:root {
  --pad: 3rem;
  --text: #000;
  --bg: #faf8f7;
  --accent: #ee0000;
  --nav-bg: #d6d1cb;
  --transition: 0.5s ease;
  --ease: cubic-bezier(0.25, 0.1, 0.25, 1);
}

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

/* ── Basis ────────────────────────────────────────── */
html {
  hyphens: auto;
  font-size: 18px;
  color-scheme: light;
  background: var(--bg);
}
body {
  color: var(--text);
  min-height: 100vh;
  overflow-x: hidden;
  background: var(--bg);
  font: 600 0.9rem/1.3 'Inter', Arial, sans-serif;
}
main, nav {
  transform: translateZ(0);
  backface-visibility: hidden;
}
@font-face {
  font-family: 'Inter';
  src: url('./fonts/Inter-Regular.woff2') format('woff2');
  font-weight: 300;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Inter';
  src: url('./fonts/Inter-Bold.woff2') format('woff2');
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}

/* ── Layout ───────────────────────────────────────── */
.site {
  display: grid;
  min-height: 100vh;
  grid-template-columns: 1fr;
}

/* ── Navigation ─────────────────────────────────────── */
nav {
  top: 0;
  left: 0;
  z-index: 10;
  display: flex;
  width: 15rem;
  height: 100vh;
  position: fixed;
  overflow-y: auto;
  font-weight: 300;
  flex-direction: column;
  background: var(--nav-bg);
  justify-content: space-between;
  padding: var(--pad) var(--pad) 2rem;
  animation: fadein 1s var(--ease) 0.3s both;
}
.nav-name {
  hyphens: none;
  font-size: 1.6rem;
  padding-right: 2rem;
  padding-bottom: 2rem;
}
.nav-links {
  flex: 1;
  display: flex;
  list-style: none;
  flex-direction: column;
}
.nav-links a {
  display: block;
  color: var(--text);
  position: relative;
  transition: color 1s;
  padding: 0.25rem 0;
  text-decoration: none;
}
.nav-links a::after {
  left: 0;
  bottom: 0;
  content: "";
  width: 100%;
  height: 0.09rem;
  position: absolute;
  transform-origin: left;
  transform: scaleX(0);
  background: var(--accent);
  transition: transform var(--transition);
}
.nav-links a:hover::after,
.nav-links a.active::after {
  transform: scaleX(1);
}

/* ── Hamburger ─────────────────────────────────────── */
.hamburger {
  z-index: 20;
  top: 0.7rem;
  right: 0.7rem;
  border: none;
  display: none;
  position: fixed;
  cursor: pointer;
  padding: 0.8rem;
  background: none;
}
.hamburger span {
  width: 30px;
  height: 2px;
  display: block;
  margin: 7px 0;
  background: var(--text);
  transition: transform var(--transition), opacity var(--transition);
}
body.nav-open .hamburger span:nth-child(1) {
  transform: translateY(9px) rotate(45deg);
}
body.nav-open .hamburger span:nth-child(2) {
  opacity: 0;
}
body.nav-open .hamburger span:nth-child(3) {
  transform: translateY(-9px) rotate(-45deg);
}

/* ── Animationen ────────────────────────────────────── */
@keyframes fadein {
  from {
    opacity: 0;
    transform: translateX(-80%);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}
@keyframes fadeout {
  from {
    opacity: 1;
    transform: translateX(0);
  }
  to {
    opacity: 0;
    transform: translateX(-100%);
  }
}

/* ── Hauptbereich ────────────────────────────────────── */
main {
  opacity: 0;
  margin-left: 15rem;
  padding: 2.5rem var(--pad) 3rem 2rem;
  animation: fadein 1.5s var(--ease) 1s both;
}
main.fade-out {
  animation: fadeout 1s cubic-bezier(0.3, 0.1, 0.3, 1) forwards;
}

/* ── Home ─────────────────────────────────────────── */
.home {
  line-height: 0.9;
  font-weight: 600;
  color: var(--accent);
  font-size: clamp(8.5rem, 14vw, 10rem);
}

/* ── Responsive ─────────────────────────────────────── */
@media (max-width: 1100px) {
  nav {
    width: 100%;
    line-height: 1.45;
    animation: none;
    font-size: 1.8rem;
    transform: translateX(-100%);
    transition: transform 0.3s ease;
    padding: var(--pad) var(--pad) 2rem 2.8rem;
  }
  body.nav-open nav {
    transform: translateX(0);
  }
  .hamburger {
    display: block;
  }
  main {
    margin-left: 0;
    grid-column: 1;
    padding: 4rem var(--pad);
  }
}
@media (max-width: 640px) {
  html {
    font-size: 16px;
  }
  main {
    padding: 4rem 2rem;
    animation: fadein 1.5s var(--ease) 0.3s both;
  }
}