:root {
  --kaien-background: #fdfdfd;
  --kaien-foreground: #111111;
  --kaien-muted: #f5f5f6;
  --kaien-muted-foreground: #6b7280;
  --kaien-border: rgba(17, 17, 17, 0.09);
  --kaien-accent: #6f5cff;
  --kaien-accent-soft: rgba(111, 92, 255, 0.12);
  --kaien-radius: 10px;
}

html.dark {
  --kaien-background: #0a0a0a;
  --kaien-foreground: #f5f5f5;
  --kaien-muted: #151518;
  --kaien-muted-foreground: #9ca3af;
  --kaien-border: rgba(245, 245, 245, 0.1);
  --kaien-accent: #a78bfa;
  --kaien-accent-soft: rgba(167, 139, 250, 0.14);
}

body {
  background:
    radial-gradient(circle at 14% 0%, var(--kaien-accent-soft), transparent 26rem),
    linear-gradient(180deg, var(--kaien-background), var(--kaien-background));
  color: var(--kaien-foreground);
  letter-spacing: -0.01em;
}

::selection {
  background: #111111;
  color: #ffffff;
}

html.dark ::selection {
  background: #f5f5f5;
  color: #0a0a0a;
}

#navbar-transition {
  border-color: var(--kaien-border) !important;
}

#navbar-transition[data-is-opaque="true"] {
  background: color-mix(in srgb, var(--kaien-background) 88%, transparent) !important;
  backdrop-filter: blur(20px) saturate(1.2);
}

.nav-logo {
  letter-spacing: -0.045em !important;
}

#sidebar-content {
  scrollbar-width: thin;
  scrollbar-color: color-mix(in srgb, var(--kaien-foreground) 22%, transparent) transparent;
}

@media (min-width: 1024px) {
  #sidebar {
    background: var(--kaien-background);
    border-right: 1px solid var(--kaien-border);
  }

  #sidebar-content {
    background: var(--kaien-background);
  }
}

.sidebar-group-header {
  color: var(--kaien-foreground) !important;
}

#sidebar-group a,
#sidebar-group button {
  border-radius: var(--kaien-radius) !important;
  box-shadow: none !important;
  transition:
    background-color 160ms ease,
    color 160ms ease,
    opacity 160ms ease !important;
}

#sidebar-group a:hover,
#sidebar-group button:hover {
  background: var(--kaien-muted) !important;
}

#sidebar-group li:not([data-active="true"]) > a[class*="bg-primary"],
#sidebar-group li:not([data-active="true"]) > a[class*="bg-primary-light"] {
  background: transparent !important;
  color: inherit !important;
  text-shadow: none !important;
}

#sidebar-group li[data-active="true"] > a,
#sidebar-group [data-active="true"] > a {
  position: relative;
  background: color-mix(in srgb, var(--kaien-accent) 10%, transparent) !important;
  color: var(--kaien-foreground) !important;
  box-shadow: none !important;
  text-shadow: none !important;
}

#sidebar-group li[data-active="true"] > a::before,
#sidebar-group [data-active="true"] > a::before {
  content: "";
  position: absolute;
  left: 0.45rem;
  top: 0.55rem;
  bottom: 0.55rem;
  width: 2px;
  border-radius: 999px;
  background: var(--kaien-accent);
}

#search-bar-entry,
#search-bar-entry-mobile {
  border-color: var(--kaien-border) !important;
  background: color-mix(in srgb, var(--kaien-background) 72%, transparent) !important;
  box-shadow: 0 1px 0 rgba(17, 17, 17, 0.04);
}

#search-bar-entry:hover,
#search-bar-entry-mobile:hover {
  border-color: color-mix(in srgb, var(--kaien-foreground) 24%, transparent) !important;
  background: var(--kaien-background) !important;
}

article h1,
article h2,
article h3 {
  letter-spacing: -0.035em;
}

article h1 {
  font-weight: 680 !important;
}

article a {
  text-underline-offset: 3px;
}

pre,
code {
  border-radius: var(--kaien-radius);
}

pre {
  border: 1px solid var(--kaien-border) !important;
  box-shadow: 0 16px 40px -28px rgba(17, 17, 17, 0.38);
}