@font-face {
  font-family: "Jost";
  src: url("/assets/fonts/jost-variable.woff2") format("woff2");
  font-weight: 400 700;
  font-display: swap;
}

@font-face {
  font-family: "IBM Plex Mono";
  src: url("/assets/fonts/ibm-plex-mono-400.woff2") format("woff2");
  font-weight: 400;
  font-display: swap;
}

@font-face {
  font-family: "IBM Plex Mono";
  src: url("/assets/fonts/ibm-plex-mono-500.woff2") format("woff2");
  font-weight: 500;
  font-display: swap;
}

:root {
  --bg: #08080b;
  --surface: #0e0f14;
  --surface-raised: #14151b;
  --surface-soft: #191a21;
  --ink: #f1f0e8;
  --muted: #9897a0;
  --dim: #676771;
  --line: #2c2d35;
  --line-bright: #484952;
  --acid: #caff4a;
  --acid-dim: #6a812d;
  --pink: #ff50ad;
  --cyan: #72e9f5;
  --danger: #ff7474;
  --panel-width: 22rem;
  color-scheme: dark;
  font-family: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  background: var(--bg);
  color: var(--ink);
}

* { box-sizing: border-box; }

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

body {
  min-height: 100svh;
  overflow: hidden;
  font-size: 12px;
  letter-spacing: 0.01em;
}

button,
input {
  font: inherit;
}

button {
  color: inherit;
}

button:focus-visible,
input:focus-visible,
summary:focus-visible,
a:focus-visible {
  outline: 2px solid var(--acid);
  outline-offset: 3px;
}

a { color: inherit; }

.skip-link {
  position: fixed;
  top: 0.7rem;
  left: 0.8rem;
  z-index: 20;
  padding: 0.6rem 0.8rem;
  background: var(--acid);
  color: #101208;
  transform: translateY(-180%);
  transition: transform 140ms ease;
}

.skip-link:focus { transform: translateY(0); }

.app-shell {
  display: grid;
  grid-template-rows: 4.25rem minmax(0, 1fr);
  height: 100svh;
  background:
    linear-gradient(90deg, rgba(255, 80, 173, 0.025), transparent 38%),
    var(--bg);
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-width: 0;
  padding: 0 1.15rem 0 1.35rem;
  border-bottom: 1px solid var(--line);
  background: rgba(8, 8, 11, 0.93);
}

.brand-lockup,
.topbar-right,
.signal-readout {
  display: flex;
  align-items: center;
}

.brand-lockup { gap: 1rem; min-width: 0; }

.brand {
  font-family: "Jost", Arial, sans-serif;
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: -0.06em;
  text-decoration: none;
  text-transform: lowercase;
}

.brand span { color: var(--pink); }

.brand-note {
  padding-left: 1rem;
  border-left: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.61rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  white-space: nowrap;
}

.topbar-right { gap: 1.4rem; }

.signal-readout {
  gap: 0.5rem;
  color: var(--muted);
  font-size: 0.62rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  white-space: nowrap;
}

.signal-dot {
  width: 0.42rem;
  height: 0.42rem;
  border-radius: 50%;
  background: var(--acid);
  box-shadow: 0 0 0 3px rgba(202, 255, 74, 0.11);
}

.signal-dot.live { background: var(--pink); box-shadow: 0 0 0 3px rgba(255, 80, 173, 0.12); }
.signal-dot.error { background: var(--danger); box-shadow: 0 0 0 3px rgba(255, 116, 116, 0.12); }

.home-link {
  color: var(--ink);
  font-size: 0.68rem;
  text-decoration: none;
  text-transform: lowercase;
}

.home-link:hover { color: var(--acid); }

.workspace {
  display: grid;
  grid-template-columns: minmax(0, 1fr) var(--panel-width);
  min-height: 0;
}

.stage-shell {
  position: relative;
  min-width: 0;
  min-height: 0;
  overflow: hidden;
  background:
    radial-gradient(circle at 50% 48%, rgba(33, 36, 49, 0.42), transparent 55%),
    #09090d;
  isolation: isolate;
}

#gl-canvas {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 0;
  background: #09090d;
}

.stage-vignette,
.stage-scanlines,
.stage-readout {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.stage-vignette {
  z-index: 1;
  background:
    linear-gradient(90deg, rgba(8, 8, 11, 0.22), transparent 22%, transparent 78%, rgba(8, 8, 11, 0.34)),
    radial-gradient(ellipse at center, transparent 54%, rgba(8, 8, 11, 0.68) 100%);
  mix-blend-mode: multiply;
}

.stage-scanlines {
  z-index: 2;
  opacity: 0.15;
  background: repeating-linear-gradient(0deg, transparent 0, transparent 3px, rgba(240, 238, 231, 0.12) 3px, rgba(240, 238, 231, 0.12) 4px);
  mix-blend-mode: overlay;
}

.stage-readout {
  z-index: 3;
  inset: auto 1.15rem 1rem;
  display: flex;
  justify-content: space-between;
  height: auto;
  color: rgba(241, 240, 232, 0.57);
  font-size: 0.58rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.empty-state {
  position: absolute;
  z-index: 4;
  top: 50%;
  left: 50%;
  width: min(25rem, calc(100% - 3rem));
  transform: translate(-50%, -50%);
  text-align: center;
}

.empty-state.is-hidden { display: none; }

.empty-mark {
  margin-bottom: 1.2rem;
  color: var(--pink);
  font-family: "Jost", Arial, sans-serif;
  font-size: clamp(2.6rem, 8vw, 5.2rem);
  font-weight: 700;
  letter-spacing: -0.14em;
  line-height: 0.7;
  text-indent: -0.12em;
  text-shadow: 0 0 32px rgba(255, 80, 173, 0.23);
}

.empty-title {
  margin: 0;
  color: var(--ink);
  font-family: "Jost", Arial, sans-serif;
  font-size: clamp(1.45rem, 3vw, 2.3rem);
  font-weight: 500;
  letter-spacing: -0.06em;
}

.empty-copy {
  max-width: 34rem;
  margin: 0.75rem auto 0;
  color: var(--muted);
  font-size: 0.72rem;
  line-height: 1.8;
}

.empty-actions {
  display: flex;
  justify-content: center;
  gap: 0.55rem;
  margin-top: 1.35rem;
}

.empty-footnote {
  margin: 1.2rem 0 0;
  color: var(--dim);
  font-size: 0.61rem;
}

/* Author display rules (e.g. display: grid) would otherwise beat the hidden attribute */
[hidden] { display: none !important; }

.stage-error {
  position: absolute;
  z-index: 5;
  right: 1.2rem;
  bottom: 2.8rem;
  left: 1.2rem;
  display: grid;
  gap: 0.35rem;
  max-width: 29rem;
  padding: 0.9rem 1rem;
  border-left: 2px solid var(--danger);
  background: rgba(34, 13, 20, 0.91);
  color: var(--ink);
}

.stage-error strong {
  color: var(--danger);
  font-size: 0.67rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.stage-error span { color: #d7b6be; font-size: 0.68rem; line-height: 1.55; }

.control-panel {
  z-index: 8;
  min-width: 0;
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: 1.4rem 1.25rem 1.2rem;
  border-left: 1px solid var(--line);
  background: var(--surface);
  scrollbar-color: var(--line-bright) transparent;
}

.panel-heading,
.section-heading,
.slider-label,
.toggle-control,
.button-row {
  display: flex;
  align-items: center;
}

.panel-heading,
.section-heading { justify-content: space-between; }

.panel-heading { margin-bottom: 1.65rem; }

.panel-heading h1 {
  margin: 0.28rem 0 0;
  color: var(--ink);
  font-family: "Jost", Arial, sans-serif;
  font-size: 1.2rem;
  font-weight: 500;
  letter-spacing: -0.04em;
}

.section-kicker {
  margin: 0;
  color: var(--acid);
  font-size: 0.56rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.control-section {
  padding: 0 0 1.25rem;
  margin-bottom: 1.25rem;
  border-bottom: 1px solid var(--line);
}

.section-heading h2 {
  margin: 0;
  color: var(--ink);
  font-size: 0.67rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.section-state {
  color: var(--dim);
  font-size: 0.57rem;
  text-transform: lowercase;
}

.button-row {
  gap: 0.45rem;
}

.source-row { margin-top: 0.85rem; }

.button {
  min-height: 2.15rem;
  padding: 0.55rem 0.7rem;
  border: 1px solid var(--line-bright);
  border-radius: 2px;
  background: transparent;
  cursor: pointer;
  font-size: 0.61rem;
  line-height: 1;
  text-transform: lowercase;
  transition: border-color 140ms ease, background-color 140ms ease, color 140ms ease, transform 140ms ease;
}

.button:hover { border-color: var(--ink); }
.button:active { transform: translateY(1px); }
.button-primary { border-color: var(--acid); background: var(--acid); color: #111407; }
.button-primary:hover { border-color: #e4ff9b; background: #e4ff9b; color: #111407; }
.button-quiet { color: var(--ink); }
.button-square { width: 2.15rem; padding: 0; color: var(--cyan); font-size: 1.05rem; }
.button-wide { width: 100%; margin-top: 0.55rem; color: var(--muted); }
.button:disabled { cursor: not-allowed; opacity: 0.45; }

.control-note {
  min-height: 1rem;
  margin: 0.7rem 0 0;
  color: var(--muted);
  font-size: 0.61rem;
  line-height: 1.5;
}

.preset-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.42rem;
  margin-top: 0.85rem;
}

.preset-button {
  min-height: 2.5rem;
  padding: 0.55rem 0.55rem;
  border: 1px solid var(--line);
  border-radius: 2px;
  background: var(--surface-raised);
  color: var(--muted);
  cursor: pointer;
  font-size: 0.58rem;
  line-height: 1.25;
  text-align: left;
  text-transform: lowercase;
  transition: border-color 140ms ease, color 140ms ease, background-color 140ms ease;
}

.preset-button:last-child { grid-column: 1 / -1; }
.preset-button:hover,
.preset-button[aria-pressed="true"] { border-color: var(--pink); background: rgba(255, 80, 173, 0.09); color: var(--ink); }

.parameter-section { padding-bottom: 0.9rem; }
.slider-stack { display: grid; gap: 0.8rem; margin-top: 1rem; }

.slider-control { display: grid; gap: 0.42rem; cursor: pointer; }
.slider-label { justify-content: space-between; color: var(--muted); font-size: 0.62rem; }
.slider-label output { color: var(--acid); font-size: 0.59rem; }

input[type="range"] {
  width: 100%;
  height: 1rem;
  margin: 0;
  appearance: none;
  background: transparent;
  cursor: pointer;
}

input[type="range"]::-webkit-slider-runnable-track {
  height: 2px;
  background: linear-gradient(90deg, var(--acid) var(--range-progress, 50%), var(--line-bright) var(--range-progress, 50%));
}

input[type="range"]::-moz-range-track {
  height: 2px;
  background: var(--line-bright);
}

input[type="range"]::-moz-range-progress { height: 2px; background: var(--acid); }

input[type="range"]::-webkit-slider-thumb {
  width: 0.62rem;
  height: 0.62rem;
  margin-top: -0.25rem;
  appearance: none;
  border: 1px solid var(--acid);
  border-radius: 50%;
  background: var(--surface);
}

input[type="range"]::-moz-range-thumb {
  width: 0.55rem;
  height: 0.55rem;
  border: 1px solid var(--acid);
  border-radius: 50%;
  background: var(--surface);
}

.toggle-control {
  justify-content: space-between;
  gap: 1rem;
  margin-top: 1rem;
  padding-top: 0.9rem;
  border-top: 1px solid var(--line);
  cursor: pointer;
}

.toggle-control strong,
.toggle-control small { display: block; }
.toggle-control strong { color: var(--ink); font-size: 0.64rem; font-weight: 400; }
.toggle-control small { margin-top: 0.25rem; color: var(--dim); font-size: 0.57rem; }
.toggle-control input { position: absolute; width: 1px; height: 1px; opacity: 0; }

.toggle-ui {
  position: relative;
  flex: 0 0 auto;
  width: 2rem;
  height: 1.1rem;
  border: 1px solid var(--line-bright);
  border-radius: 99px;
  background: var(--surface-soft);
  transition: border-color 140ms ease, background-color 140ms ease;
}

.toggle-ui::after {
  position: absolute;
  top: 0.18rem;
  left: 0.2rem;
  width: 0.62rem;
  height: 0.62rem;
  border-radius: 50%;
  background: var(--dim);
  content: "";
  transition: transform 140ms ease, background-color 140ms ease;
}

.toggle-control input:checked + .toggle-ui { border-color: var(--acid-dim); background: rgba(202, 255, 74, 0.12); }
.toggle-control input:checked + .toggle-ui::after { transform: translateX(0.82rem); background: var(--acid); }
.toggle-control input:focus-visible + .toggle-ui { outline: 2px solid var(--acid); outline-offset: 3px; }

.action-section .button-row { margin-top: 0.85rem; }
.action-section .button-row .button { flex: 1; }

.help-panel {
  margin-bottom: 1.2rem;
  border-bottom: 1px solid var(--line);
}

.help-panel summary {
  padding-bottom: 0.8rem;
  color: var(--ink);
  cursor: pointer;
  font-size: 0.64rem;
  letter-spacing: 0.1em;
  list-style-position: outside;
  text-transform: uppercase;
}

.shortcut-list {
  display: grid;
  gap: 0.5rem;
  margin: 0;
  padding: 0 0 1rem;
}

.shortcut-list div { display: flex; align-items: baseline; gap: 0.7rem; }
.shortcut-list dt { width: 1.1rem; color: var(--acid); font-size: 0.64rem; text-align: center; }
.shortcut-list dd { margin: 0; color: var(--muted); font-size: 0.61rem; }

.privacy-note {
  margin: 0;
  color: var(--dim);
  font-size: 0.57rem;
  line-height: 1.6;
}

.icon-button {
  min-width: 2rem;
  min-height: 2rem;
  padding: 0;
  border: 1px solid var(--line-bright);
  border-radius: 2px;
  background: transparent;
  color: var(--ink);
  cursor: pointer;
  font-size: 1.15rem;
  line-height: 1;
}

.mobile-only,
.mobile-bar,
.drawer-grip { display: none; }

.drop-overlay {
  position: fixed;
  z-index: 15;
  inset: 0;
  display: grid;
  place-items: center;
  background: rgba(9, 8, 14, 0.82);
  opacity: 0;
  pointer-events: none;
  transition: opacity 160ms ease;
}

.drop-overlay.is-active { opacity: 1; pointer-events: auto; }

.drop-card {
  display: grid;
  gap: 0.7rem;
  width: min(24rem, calc(100% - 2rem));
  padding: 2rem;
  border: 1px solid var(--pink);
  background: var(--surface);
  color: var(--ink);
  text-align: center;
  box-shadow: 0 0 0 0.45rem rgba(255, 80, 173, 0.08);
}

.drop-card strong { font-family: "Jost", Arial, sans-serif; font-size: 1.5rem; font-weight: 500; letter-spacing: -0.04em; }
.drop-card span { color: var(--muted); font-size: 0.62rem; }

.noscript-message {
  position: fixed;
  inset: 1rem;
  z-index: 30;
  padding: 1rem;
  background: var(--surface-raised);
  color: var(--ink);
}

@media (max-width: 900px) {
  body { overflow: auto; }

  .app-shell {
    display: block;
    height: auto;
    min-height: 100svh;
    padding-bottom: 4.1rem;
  }

  .topbar { min-height: 4rem; padding: 0 1rem; }
  .brand-note, .home-link { display: none; }
  .topbar-right { gap: 0; }
  .workspace { display: block; min-height: calc(100svh - 4rem); }
  .stage-shell { min-height: calc(100svh - 4rem); }
  .stage-readout { bottom: 1.25rem; }

  .app-shell.controls-open::before {
    position: fixed;
    z-index: 7;
    inset: 0;
    background: rgba(8, 8, 11, 0.7);
    content: "";
  }

  .control-panel {
    position: fixed;
    right: 0;
    bottom: 0;
    left: 0;
    max-height: min(88svh, 46rem);
    padding: 0.75rem 1rem 5rem;
    border-top: 1px solid var(--line-bright);
    border-left: 0;
    border-radius: 10px 10px 0 0;
    transform: translateY(105%);
    transition: transform 220ms cubic-bezier(0.2, 0.7, 0.2, 1);
  }

  .app-shell.controls-open .control-panel { transform: translateY(0); }
  .drawer-grip { display: block; width: 2.4rem; height: 3px; margin: 0 auto 0.8rem; border-radius: 99px; background: var(--line-bright); }
  .mobile-only { display: block; }
  .panel-heading { margin-bottom: 1.25rem; }

  .mobile-bar {
    position: fixed;
    z-index: 10;
    right: 0;
    bottom: 0;
    left: 0;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    min-height: 4.1rem;
    padding: 0.35rem 0.5rem max(0.35rem, env(safe-area-inset-bottom));
    border-top: 1px solid var(--line);
    background: rgba(14, 15, 20, 0.97);
  }

  .mobile-action {
    border: 0;
    background: transparent;
    color: var(--muted);
    cursor: pointer;
    font-size: 0.57rem;
    text-transform: lowercase;
  }

  .mobile-action:hover,
  .mobile-action:focus-visible { color: var(--ink); }
  .mobile-action-accent { color: var(--acid); }
}

@media (max-width: 520px) {
  .signal-readout { font-size: 0.56rem; }
  .empty-state { width: calc(100% - 2.4rem); }
  .empty-actions { flex-direction: column; width: min(15rem, 100%); margin-right: auto; margin-left: auto; }
  .button { min-height: 2.45rem; }
  .source-row .button-primary,
  .source-row .button-quiet { flex: 1; }
  .source-row .button-square { flex: 0 0 2.45rem; }
  .preset-button { min-height: 2.7rem; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.001ms !important;
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
  }

  .stage-scanlines { opacity: 0.08; }
}