/* =========================================================
   matthiasrosenberger.com – Stylesheet
   Farben und Maße stehen oben als Variablen, damit Änderungen
   an einer Stelle gemacht werden können.
   ========================================================= */

/* Schrift Arimo, lokal eingebunden (keine Verbindung zu Google) */
@font-face { font-family: "Arimo"; font-style: normal; font-weight: 400; font-display: swap; src: url("fonts/arimo-latin-400-normal.woff2") format("woff2"); }
@font-face { font-family: "Arimo"; font-style: italic; font-weight: 400; font-display: swap; src: url("fonts/arimo-latin-400-italic.woff2") format("woff2"); }
@font-face { font-family: "Arimo"; font-style: normal; font-weight: 500; font-display: swap; src: url("fonts/arimo-latin-500-normal.woff2") format("woff2"); }
@font-face { font-family: "Arimo"; font-style: normal; font-weight: 700; font-display: swap; src: url("fonts/arimo-latin-700-normal.woff2") format("woff2"); }
@font-face { font-family: "Arimo"; font-style: italic; font-weight: 700; font-display: swap; src: url("fonts/arimo-latin-700-italic.woff2") format("woff2"); }

:root {
  --page-bg:      #aaa5b3;  /* Hintergrund der Seite */
  --panel-bg:     #767180;  /* Hintergrund der drei Felder */
  --tile-bg:      #908c9a;  /* Hintergrund der Venture-Kacheln */
  --logo-bg:      #000000;  /* Hintergrund hinter den Logos */
  --frame:        #ffffff;  /* weißer Rahmen */
  --text:         #ffffff;
  --muted:        #908c9a;  /* Copyright-Zeile */
  --max-width:    780px;
  --frame-width:  15px;
}

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

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

body {
  margin: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  background: var(--page-bg);
  color: var(--text);
  font-family: Arimo, Arial, Helvetica, sans-serif;
  font-size: 14px;
  line-height: 16px;
}

img { display: block; max-width: 100%; height: auto; }
a { color: inherit; }
p { margin: 0; }

/* ---------- Die drei Felder ---------- */
.panel {
  width: 100%;
  max-width: var(--max-width);
  padding: 30px;
  border: var(--frame-width) solid var(--frame);
  background: var(--panel-bg);
}
.panel--top     { margin-top: 50px; padding-bottom: 15px; border-bottom-width: 7px; }
.panel--ventures{ border-top-width: 8px; border-bottom-width: 8px; }
.panel--bottom  { margin-bottom: 100px; border-top-width: 8px;
                  display: flex; justify-content: space-between; gap: 16px; }

/* ---------- Oberer Teil ---------- */
.intro {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  grid-template-rows: auto auto auto;
  gap: 14px;
}
.intro__portrait { grid-column: 1; grid-row: 1 / span 3; width: 198px; }
.intro__bio      { grid-column: 2 / span 2; grid-row: 1 / span 2; margin-top: 5px; }
.intro__bio p + p { margin-top: 16px; }
.intro__imagine  { grid-column: 2; grid-row: 3; align-self: end; justify-self: center; width: 140px; }
.intro__linkedin { grid-column: 3; grid-row: 3; align-self: end; justify-self: end; width: 40px; }

/* ---------- Ventures ---------- */
.panel--ventures {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 21px;
}
.venture {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 10px;
  background: var(--tile-bg);
  color: var(--text);
  text-align: center;
  text-decoration: none;
  position: relative;
  overflow: hidden;
  transition: transform .3s ease, box-shadow .3s ease;
}
/* Glaseffekt beim Überfahren: Kachel hebt sich leicht, ein Lichtreflex gleitet darüber */
.venture::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(115deg, transparent 30%, rgba(255,255,255,.32) 45%, rgba(255,255,255,.08) 55%, transparent 70%);
  transform: translateX(-120%);
  pointer-events: none;
}
.venture:hover, .venture:focus-visible {
  transform: translateY(-4px);
  box-shadow: 0 10px 24px rgba(0,0,0,.28), inset 0 0 0 1px rgba(255,255,255,.3);
}
/* Der Reflex läuft nur beim Hinfahren; beim Wegfahren springt er unsichtbar zurück */
.venture:hover::after, .venture:focus-visible::after { transform: translateX(120%); transition: transform .8s ease; }
@media (prefers-reduced-motion: reduce) {
  .venture, .venture::after, .venture:hover::after { transition: none; }
}
.venture__logo {
  position: relative;
  width: 100%;
  height: 115px;
  padding: 12px;
  background: var(--logo-bg);
}
.venture__logo img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}
.venture__name  { margin-top: 4px; font-size: 14px; }
.venture__claim { font-size: 10px; line-height: 13px; }

/* ---------- Logo-Wechsel beim Überfahren (weiß → Farbe), weich überblendet ---------- */
.venture__logo, .intro__imagine { position: relative; display: block; }
.swap { transition: opacity .35s ease; }
.intro__imagine .swap { transition-duration: .7s; }   /* Imagine-Gold kommt langsamer */
.swap--hover { position: absolute; opacity: 0; }
.venture__logo .swap--hover { inset: 12px; width: calc(100% - 24px); height: calc(100% - 24px); }
.intro__imagine .swap--hover { inset: 0; }
a:hover .swap--default, a:focus-visible .swap--default { opacity: 0; }
a:hover .swap--hover,   a:focus-visible .swap--hover   { opacity: 1; }
@media (prefers-reduced-motion: reduce) { .swap { transition: none; } }

/* Imagine: beim Überfahren füllt sich der Schriftzug mit den Farben von imagine.ag */
.imagine-flow {
  width: 100%;
  aspect-ratio: 400 / 148;
  background: url("images/imagine-flow.webp") 0% 50% / 250% auto;
  -webkit-mask: url("images/imagine-white.webp") center / contain no-repeat;
          mask: url("images/imagine-white.webp") center / contain no-repeat;
  filter: saturate(1.1);
  animation: imagine-flow 9s ease-in-out infinite alternate;
}
@keyframes imagine-flow { to { background-position: 100% 50%; } }
@media (prefers-reduced-motion: reduce) { .imagine-flow { animation: none; } }

/* ---------- Unterer Teil ---------- */
.legal { color: var(--muted); text-align: right; }
.legal__links { white-space: nowrap; }
/* Ab Fensterbreite bleiben Zitat und Copyright-Zeile jeweils in einer Zeile */
@media (min-width: 840px) {
  .quote, .legal { white-space: nowrap; }
}
.legal a { color: var(--muted); }

/* ---------- Impressum als Overlay ---------- */
.imprint {
  position: fixed;
  inset: 0;
  display: none;
  justify-content: center;
  align-items: flex-start;
  padding: 100px 16px 16px;
  background: rgba(26, 26, 26, 0.7);
  overflow-y: auto;
  z-index: 10;
}
.imprint:target { display: flex; }
.imprint__box {
  position: relative;
  width: 100%;
  max-width: 800px;
  padding: 15px 15px 20px;
  background: #fefefe;
  color: #000;
}
.imprint__box p + p { margin-top: 16px; }
.imprint__box h2 { font-size: 20px; margin-bottom: 12px; }
.imprint__box .imprint__section { margin-top: 32px; padding-top: 20px; border-top: 1px solid #ddd; }
.imprint__box h3 { font-size: 15px; margin: 20px 0 6px; }
.imprint__box h3 + p { margin-top: 0; }
.imprint__box a { color: #000; }
.imprint__close {
  display: block;
  text-align: right;
  font-size: 30px;
  line-height: 30px;
  font-weight: 700;
  text-decoration: none;
  color: #000;
}

.visually-hidden {
  position: absolute; width: 1px; height: 1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap;
}

/* ---------- Tablet ---------- */
@media (max-width: 767px) {
  .panel--top { margin-top: 0; }
  .panel--bottom { margin-bottom: 0; flex-direction: column; align-items: center; text-align: center; }
  .intro__bio { margin-top: 2px; }
}

/* ---------- Smartphone ---------- */
@media (max-width: 479px) {
  .panel { padding: 20px; }
  .panel--ventures { grid-template-columns: 1fr; }
  .intro { grid-template-columns: 1fr 1fr; }
  .intro__bio      { grid-column: 1 / span 2; grid-row: 1; margin-top: 0; font-weight: 500; text-align: center; }
  .intro__portrait { grid-column: 1 / span 2; grid-row: 2; justify-self: center; }
  .intro__imagine  { grid-column: 1; grid-row: 3; }
  .intro__linkedin { grid-column: 2; grid-row: 3; }
}