/* viderius.ch – Startseite
   Mobile zuerst. Eine Akzentfarbe (#020A42). Hell als Standard, Dunkel per Systemeinstellung.
   Bewegung nur beim Scrollen, abgeschaltet bei prefers-reduced-motion. */

:root {
  --bg: #ffffff;
  --fg: #0b0b10;
  --muted: #464853;
  --line: #d9dbe3;
  --accent: #020a42;         /* Markenfarbe, rgb(2,10,66) */
  --accent-fg: #ffffff;      /* Schrift auf Akzentflaeche */
  --accent-hover: #0c1a6e;   /* Button bei Hover, eine Stufe heller */
  --accent-soft: rgba(2, 10, 66, 0.06);
  --grid: rgba(2, 10, 66, 0.10);
  --placeholder-bg: #eef0f6;
  --logo-square: #020a42;    /* Hell: Quadrat in Markenfarbe, V weiss */
  --logo-v: #fffdf7;

  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Helvetica, Arial, sans-serif;
  --wrap: 68rem;
  --pad: 1.25rem;
  --ease: cubic-bezier(.2, .7, .2, 1);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #07091a;           /* aus der Markenfarbe abgeleitet */
    --fg: #f3f4f8;
    --muted: #b9bdcc;
    --line: #262a44;
    --accent: #aebcff;       /* hellere Stufe derselben Farbe, damit sie auf Dunkel lesbar bleibt */
    --accent-fg: #07091a;
    --accent-hover: #c6cfff;
    --accent-soft: rgba(174, 188, 255, 0.08);
    --grid: rgba(174, 188, 255, 0.12);
    --placeholder-bg: #10132a;
    --logo-square: #fffdf7;  /* Dunkel: Quadrat weiss, V navy, wie im Original */
    --logo-v: #060a1f;
  }
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: var(--font);
  font-size: 1.0625rem;
  line-height: 1.5;
  color: var(--fg);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, p, dl, dd, dt, ol, figure { margin: 0; }
a { color: inherit; }

.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--pad);
}

/* Scroll-Fortschritt, 2px, oben */
.progress {
  position: fixed;
  top: 0; left: 0;
  height: 2px;
  width: 100%;
  background: var(--accent);
  transform-origin: 0 50%;
  transform: scaleX(0);
  z-index: 20;
  pointer-events: none;
}

/* Kopfzeile */
.top {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem var(--pad);
  background: var(--bg);
  border-bottom: 1px solid var(--line);
}

/* Logo: Zeichen (Quadrat mit V und Punkt) und Wortmarke als eingebettete Pfade,
   Schrift Rockwell Bold in Pfade umgewandelt, darum keine Schriftdatei noetig */
.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  flex-shrink: 0;
  color: var(--fg);
}
.logo svg { display: block; height: 1.875rem; width: auto; }
.logo-square { fill: var(--logo-square); }
.logo-v { fill: var(--logo-v); }
.logo-dot { fill: #abb6f6; }
.logo-word path { fill: currentColor; }

.top-mail, .top-back {
  text-decoration: none;
  font-weight: 700;
  color: var(--accent);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  min-width: 0;
}

/* Sprachumschalter, nur mit JS sichtbar */
.lang {
  display: none;
  margin-left: auto;
  border: 1px solid var(--line);
  border-radius: 0.25rem;
  overflow: hidden;
  flex-shrink: 0;
}
.js .lang { display: inline-flex; }
.lang button {
  appearance: none;
  border: 0;
  margin: 0;
  padding: 0.35rem 0.6rem;
  background: transparent;
  color: var(--muted);
  font: inherit;
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  line-height: 1;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}
.lang button + button { border-left: 1px solid var(--line); }
.lang button[aria-pressed="true"] {
  background: var(--accent);
  color: var(--accent-fg);
}
.lang button:focus-visible { outline: 2px solid var(--accent); outline-offset: -2px; }

@media (max-width: 30rem) {
  .logo .logo-word { display: none; } /* auf dem Handy nur das Zeichen */
}

/* Hero */
.hero {
  position: relative;
  overflow: hidden;
  min-height: calc(100svh - 3.5rem);
  display: flex;
  align-items: center;
  padding-block: 3.5rem 3rem;
}

.hero-bg {
  position: absolute;
  inset: -20% 0;
  background-image:
    linear-gradient(var(--grid) 2px, transparent 2px),
    linear-gradient(90deg, var(--grid) 2px, transparent 2px);
  background-size: 3rem 3rem;
  mask-image: linear-gradient(to bottom, transparent, #000 25%, #000 70%, transparent);
  -webkit-mask-image: linear-gradient(to bottom, transparent, #000 25%, #000 70%, transparent);
  will-change: transform;
  pointer-events: none;
}

.hero .wrap { position: relative; }

.claim {
  font-size: clamp(2.125rem, 8.5vw, 5rem);
  line-height: 1.04;
  letter-spacing: -0.025em;
  font-weight: 700;
  max-width: 16ch;
  text-wrap: balance;
}

.sub {
  margin-top: 1.5rem;
  max-width: 34ch;
  font-size: clamp(1.0625rem, 2.6vw, 1.375rem);
  color: var(--muted);
  text-wrap: pretty;
}

/* E-Mail als einziger Call-to-Action */
.mail {
  display: inline-flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.15rem;
  margin-top: 2.25rem;
  padding: 1rem 1.4rem;
  text-decoration: none;
  background: var(--accent);
  color: var(--accent-fg);
  border-radius: 0.25rem;
  min-width: 14rem;
  max-width: 100%;
  transition: background-color 0.2s var(--ease), transform 0.15s var(--ease), box-shadow 0.2s var(--ease);
  -webkit-tap-highlight-color: transparent;
}
.mail:hover { background: var(--accent-hover); }
.mail:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
.mail:active {
  transform: scale(0.98);
  box-shadow: inset 0 2px 6px rgba(0, 0, 0, 0.25);
}
/* Beim Druecken blendet die Adresse kurz neu ein */
@keyframes mail-address-in {
  0%   { opacity: 0; transform: translateY(0.3rem); }
  100% { opacity: 1; transform: none; }
}
.mail.is-pressed .mail-address { animation: mail-address-in 0.45s var(--ease); }
.top-mail { transition: opacity 0.15s; }
.top-mail:active { opacity: 0.6; }

.mail-label {
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  opacity: 0.8;
}
.mail-address {
  font-size: clamp(1.125rem, 4.4vw, 1.625rem);
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.15;
  overflow-wrap: anywhere;
}

/* Abschnitte */
section { padding-block: 4.5rem; }
section + section { border-top: 1px solid var(--line); }

h2 {
  font-size: clamp(1.625rem, 5vw, 2.5rem);
  line-height: 1.12;
  letter-spacing: -0.02em;
  font-weight: 700;
  max-width: 22ch;
  text-wrap: balance;
}

/* Schritte */
.step-list {
  list-style: none;
  padding: 0;
  margin-top: 2.5rem;
  display: grid;
  gap: 2rem;
}
.step-list li {
  display: grid;
  grid-template-columns: 3rem 1fr;
  column-gap: 0.75rem;
  align-items: baseline;
}
.step-n {
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  color: var(--accent);
  font-size: 0.9375rem;
  letter-spacing: 0.06em;
}
.step-list h3 {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}
.step-list p {
  grid-column: 2;
  margin-top: 0.35rem;
  color: var(--muted);
  max-width: 38ch;
}

.langs {
  margin-top: 2.75rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.9375rem;
  letter-spacing: 0.01em;
}

/* Zahlen */
.eyebrow {
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 0.75rem;
}
.stats {
  margin-top: 2.5rem;
  display: grid;
  gap: 2.25rem;
}
.stat dd {
  font-size: clamp(2.75rem, 12vw, 6rem);
  line-height: 1;
  font-weight: 700;
  letter-spacing: -0.04em;
  font-variant-numeric: tabular-nums;
  color: var(--accent);
  white-space: nowrap;
}
.stat dt {
  margin-top: 0.5rem;
  font-size: 1.0625rem;
  color: var(--muted);
}
.stats-note {
  margin-top: 2.25rem;
  color: var(--muted);
  max-width: 40ch;
}

/* Gruender */
.founder-grid {
  margin-top: 2.5rem;
  display: grid;
  gap: 2.5rem;
}
.founder img,
.photo-missing {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  border-radius: 0.25rem;
  background: var(--placeholder-bg);
}
.photo-missing {
  display: grid;
  place-items: center;
  border: 1px dashed var(--line);
  color: var(--muted);
  font-size: 0.9375rem;
  font-variant-numeric: tabular-nums;
}
.founder figcaption {
  margin-top: 1rem;
  display: grid;
  gap: 0.15rem;
}
.founder strong { font-size: 1.25rem; letter-spacing: -0.01em; }
.founder span { color: var(--muted); }

/* Schluss-CTA */
.cta { background: var(--accent-soft); }
.cta p {
  margin-top: 1rem;
  max-width: 40ch;
  color: var(--muted);
}
.mail-big { margin-top: 2rem; }

/* Fusszeile */
.foot {
  padding-block: 1.5rem;
  border-top: 1px solid var(--line);
  font-size: 0.875rem;
  color: var(--muted);
}
.foot .wrap {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}
.foot a { color: var(--accent); }
.foot-links { display: flex; flex-wrap: wrap; gap: 0.5rem 1.25rem; }

/* Unterseite (Impressum) */
.page { padding-block: 3rem 4rem; }
.page .wrap { max-width: 44rem; }
.page h1 {
  font-size: clamp(2rem, 7vw, 3rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
  font-weight: 700;
}
.page-h {
  margin-top: 2.25rem;
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--muted);
  max-width: none;
}
.page address {
  margin-top: 0.75rem;
  font-style: normal;
  display: grid;
  gap: 0.15rem;
}
.page p { margin-top: 0.75rem; max-width: 60ch; }
.page .lead { margin-top: 1.25rem; font-size: 1.125rem; }
.page ul { margin: 0.75rem 0 0; padding-left: 1.25rem; max-width: 60ch; }
.page li + li { margin-top: 0.4rem; }
.page .small { margin-top: 2rem; color: var(--muted); font-size: 0.875rem; }
.page a { color: var(--accent); }

/* Scroll-Animationen: nur einblenden, wenn JS das Element sieht */
.js .reveal {
  opacity: 0;
  transform: translateY(1.25rem);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
  transition-delay: var(--d, 0ms);
}
.js .reveal.is-visible {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .js .reveal { opacity: 1; transform: none; transition: none; }
  .hero-bg { transform: none !important; }
  .mail, .mail-address { transition: none; animation: none !important; transform: none !important; }
  .progress { display: none; }
}

/* Groessere Bildschirme */
@media (min-width: 44rem) {
  :root { --pad: 2rem; }
  .top { padding-block: 1rem; }
  .hero { padding-block: 5rem 4rem; }
  section { padding-block: 6rem; }
  .step-list {
    grid-template-columns: repeat(3, 1fr);
    gap: 2.5rem 2.5rem;
  }
  .step-list li { grid-template-columns: 1fr; row-gap: 0.4rem; }
  .step-list p { grid-column: 1; }
  .stats { grid-template-columns: repeat(2, 1fr); gap: 3rem; }
  .stat dd { font-size: clamp(2.5rem, 5.5vw, 4.5rem); }
  .founder-grid { grid-template-columns: repeat(2, 1fr); gap: 3rem; max-width: 52rem; }
  
}

@media (min-width: 64rem) {
  .step-list { gap: 3rem; }
  .claim { max-width: 15ch; }
}