/* 62.5% von 16px (Browser-Standard) = 10px → 1rem = 10px */
html {
  font-size: 62.5%;
}

:root {
  /* Dimensionen */
  --wall-width: 768rem;
  --wall-height: 216rem;
  --col-branding-width: 138rem; /* 1380px ≈ 18% der Wall */
  --col-sponsors-width: 138rem; /* 1380px ≈ 18% der Wall */

  /* Globale Farben */
  --color-accent: #3b75ba;
  --color-accent-light: #6b9fd4;
  --col-separator: color-mix(in srgb, var(--color-accent) 22%, transparent);

  /* Akzentlinien */
  --accent-line-height: 0.4rem;

  /* Branding: Farben */
  --branding-dark: #060e1a; /* Dunkel-Overlay (Gradient oben→unten) */
  --branding-base-a: #0f2d52; /* Basis-Gradient Außen */
  --branding-base-b: #1a4070; /* Basis-Gradient Mitte */
  --branding-accent: #2456a0; /* Radial-Leuchtfleck oben */

  /* Main (mitte) */
  --main-bg: #112d50;

  /* Main: Wordmark-Band */
  --main-wordmark-speed: 0.05; /* px per frame */
  --main-wordmark-logo-height: 8rem;
  --main-wordmark-gap: 8rem;
  --main-wordmark-row-padding: 2.4rem;
  --main-wordmark-padding-bottom: 3rem;
  --main-wordmark-opacity: 20%;

  /* Sponsors (rechts) */
  --sponsors-base-a: #112e54;
  --sponsors-base-b: #0f2a4a;

  /* Sponsors: Scroll */
  --sponsors-scroll-duration: 180s;
  --sponsors-fade-height: 12%;

  /* Sponsors: Logo-Größen je Kategorie (Höhe; Breite skaliert automatisch mit) */
  --size-premium: 24rem;
  --size-haupt: 17rem;
  --size-plus: 13.5rem;
  --size-sponsoren: 11rem;
  --size-partner: 10rem;
  --size-foerderbank: 9rem;
  --size-medienpartner: 9rem;

  /* Sponsors: Logo-Stil */
  --sponsors-logo-color: #ffffff;
  --sponsors-logo-opacity: 0.75;

  /* Sponsors: Abstände */
  --sponsors-logo-padding-h: 4%;
  --sponsors-gap-col: 6rem;
  --sponsors-gap-row: 4rem;
  --sponsors-tier-gap: 16rem;

  /* Sponsors: horizontaler Gap pro Tier (Fallback: --sponsors-gap-col) */
  --gap-col-premium: var(--sponsors-gap-col);
  --gap-col-haupt: 8rem;
  --gap-col-plus: var(--sponsors-gap-col);
  --gap-col-sponsoren: var(--sponsors-gap-col);
  --gap-col-partner: var(--sponsors-gap-col);
  --gap-col-foerderbank: var(--sponsors-gap-col);
  --gap-col-medienpartner: var(--sponsors-gap-col);

  /* Sponsors: Tier-Überschrift */
  --tier-heading-margin-bottom: 6rem;
}

/* Fonts */
@font-face {
  font-family: "Open Sans";
  src: url("assets/fonts/OpenSans-Variable-latin.woff2") format("woff2");
  font-weight: 300 800;
  font-style: normal;
  font-display: swap;
}

/* Reset */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

.wall {
  width: var(--wall-width);
  height: var(--wall-height);
  display: flex;
  position: relative;
}

.wall::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: var(--accent-line-height);
  background: linear-gradient(
    90deg,
    transparent 0%,
    color-mix(in srgb, var(--color-accent) 30%, transparent) 8%,
    var(--color-accent) 14%,
    var(--color-accent-light) 50%,
    var(--color-accent) 86%,
    color-mix(in srgb, var(--color-accent) 30%, transparent) 92%,
    transparent 100%
  );
  z-index: 10;
}

.wall__col--branding {
  width: var(--col-branding-width);
  border-right: 1px solid var(--col-separator);
  display: flex;
  flex-direction: column;
  padding: 22rem 10rem 0;
  position: relative;
  background:
    linear-gradient(
      180deg,
      color-mix(in srgb, var(--branding-dark) 10%, transparent) 0%,
      color-mix(in srgb, var(--branding-dark) 60%, transparent) 55%,
      color-mix(in srgb, var(--branding-dark) 95%, transparent) 100%
    ),
    radial-gradient(
      ellipse 120% 80% at 50% 20%,
      var(--branding-accent) 0%,
      transparent 68%
    ),
    linear-gradient(
      160deg,
      var(--branding-base-a) 0%,
      var(--branding-base-b) 50%,
      var(--branding-base-a) 100%
    );
}

.wall__col--main {
  flex: 1;
  background: var(--main-bg);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  overflow: hidden;
}

/* ── Branding (links) ── */
.branding__inner {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 32rem;
}

.branding__logo-top,
.branding__logo-bottom {
  width: 100%;
}

.branding__theme {
  display: flex;
  flex-direction: column;
  gap: 4rem;
  color: rgba(255, 255, 255, 0.88);
  line-height: 1.07;
}

.branding__theme-title {
  font-family: "Open Sans", sans-serif;
  font-weight: 700;
  font-size: 10.5rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.branding__theme-sub {
  font-family: "Open Sans", sans-serif;
  font-weight: 400;
  font-size: 9.5rem;
  opacity: 0.7;
}

.branding__footer {
  height: calc(
    3 *
      (
        var(--main-wordmark-logo-height) + 2 * var(--main-wordmark-row-padding)
      ) +
      var(--main-wordmark-padding-bottom)
  );
  display: flex;
  align-items: center;
}

/* ── Main: Wordmark-Band ── */
.main__wordmark {
  overflow: hidden;
  padding-bottom: var(--main-wordmark-padding-bottom);
}

.main__wordmark-row {
  overflow: hidden;
  padding-block: var(--main-wordmark-row-padding);
}

.main__wordmark-track {
  display: flex;
  align-items: center;
  will-change: transform;
  backface-visibility: hidden;
}

.main__wordmark-half {
  display: flex;
  align-items: center;
  gap: var(--main-wordmark-gap);
  padding-inline-end: var(--main-wordmark-gap);
}

.main__wordmark-track img {
  height: var(--main-wordmark-logo-height);
  width: auto;
  flex-shrink: 0;
  opacity: var(--main-wordmark-opacity);
}

/* ── Sponsors ── */
.wall__col--sponsors {
  width: var(--col-sponsors-width);
  display: flex;
  flex-direction: column;
  border-left: 1px solid var(--col-separator);
  background: linear-gradient(
    160deg,
    var(--sponsors-base-a) 0%,
    var(--sponsors-base-b) 100%
  );
}

.sponsors__window {
  flex: 1;
  overflow: hidden;
  position: relative;
  transform: translateZ(0);
}

.sponsors__window::before,
.sponsors__window::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: var(--sponsors-fade-height);
  z-index: 3;
  pointer-events: none;
}

.sponsors__window::before {
  top: 0;
  background: linear-gradient(180deg, var(--sponsors-base-b), transparent);
}

.sponsors__window::after {
  bottom: 0;
  background: linear-gradient(0deg, var(--sponsors-base-b), transparent);
}

@keyframes scrollUp {
  from {
    transform: translate3d(0, 0, 0);
  }
  to {
    transform: translate3d(0, -50%, 0);
  }
}

.sponsors__track {
  animation: scrollUp var(--sponsors-scroll-duration) linear infinite;
  will-change: transform;
  backface-visibility: hidden;
  -webkit-font-smoothing: antialiased;
}

.sponsors__set {
  padding: 0 var(--sponsors-logo-padding-h);
}

.tier-heading-svg {
  display: block;
  width: 100%;
  height: auto;
  margin-bottom: var(--tier-heading-margin-bottom);
}

.tier {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: var(--sponsors-gap-row) var(--sponsors-gap-col);
  padding-bottom: var(--sponsors-tier-gap);
}

.logo {
  --logo-scale: 1; /* per-Logo Override, z.B. via .logo--90 */
  background-color: var(--sponsors-logo-color);
  opacity: var(--sponsors-logo-opacity);
  -webkit-mask-repeat: no-repeat;
  mask-repeat: no-repeat;
  -webkit-mask-position: center;
  mask-position: center;
  -webkit-mask-size: contain;
  mask-size: contain;
}

/* Einzelnes Logo größer/kleiner, ohne die Tier-Größe anzufassen: Klasse zusätzlich zu "logo" dranhängen */
.logo--140 {
  --logo-scale: 1.4;
}
.logo--135 {
  --logo-scale: 1.35;
}
.logo--130 {
  --logo-scale: 1.3;
}
.logo--125 {
  --logo-scale: 1.25;
}
.logo--120 {
  --logo-scale: 1.2;
}
.logo--115 {
  --logo-scale: 1.15;
}
.logo--110 {
  --logo-scale: 1.1;
}
.logo--105 {
  --logo-scale: 1.05;
}
.logo--95 {
  --logo-scale: 0.95;
}
.logo--90 {
  --logo-scale: 0.9;
}
.logo--85 {
  --logo-scale: 0.85;
}
.logo--80 {
  --logo-scale: 0.8;
}
.logo--75 {
  --logo-scale: 0.75;
}
.logo--70 {
  --logo-scale: 0.7;
}

.tier--premium .logo {
  width: calc(var(--size-premium) * 2.4 * var(--logo-scale));
  height: calc(var(--size-premium) * var(--logo-scale));
}
.tier--haupt .logo {
  width: calc(var(--size-haupt) * 2.4 * var(--logo-scale));
  height: calc(var(--size-haupt) * var(--logo-scale));
}
.tier--plus .logo {
  width: calc(var(--size-plus) * 2.4 * var(--logo-scale));
  height: calc(var(--size-plus) * var(--logo-scale));
}
.tier--sponsoren .logo {
  width: calc(var(--size-sponsoren) * 2.4 * var(--logo-scale));
  height: calc(var(--size-sponsoren) * var(--logo-scale));
}
.tier--partner .logo {
  width: calc(var(--size-partner) * 2.4 * var(--logo-scale));
  height: calc(var(--size-partner) * var(--logo-scale));
}
.tier--foerderbank .logo {
  width: calc(var(--size-foerderbank) * 2.4 * var(--logo-scale));
  height: calc(var(--size-foerderbank) * var(--logo-scale));
}
.tier--medienpartner .logo {
  width: calc(var(--size-medienpartner) * 2.4 * var(--logo-scale));
  height: calc(var(--size-medienpartner) * var(--logo-scale));
}

/* für Logos mit ~1:1-Seitenverhältnis: Box nicht auf 2.4:1 aufzwingen, sonst
   Leerraum links/rechts durch mask-size:contain */
.logo.logo--square {
  width: auto;
  aspect-ratio: 1 / 1;
}

/* Excellent Companies: Hochformat-Logo (226.77 x 346.2 in der SVG) */
.logo.logo--portrait-excellent {
  width: auto;
  aspect-ratio: 226.77186 / 346.20425;
}

/* UnitTwo Consulting: 226.77 x 197.12 in der SVG */
.logo.logo--unittwo {
  width: auto;
  aspect-ratio: 226.77199 / 197.12;
}

/* GIFT: 226.77 x 160.03 in der SVG */
.logo.logo--gift {
  width: auto;
  aspect-ratio: 226.77085 / 160.0278;
}

/* Commerzbank: 226.77 x 151.19 in der SVG */
.logo.logo--commerzbank {
  width: auto;
  aspect-ratio: 226.77199 / 151.18801;
}

.tier--premium {
  column-gap: var(--gap-col-premium);
}
.tier--haupt {
  column-gap: var(--gap-col-haupt);
}
.tier--plus {
  column-gap: var(--gap-col-plus);
}
.tier--sponsoren {
  column-gap: var(--gap-col-sponsoren);
}
.tier--partner {
  column-gap: var(--gap-col-partner);
}
.tier--foerderbank {
  column-gap: var(--gap-col-foerderbank);
}
.tier--medienpartner {
  column-gap: var(--gap-col-medienpartner);
}