/* NAVBAR (Desktop) */
.nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 200;
  backdrop-filter: blur(14px) saturate(120%);
  background: color-mix(in oklab, var(--bg) 83%, transparent);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 4px 12px var(--shadow-hard);
  transition: transform .3s cubic-bezier(0.4, 0, 0.2, 1), padding .3s ease, background .3s ease, box-shadow .3s ease;
  will-change: transform;
}
body {
  padding-top: 88px;
}

.nav.shrink {
  padding-block: 4px;
  background: color-mix(in oklab, var(--bg) 94%, transparent);
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  box-shadow: 0 3px 12px rgba(0, 0, 0, 0.35);
}
.nav.hide {
  transform: translateY(-100%);
}
.nav:not(.hide) {
  transform: translateY(0);
}

.nav-inner {
  max-width: 1300px;
  margin: 0 auto;
  padding: 18px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: relative;
}

.brand {
  position: absolute;
  left: 24px;
  display: flex;
  gap: 10px;
  align-items: center;
}
.brand img {
  width: 28px;
  height: 28px;
}
.brand span {
  font-size: 20px;
  font-weight: 800;
  letter-spacing: .4px;
}

/* Menu (Desktop only) */
.menu {
  display: flex;
  gap: 6px;
  align-items: center;
  justify-content: center;
  margin: 0 auto;
  position: relative;
}
.menu a {
  position: relative;
  padding: 0 18px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 11px;
  color: var(--muted);
  white-space: nowrap;
  transition: background .22s, color .22s;
  text-align: center;
  font-size: 15px;
  font-weight: 500;
}
.menu a:hover {
  color: var(--text);
}
.menu a.active {
  color: var(--text);
  font-weight: 600;
  background: color-mix(in oklab, var(--card) 90%, transparent);
  box-shadow: 0 0 10px rgba(59, 130, 246, 0.3);
}

.menu a.active::after {
  width: 80%;
  background: var(--accent);
}

.menu a::after {
  content: "";
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  bottom: 4px;
  width: 0;
  height: 2px;
  border-radius: 4px;
  background: var(--accent);
  transition: width .25s cubic-bezier(0.4, 0, 0.2, 1);
}
.menu a:hover::after {
  width: 60%;
}

.header-actions {
  position: absolute;
  right: 24px;
  width: 160px;
  display: flex;
  gap: 16px;
  justify-content: flex-end;
}
.toggle {
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text);
  padding: 10px 12px;
  border-radius: 12px;
  cursor: pointer;
  transition: .25s;
  font-size: 18px;
}
.toggle:hover {
  background: color-mix(in oklab, var(--accent) 10%, var(--card));
  border-color: var(--accent);
}

/* HERO */
.hero {
  position: relative;
  border: 1px solid var(--border);
  border-radius: 20px;
  overflow: visible;
  background: radial-gradient(
      1000px 450px at 50% 120%,
      color-mix(in oklab, var(--accent) 22%, transparent),
      transparent 65%
    ), linear-gradient(180deg, color-mix(in oklab, var(--card) 70%, transparent), var(--bg));
  padding: 160px 32px;
  display: grid;
  place-items: center;
  text-align: center;
  gap: 16px;
  box-shadow: 0 8px 20px var(--shadow-hard), 0 0 24px var(--shadow-primary);
}
.hero h1 {
  font-size: clamp(28px, 5vw, 42px);
  line-height: 1.1;
  margin: 0;
}
.hero p {
  max-width: 680px;
  margin: 0 auto;
  color: var(--muted);
}
.diamond-wrap {
  position: absolute;
  bottom: -15px;
  left: 50%;
  transform: translateX(-50%);
  opacity: 0.42;
  z-index: 10;
  filter: drop-shadow(0 18px 35px rgba(60, 130, 255, 0.3));
}
.diamond {
  width: 160px;
  animation: float 6s ease-in-out infinite;
}
@keyframes float {
  0%,
  100% {
    transform: translateY(0) rotate(0);
  }
  50% {
    transform: translateY(-10px) rotate(1deg);
  }
}

/* SIDEBAR (Mobile) */
.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  height: 100vh;
  width: min(280px, 85vw);
  z-index: 300;
  background: linear-gradient(135deg, var(--card), color-mix(in oklab, var(--card) 95%, var(--bg)));
  border-right: 1px solid var(--border);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
  transform: translateX(-100%);
  transition: transform .35s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.sidebar.open {
  transform: translateX(0);
}

.sidebar-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 18px;
  border-bottom: 1px solid var(--border);
  font-weight: 700;
  font-size: 16px;
  flex-shrink: 0;
  background: color-mix(in oklab, var(--card) 98%, var(--accent) 2%);
}

.sidebar-left {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 16px 12px;
  overflow-y: auto;
  flex: 1;
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}

.sidebar-left a {
  padding: 16px 16px;
  border-radius: 14px;
  border: 1px solid transparent;
  background: color-mix(in oklab, var(--card) 90%, var(--bg));
  color: var(--text);
  font-size: 15px;
  font-weight: 500;
  transition: all .22s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  align-items: center;
  gap: 12px;
  position: relative;
}

.sidebar-left a:hover {
  background: color-mix(in oklab, var(--accent) 12%, var(--card));
  border-color: var(--accent);
  transform: translateX(4px);
}

.sidebar-left a.active {
  background: linear-gradient(
    135deg,
    color-mix(in oklab, var(--accent) 20%, var(--card)),
    color-mix(in oklab, var(--accent) 15%, var(--card))
  );
  border-color: var(--accent);
  box-shadow: 0 0 12px rgba(59, 130, 246, 0.2);
  color: var(--text);
}

.sidebar-left a::before {
  content: "";
  width: 3px;
  height: 0;
  background: var(--accent);
  border-radius: 3px;
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  transition: height .22s cubic-bezier(0.4, 0, 0.2, 1);
}

.sidebar-left a.active::before {
  height: 24px;
}

.sidebar-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
  backdrop-filter: blur(4px);
  opacity: 0;
  pointer-events: none;
  transition: opacity .25s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 250;
}
.sidebar-overlay.show {
  opacity: 1;
  pointer-events: auto;
}

/* Hamburger (Mobile only) */
.hamburger {
  display: block;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--card);
  cursor: pointer;
  position: absolute;
  right: 24px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 500;
  transition: all .25s;
  padding: 0;
}

.hamburger:hover {
  background: color-mix(in oklab, var(--accent) 8%, var(--card));
  border-color: var(--accent);
}

.hamburger span {
  display: block;
  height: 2.5px;
  width: 20px;
  background: var(--text);
  border-radius: 2px;
  margin: 7px auto;
  transition: all .3s cubic-bezier(0.4, 0, 0.2, 1);
}

.hamburger.open span:nth-child(1) {
  transform: rotate(45deg) translate(8px, 8px);
}
.hamburger.open span:nth-child(2) {
  opacity: 0;
}
.hamburger.open span:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -7px);
}

/* Sichtbarkeit für Desktop & Mobile */
@media (min-width: 1025px) {
  .menu {
    display: flex !important;
  }
  .hamburger {
    display: none !important;
  }
  .header-actions {
    display: flex !important;
  }
  .sidebar,
  .sidebar-overlay {
    display: none !important;
  }
}

@media (max-width: 1024px) {
  .menu,
  .header-actions {
    display: none !important;
  }
  .hamburger {
    display: block !important;
  }
  .sidebar,
  .sidebar-overlay {
    display: block !important;
  }
}

@media (max-width: 768px) {
  .container {
    padding: 20px 16px;
  }
  .sidebar-left a {
    padding: 18px 14px;
  }
}

@media (max-width: 480px) {
  .sidebar {
    width: 100vw;
  }
  .sidebar-header {
    padding: 16px 14px;
  }
  .sidebar-left {
    padding: 12px 8px;
  }
  .sidebar-left a {
    padding: 14px 12px;
    font-size: 14px;
  }
}