  src: url("fonts/bricolage.woff2") format("woff2");
  font-weight: 200 800;
  font-display: swap;
  font-style: normal;
}

:root {
  --bg:          #0a0f15;
  --bg-alt:      #0f161e;
  --ink:         #e9eff4;
  --ink-soft:    #8ca0ae;
  --line:        #1c2731;
  --line-strong: #2b3a47;
  --accent:      #008cca;          /* exact logo blue (sampled from the mark) */
  --accent-ink:  #008cca;          /* passes AA (~5.1:1) on the dark surfaces */
  --accent-weak: rgba(0, 140, 202, 0.12);
  --accent-glow: rgba(0, 140, 202, 0.42);

  --font-sans:    -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-display: "Bricolage", var(--font-sans);
  --font-mono:    ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;

  --fs-eyebrow: 0.78rem;
  --fs-small:   0.875rem;
  --fs-body:    1.0625rem;
  --fs-lead:    clamp(1.15rem, 1.05rem + 0.5vw, 1.4rem);
  --fs-h3:      1.3rem;
  --fs-h2:      clamp(1.6rem, 1.2rem + 1.6vw, 2.4rem);
  --fs-h1:      clamp(2.3rem, 1.5rem + 3.6vw, 4rem);

  --container: 1120px;
  --measure:   66ch;
  --radius:    12px;
  --radius-sm: 7px;
  --ease:      cubic-bezier(0.22, 1, 0.36, 1);
}

*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition: none !important; }
}

body {
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  line-height: 1.62;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--accent-ink); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 2px; }

h1, h2, h3 {
  font-family: var(--font-display);
  line-height: 1.08;
  font-weight: 650;
  letter-spacing: -0.02em;
}

.container { width: 100%; max-width: var(--container); margin-inline: auto; padding-inline: clamp(1.1rem, 4vw, 2.5rem); }
.section { padding-block: clamp(3.5rem, 7vw, 6.5rem); }
.section--alt { background: var(--bg-alt); border-block: 1px solid var(--line); }

.eyebrow {
  font-family: var(--font-mono); font-size: var(--fs-eyebrow); letter-spacing: 0.16em;
  text-transform: uppercase; color: var(--accent-ink);
  display: inline-flex; align-items: center; gap: 0.6em;
}
.eyebrow::before { content: ""; width: 1.8rem; height: 1px; background: var(--accent); box-shadow: 0 0 8px var(--accent-glow); }

.section__head { max-width: var(--measure); margin-bottom: clamp(1.8rem, 4vw, 2.8rem); }
.section__head h2 { font-size: var(--fs-h2); margin-top: 0.8rem; }
.section__head p { color: var(--ink-soft); font-size: var(--fs-lead); margin-top: 0.9rem; }

.skip { position: absolute; left: 0.5rem; top: -3rem; background: var(--accent); color: #04121b; font-weight: 600; padding: 0.6rem 1rem; border-radius: var(--radius-sm); z-index: 100; transition: top 0.2s var(--ease); }
.skip:focus { top: 0.5rem; }

.site-header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--bg) 80%, transparent);
  backdrop-filter: saturate(1.4) blur(12px);
  border-bottom: 1px solid var(--line);
}
.site-header__inner { display: flex; align-items: center; justify-content: space-between; gap: 1.5rem; min-height: 66px; }
.brand { display: inline-flex; align-items: center; gap: 0.7rem; }
.brand img { height: 24px; width: auto; }  /* transparent PNG: light wordmark + blue mark already read on dark */
.brand b { font-family: var(--font-display); font-weight: 600; font-size: 1rem; letter-spacing: -0.01em; }
.brand .reg { color: var(--accent); }

.nav { display: flex; align-items: center; gap: clamp(0.8rem, 2vw, 1.8rem); }
.nav a { color: var(--ink-soft); font-size: var(--fs-small); }
.nav a:hover { color: var(--ink); text-decoration: none; }

.lang { display: inline-flex; font-family: var(--font-mono); font-size: 0.75rem; border: 1px solid var(--line-strong); border-radius: var(--radius-sm); overflow: hidden; }
.lang a { padding: 0.25rem 0.55rem; color: var(--ink-soft); }
.lang a[aria-current="true"] { background: var(--accent); color: #04121b; }
.lang a:hover { text-decoration: none; }
@media (max-width: 640px) { .nav .nav__links { display: none; } }

.btn {
  display: inline-flex; align-items: center; gap: 0.5rem;
  font-size: var(--fs-small); font-weight: 550; line-height: 1;
  padding: 0.85rem 1.3rem; border-radius: var(--radius-sm);
  border: 1px solid transparent; cursor: pointer;
  transition: transform 0.15s var(--ease), background 0.15s, border-color 0.15s, box-shadow 0.2s;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn--primary { background: var(--accent); color: #04121b; box-shadow: 0 0 0 0 var(--accent-glow); }
.btn--primary:hover { box-shadow: 0 8px 28px -8px var(--accent-glow); }
.btn--ghost { border-color: var(--line-strong); color: var(--ink); }
.btn--ghost:hover { border-color: var(--accent); color: var(--accent-ink); }

/* Hero - dark, with drifting grid + accent aurora */
.hero { position: relative; overflow: hidden; padding-block: clamp(4rem, 10vw, 8rem); }
.hero::before {
  content: ""; position: absolute; inset: -2px; z-index: 0;
  background-image: linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 46px 46px;
  -webkit-mask-image: radial-gradient(120% 90% at 75% 0%, #000 0%, transparent 65%);
          mask-image: radial-gradient(120% 90% at 75% 0%, #000 0%, transparent 65%);
  animation: drift 22s linear infinite; opacity: 0.5;
}
.hero::after {
  content: ""; position: absolute; z-index: 0; top: -30%; right: -10%;
  width: 60vw; height: 60vw; max-width: 760px; max-height: 760px;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 60%);
  filter: blur(20px); pointer-events: none;
}
@keyframes drift { to { background-position: 46px 46px; } }
.hero .container { position: relative; z-index: 1; }
.hero h1 { font-size: var(--fs-h1); max-width: 17ch; margin-top: 1.2rem; }
.hero h1 .accent { color: var(--accent); text-shadow: 0 0 30px var(--accent-glow); }
.hero__lead { font-size: var(--fs-lead); color: var(--ink-soft); max-width: 54ch; margin-top: 1.4rem; }
.hero__cta { display: flex; flex-wrap: wrap; gap: 0.8rem; margin-top: 2.2rem; }

.reveal { opacity: 0; transform: translateY(16px); animation: rise 0.75s var(--ease) forwards; }
.reveal[data-d="1"] { animation-delay: 0.05s; }
.reveal[data-d="2"] { animation-delay: 0.16s; }
.reveal[data-d="3"] { animation-delay: 0.28s; }
.reveal[data-d="4"] { animation-delay: 0.40s; }
@keyframes rise { to { opacity: 1; transform: none; } }

/* Scroll-reveal (JS-toggled) */
.io { opacity: 0; transform: translateY(20px); transition: opacity 0.6s var(--ease), transform 0.6s var(--ease); }
.io.in { opacity: 1; transform: none; }

.grid { display: grid; gap: 1.1rem; }
.grid--3 { grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); }
.grid--2 { grid-template-columns: repeat(auto-fill, minmax(330px, 1fr)); }

.card {
  position: relative; background: var(--bg-alt);
  border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1.6rem 1.45rem; overflow: hidden;
  transition: border-color 0.25s var(--ease), transform 0.25s var(--ease), box-shadow 0.25s;
}
.card::before {
  content: ""; position: absolute; inset: 0; border-radius: inherit; padding: 1px;
  background: linear-gradient(140deg, var(--accent), transparent 40%);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
          mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude;
  opacity: 0; transition: opacity 0.25s;
}
.section--alt .card { background: #0c1219; }
.card:hover { border-color: transparent; transform: translateY(-4px); box-shadow: 0 18px 40px -22px var(--accent-glow); }
.card:hover::before { opacity: 1; }
.card__idx { font-family: var(--font-mono); font-size: 0.72rem; color: var(--accent); letter-spacing: 0.1em; }
.card h3 { font-size: var(--fs-h3); margin: 0.55rem 0 0.6rem; }
.card p { color: var(--ink-soft); font-size: var(--fs-small); line-height: 1.55; }

.tags { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-top: 1.05rem; }
.tag { font-family: var(--font-mono); font-size: 0.7rem; color: var(--accent-ink); background: var(--accent-weak); border: 1px solid var(--line); padding: 0.22rem 0.5rem; border-radius: 4px; white-space: nowrap; }

.split { display: grid; grid-template-columns: 1fr; gap: 2rem; align-items: start; }
@media (min-width: 820px) { .split { grid-template-columns: 1.3fr 1fr; gap: 3rem; } }
.split p { color: var(--ink-soft); max-width: var(--measure); }
.split p + p { margin-top: 1rem; }

.contact-grid { display: grid; gap: 1.5rem; grid-template-columns: 1fr; }
@media (min-width: 720px) { .contact-grid { grid-template-columns: 1.2fr 1fr; } }
.contact-list { list-style: none; padding: 0; display: grid; gap: 1.1rem; }
.contact-list dt { font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-soft); margin-bottom: 0.2rem; }
.contact-list dd { margin: 0; font-size: var(--fs-lead); }
.contact-card { background: var(--bg-alt); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.7rem; }

.site-footer { border-top: 1px solid var(--line); padding-block: 2.5rem; font-size: var(--fs-small); }
.site-footer__inner { display: flex; flex-wrap: wrap; gap: 1rem 2rem; justify-content: space-between; align-items: center; }
.site-footer a { color: var(--ink-soft); }
.site-footer a:hover { color: var(--ink); }
.site-footer .legal { display: flex; flex-wrap: wrap; gap: 1.2rem; }
.site-footer .mark { color: var(--ink-soft); font-family: var(--font-mono); font-size: 0.72rem; }

.prose { max-width: var(--measure); }
.prose h1 { font-size: var(--fs-h2); margin-bottom: 1.5rem; }
.prose h2 { font-size: var(--fs-h3); margin: 2rem 0 0.6rem; }
.prose p, .prose li { color: var(--ink-soft); }
.prose ul { padding-left: 1.2rem; }
.prose .note { background: var(--accent-weak); border-left: 3px solid var(--accent); padding: 0.9rem 1.1rem; border-radius: var(--radius-sm); margin: 1.5rem 0; color: var(--ink); font-size: var(--fs-small); }