:root {
  color-scheme: dark;
  --header-height: 5rem;
  --picker-collapsed-width: 7.25rem;
  --picker-expanded-width: min(22rem, calc(100vw - 2rem));
  --picker-inset: 1rem;
  --color-background: #0d0d0d;
  --color-surface: rgba(18, 18, 18, 0.9);
  --color-text: #f2f2ee;
  --color-muted: #92928c;
  --color-border: rgba(255, 255, 255, 0.14);
  --color-accent: #b8ff3d;
  font-family: Inter, "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
}

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

html,
body {
  min-width: 320px;
  min-height: 100%;
  margin: 0;
  overflow: hidden;
  color: var(--color-text);
  background: var(--color-background);
}

button,
a {
  color: inherit;
}

button {
  font: inherit;
}

a {
  text-decoration: none;
}

.site-header {
  position: relative;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
  padding-inline: clamp(1rem, 3vw, 3rem);
  background: rgba(13, 13, 13, 0.92);
  border-bottom: 1px solid var(--color-border);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  gap: 0.5rem;
  align-items: center;
  flex-shrink: 0;
  font-size: 0.78rem;
  font-weight: 650;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  white-space: nowrap;
}

.brand__icon {
  width: 1.1rem;
  height: 1.1rem;
  filter: drop-shadow(0 0 0.35rem rgba(120, 152, 255, 0.28));
  animation: brand-pulse 4.2s ease-in-out infinite;
}

.site-header__actions {
  display: flex;
  gap: 1rem;
  align-items: center;
}

.site-header__meta {
  margin: 0;
  color: var(--color-muted);
  font-size: 0.7rem;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.header-button {
  position: relative;
  overflow: hidden;
  padding: 0.6rem 0.85rem;
  color: var(--color-text);
  font-size: 0.65rem;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  cursor: pointer;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  transition: color 180ms ease, background-color 180ms ease, transform 180ms ease;
}

.header-button::after {
  position: absolute;
  inset: 0;
  content: "";
  background: linear-gradient(110deg, transparent 20%, rgba(255, 255, 255, 0.18), transparent 80%);
  transform: translateX(-130%);
  transition: transform 500ms ease;
}

.header-button:hover,
.header-button:focus-visible {
  color: #111;
  background: var(--color-accent);
  outline: none;
  transform: translateY(-1px);
}

.header-button:hover::after {
  transform: translateX(130%);
}

.showcase,
.shader-stage {
  position: relative;
  width: 100%;
  height: calc(100svh - var(--header-height));
  min-height: 24rem;
  overflow: hidden;
}

.showcase:fullscreen,
.showcase:fullscreen .shader-stage {
  height: 100svh;
}

.shader-stage {
  isolation: isolate;
  background:
    radial-gradient(circle at 25% 25%, #2b2340, transparent 32%),
    radial-gradient(circle at 70% 65%, #173b37, transparent 38%),
    linear-gradient(135deg, #111015, #060606);
}

.shader-stage::after {
  position: absolute;
  z-index: 1;
  inset: 0;
  pointer-events: none;
  content: "";
  background: linear-gradient(
    to top,
    rgba(0, 0, 0, 0.66),
    transparent 42%,
    rgba(0, 0, 0, 0.08)
  );
}

.shader-stage__canvas {
  position: absolute;
  inset: 0;
}

.shader-stage__canvas canvas {
  display: block;
  width: 100%;
  height: 100%;
  touch-action: none;
}

.shader-renderer {
  position: absolute;
  inset: 0;
  opacity: 1;
  transform: scale(1);
  transition:
    opacity 620ms cubic-bezier(0.22, 1, 0.36, 1),
    transform 900ms cubic-bezier(0.22, 1, 0.36, 1),
    filter 620ms ease;
}

.shader-renderer.is-entering {
  opacity: 0;
  filter: blur(12px);
  transform: scale(1.025);
}

.shader-renderer.is-leaving {
  opacity: 0;
  filter: blur(8px);
  transform: scale(0.99);
}

.shader-stage__canvas.is-loading .shader-renderer:not(.is-leaving) {
  filter: saturate(0.72) brightness(0.72);
}

.shader-status {
  position: absolute;
  z-index: 2;
  inset: 50% auto auto 50%;
  width: min(80%, 32rem);
  color: rgba(255, 255, 255, 0.46);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  line-height: 1.6;
  text-align: center;
  text-transform: uppercase;
  transform: translate(-50%, -50%);
  transition: opacity 240ms ease;
}

.shader-status:not(.is-error)::before {
  display: block;
  width: 1.5rem;
  height: 1.5rem;
  margin: 0 auto 1rem;
  content: "";
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-top-color: var(--color-accent);
  border-radius: 50%;
  animation: status-spin 800ms linear infinite;
}

.shader-status[hidden] {
  display: none;
}

.shader-status.is-error {
  color: #ff7979;
  letter-spacing: 0;
  text-transform: none;
}

.shader-status button {
  display: block;
  margin: 1rem auto 0;
  padding: 0.55rem 0.85rem;
  color: var(--color-text);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid currentColor;
  border-radius: 999px;
}

.shader-status button[hidden] {
  display: none;
}

.shader-stage__meta {
  position: absolute;
  z-index: 3;
  top: clamp(1.25rem, 3vw, 2.5rem);
  left: clamp(1.25rem, 4vw, 4rem);
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.9rem;
  align-items: start;
  width: min(31rem, calc(100% - 3rem));
  max-height: calc(100% - 2.5rem);
  padding: clamp(1rem, 2vw, 1.5rem);
  overflow-y: auto;
  pointer-events: auto;
  background: linear-gradient(135deg, rgba(12, 12, 16, 0.76), rgba(12, 12, 16, 0.38));
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 0.8rem;
  box-shadow: 0 1.25rem 4rem rgba(0, 0, 0, 0.28);
  backdrop-filter: blur(16px);
  overscroll-behavior: contain;
  scrollbar-color: rgba(255, 255, 255, 0.24) transparent;
  scrollbar-width: thin;
}

.shader-stage__index {
  padding-top: 0.25rem;
  color: var(--color-accent);
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 0.7rem;
}

.shader-stage__meta h1 {
  margin: 0;
  font-size: clamp(1.8rem, 3.2vw, 3.25rem);
  font-weight: 500;
  line-height: 1;
  letter-spacing: -0.04em;
}

.shader-stage__meta p {
  margin: 0.65rem 0 0;
  color: rgba(255, 255, 255, 0.62);
  font-size: clamp(0.78rem, 1.15vw, 0.92rem);
  line-height: 1.7;
}

.shader-stage__eyebrow {
  margin: 0 0 0.55rem !important;
  color: var(--color-accent) !important;
  font-size: 0.65rem !important;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.shader-stage__notes {
  display: grid;
  gap: 0.85rem;
  margin-top: 1.2rem;
  padding-top: 1rem;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}

.shader-stage__notes section {
  display: grid;
  gap: 0.25rem;
}

.shader-stage__notes h2 {
  margin: 0;
  color: rgba(255, 255, 255, 0.9);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.08em;
}

.shader-stage__notes p {
  margin: 0;
  color: rgba(255, 255, 255, 0.55);
  font-size: 0.78rem;
  line-height: 1.65;
}

.shader-picker {
  position: absolute;
  z-index: 10;
  inset: 0 0 0 auto;
  width: calc(var(--picker-expanded-width) + var(--picker-inset));
  pointer-events: none;
}

.shader-picker__toggle {
  position: absolute;
  z-index: 3;
  top: calc(var(--picker-inset) + 0.65rem);
  right: calc(var(--picker-inset) + 0.65rem);
  display: grid;
  width: 2.25rem;
  height: 2.25rem;
  padding: 0;
  place-items: center;
  color: var(--color-text);
  cursor: pointer;
  pointer-events: auto;
  background: rgba(255, 255, 255, 0.055);
  border: 1px solid var(--color-border);
  border-radius: 50%;
  backdrop-filter: blur(18px);
  transition: background-color 180ms ease, transform 300ms cubic-bezier(0.22, 1, 0.36, 1);
}

.shader-picker__toggle:hover,
.shader-picker__toggle:focus-visible {
  background: #222;
  outline: none;
}

.shader-picker__toggle span {
  font-size: 1rem;
  font-weight: 300;
  line-height: 1;
}

.shader-picker__panel {
  position: absolute;
  top: var(--picker-inset);
  right: var(--picker-inset);
  bottom: var(--picker-inset);
  display: flex;
  flex-direction: column;
  width: var(--picker-collapsed-width);
  overflow: hidden;
  pointer-events: auto;
  background: rgba(17, 17, 17, 0.72);
  border: 1px solid var(--color-border);
  border-radius: 0.8rem;
  box-shadow: 0 1.25rem 4rem rgba(0, 0, 0, 0.34);
  backdrop-filter: blur(24px);
  transform: translateX(0);
  transition:
    width 420ms cubic-bezier(0.22, 1, 0.36, 1),
    transform 360ms cubic-bezier(0.22, 1, 0.36, 1),
    background-color 240ms ease,
    box-shadow 240ms ease;
}

.shader-picker__panel:hover,
.shader-picker__panel:focus-within {
  width: var(--picker-expanded-width);
  background: rgba(17, 17, 17, 0.9);
  box-shadow: 0 1.5rem 5rem rgba(0, 0, 0, 0.48);
}

.shader-picker[data-open="false"] .shader-picker__toggle {
  background: rgba(12, 12, 12, 0.76);
  transform: rotate(-90deg);
}

.shader-picker[data-open="false"] .shader-picker__panel {
  transform: translateX(calc(100% + var(--picker-inset) * 2));
}

.shader-picker__header {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  min-height: 3.55rem;
  padding: 1rem 3.3rem 1rem 1rem;
  border-bottom: 1px solid var(--color-border);
}

.shader-picker__header p,
.shader-picker__header span {
  margin: 0;
  font-size: 0.68rem;
  letter-spacing: 0.11em;
  text-transform: uppercase;
  opacity: 0;
  white-space: nowrap;
  transform: translateX(8px);
  transition: opacity 180ms ease, transform 300ms ease;
}

.shader-picker__header span {
  margin-left: auto;
  color: var(--color-muted);
}

.shader-picker__panel:hover .shader-picker__header p,
.shader-picker__panel:hover .shader-picker__header span,
.shader-picker__panel:focus-within .shader-picker__header p,
.shader-picker__panel:focus-within .shader-picker__header span {
  opacity: 1;
  transform: translateX(0);
  transition-delay: 100ms;
}

.shader-list {
  display: flex;
  flex: 1;
  flex-direction: column;
  gap: 0.75rem;
  padding: 0.75rem;
  overflow-x: hidden;
  overflow-y: auto;
  overscroll-behavior: contain;
  scrollbar-color: rgba(255, 255, 255, 0.24) transparent;
  scrollbar-width: thin;
}

.shader-list__item {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  align-items: center;
  width: 100%;
  padding: 0.45rem;
  color: var(--color-text);
  text-align: left;
  cursor: pointer;
  background: transparent;
  border: 1px solid transparent;
  border-radius: 0.35rem;
  transition:
    background-color 180ms ease,
    border-color 180ms ease,
    grid-template-columns 420ms cubic-bezier(0.22, 1, 0.36, 1),
    transform 220ms ease;
  animation: list-item-enter 520ms both cubic-bezier(0.22, 1, 0.36, 1);
  animation-delay: calc(var(--item-index) * 55ms);
}

.shader-list__item:hover,
.shader-list__item:focus-visible {
  background: rgba(255, 255, 255, 0.055);
  border-color: var(--color-border);
  outline: none;
  transform: translateX(-2px);
}

.shader-list__item.is-active {
  background: rgba(255, 255, 255, 0.075);
  border-color: rgba(184, 255, 61, 0.5);
}

.shader-list__preview {
  display: block;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border-radius: 0.2rem;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.08);
  transition: transform 320ms cubic-bezier(0.22, 1, 0.36, 1), border-radius 240ms ease;
}

.shader-list__item:hover .shader-list__preview,
.shader-list__item:focus-visible .shader-list__preview {
  border-radius: 0.35rem;
  transform: scale(1.035);
}

.shader-picker__panel:hover .shader-list__item,
.shader-picker__panel:focus-within .shader-list__item {
  grid-template-columns: 5.5rem minmax(0, 1fr) auto;
  gap: 0.9rem;
  padding: 0.65rem;
}

.shader-list__preview--monolith {
  background:
    linear-gradient(115deg, transparent 30%, rgba(207, 150, 255, 0.8) 31% 45%, transparent 46%),
    radial-gradient(circle at 70% 25%, #75449b, transparent 35%),
    linear-gradient(145deg, #0a101b, #291936);
}

.shader-list__preview--metaballs {
  background:
    radial-gradient(circle at 28% 38%, #ff613f 0 13%, transparent 14%),
    radial-gradient(circle at 58% 62%, #ff365e 0 19%, transparent 20%),
    radial-gradient(circle at 76% 27%, #26ddc9 0 14%, transparent 15%),
    linear-gradient(145deg, #071720, #173b45);
}

.shader-list__preview--temple {
  background:
    repeating-radial-gradient(ellipse at center, transparent 0 10%, #1768aa 11% 13%, transparent 14% 22%),
    linear-gradient(90deg, #080a1e, #35104b 50%, #080a1e);
}

.shader-list__preview--gyroid {
  background:
    repeating-linear-gradient(45deg, transparent 0 6px, rgba(255, 193, 94, 0.3) 7px 9px),
    radial-gradient(circle at center, #e54b9f, #39206e 48%, #080611 72%);
}

.shader-list__copy {
  position: absolute;
  min-width: 0;
  opacity: 0;
  pointer-events: none;
  transform: translateX(8px);
  transition: opacity 180ms ease, transform 300ms ease;
}

.shader-list__copy strong,
.shader-list__copy small {
  display: block;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.shader-list__copy strong {
  font-size: 0.78rem;
  font-weight: 550;
}

.shader-list__copy small,
.shader-list__number {
  margin-top: 0.35rem;
  color: var(--color-muted);
  font-size: 0.67rem;
}

.shader-list__loading {
  margin: auto;
  color: var(--color-muted);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.shader-picker__footer {
  display: flex;
  gap: 1.25rem;
  max-height: 0;
  padding: 0 1.5rem;
  color: var(--color-muted);
  font-size: 0.62rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  overflow: hidden;
  white-space: nowrap;
  border-top: 1px solid transparent;
  opacity: 0;
  transition:
    max-height 320ms ease,
    padding 320ms ease,
    opacity 180ms ease,
    border-color 180ms ease;
}

.shader-picker__panel:hover .shader-picker__footer,
.shader-picker__panel:focus-within .shader-picker__footer {
  max-height: 4rem;
  padding: 1rem 1.5rem;
  border-color: var(--color-border);
  opacity: 1;
  transition-delay: 100ms;
}

.shader-picker__footer kbd {
  display: inline-grid;
  min-width: 1.4rem;
  height: 1.4rem;
  margin-right: 0.35rem;
  padding-inline: 0.3rem;
  place-items: center;
  color: var(--color-text);
  font-family: inherit;
  font-size: 0.58rem;
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid var(--color-border);
  border-radius: 0.2rem;
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.14);
}

.shader-list__number {
  position: absolute;
  margin: 0;
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  opacity: 0;
  pointer-events: none;
  transition: opacity 180ms ease;
}

.shader-picker__panel:hover .shader-list__copy,
.shader-picker__panel:hover .shader-list__number,
.shader-picker__panel:focus-within .shader-list__copy,
.shader-picker__panel:focus-within .shader-list__number {
  position: static;
  opacity: 1;
  pointer-events: auto;
  transform: translateX(0);
  transition-delay: 110ms;
}

.noscript-message {
  position: fixed;
  z-index: 30;
  inset: auto 1rem 1rem;
  padding: 1rem;
  color: #ff7979;
  text-align: center;
  background: #181818;
  border: 1px solid currentColor;
}

@media (max-width: 640px) {
  :root {
    --header-height: 4.25rem;
    --picker-collapsed-width: 5.5rem;
    --picker-expanded-width: calc(100vw - 1.5rem);
    --picker-inset: 0.75rem;
  }

  .site-header__meta {
    display: none;
  }

  .shader-stage__meta {
    top: 1rem;
    bottom: auto;
    left: 1.25rem;
    width: calc(100% - 2.5rem);
    max-height: calc(100% - 2rem);
    grid-template-columns: auto 1fr;
    gap: 0.65rem;
    padding: 1rem;
  }

  .shader-stage__meta h1 {
    max-width: none;
    font-size: clamp(1.55rem, 7vw, 2.25rem);
  }

  .shader-stage__meta p {
    max-width: none;
  }

}

@media (prefers-reduced-motion: reduce) {
  .brand__icon,
  .shader-status:not(.is-error)::before,
  .shader-list__item {
    animation: none;
  }

  .shader-picker__toggle,
  .shader-picker__panel,
  .shader-list__item,
  .shader-renderer {
    transition-duration: 0.01ms;
  }
}

@keyframes brand-pulse {
  0%,
  100% {
    filter: drop-shadow(0 0 0.35rem rgba(120, 152, 255, 0.2));
    transform: scale(0.96);
  }

  50% {
    filter: drop-shadow(0 0 0.8rem rgba(128, 255, 206, 0.45));
    transform: scale(1.08);
  }
}

@keyframes status-spin {
  to {
    transform: rotate(1turn);
  }
}

@keyframes list-item-enter {
  from {
    opacity: 0;
    transform: translateX(18px);
  }

  to {
    opacity: 1;
    transform: translateX(0);
  }
}