:root {
  color-scheme: dark;
  --ink: #f4f2eb;
  --muted: rgba(244, 242, 235, 0.58);
  --glass: rgba(8, 10, 24, 0.62);
  --glass-strong: rgba(8, 10, 24, 0.82);
  --line: rgba(255, 255, 255, 0.15);
  --accent: #78f7e7;
  --split: 50%;
}

* { box-sizing: border-box; }

html, body {
  width: 100%;
  height: 100%;
  margin: 0;
  overflow: hidden;
  background: #050611;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

button, input { font: inherit; }
button { color: inherit; }

#app {
  position: relative;
  width: 100%;
  height: 100%;
  min-height: 560px;
  isolation: isolate;
  user-select: none;
  background: radial-gradient(circle at 50% 25%, #17162e, #050611 70%);
}

#gl-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  cursor: ew-resize;
  touch-action: none;
}

#app::before {
  content: "";
  pointer-events: none;
  position: absolute;
  inset: 0;
  z-index: 2;
  box-shadow: inset 0 0 0 1px rgba(255,255,255,0.08), inset 0 0 180px rgba(0,0,0,0.38);
}

.glass {
  background: linear-gradient(145deg, rgba(20, 22, 42, 0.76), var(--glass));
  border: 1px solid var(--line);
  box-shadow: 0 16px 54px rgba(0,0,0,0.28);
  backdrop-filter: blur(16px) saturate(135%);
  -webkit-backdrop-filter: blur(16px) saturate(135%);
}

.brand-panel {
  position: absolute;
  z-index: 5;
  top: 28px;
  left: 28px;
  width: 270px;
  padding: 20px 22px 18px;
}

.eyebrow,
.effect-kicker,
.status-strip,
.comparison-label,
.slider-row > span,
.slider-row output,
.effect-index,
.effect-chip-index {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.eyebrow {
  color: var(--accent);
  font-size: 10px;
  margin-bottom: 18px;
}

h1 {
  margin: 0;
  font-size: clamp(34px, 4.1vw, 64px);
  line-height: 0.82;
  letter-spacing: -0.075em;
  font-weight: 900;
}

h1 span {
  color: transparent;
  -webkit-text-stroke: 1px rgba(244, 242, 235, 0.78);
}

.brand-panel p {
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.5;
  max-width: 220px;
}

.effect-panel {
  position: absolute;
  z-index: 5;
  top: 28px;
  right: 28px;
  width: min(430px, calc(100vw - 380px));
  min-width: 320px;
  display: grid;
  grid-template-columns: 62px 1fr;
  gap: 16px;
  padding: 18px 20px;
}

.effect-index {
  color: var(--accent);
  font-size: 11px;
  border-right: 1px solid var(--line);
  padding-top: 4px;
}

.effect-kicker {
  color: var(--muted);
  font-size: 9px;
  margin-bottom: 5px;
}

.effect-panel h2 {
  margin: 0;
  font-size: clamp(20px, 2.4vw, 36px);
  line-height: 1;
  letter-spacing: -0.045em;
}

.effect-panel p {
  margin: 9px 0 0;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.45;
}

.comparison-label {
  position: absolute;
  z-index: 4;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  gap: 3px;
  color: rgba(255,255,255,0.9);
  font-size: 11px;
  pointer-events: none;
  text-shadow: 0 1px 7px rgba(0,0,0,0.8);
}

.comparison-label small {
  font-size: 8px;
  color: rgba(255,255,255,0.5);
}

.before-label { left: 34px; }
.after-label { right: 34px; text-align: right; }

.split-handle {
  position: absolute;
  left: var(--split);
  top: 0;
  bottom: 0;
  z-index: 4;
  width: 0;
  pointer-events: none;
  transition: opacity 180ms ease;
}

.split-line {
  position: absolute;
  left: -1px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: rgba(255,255,255,0.8);
  box-shadow: 0 0 18px rgba(255,255,255,0.55);
}

.split-knob {
  position: absolute;
  left: -19px;
  top: 50%;
  width: 38px;
  height: 38px;
  margin-top: -19px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: #0b0d16;
  background: #f5f3ed;
  border: 1px solid rgba(0,0,0,0.18);
  box-shadow: 0 8px 24px rgba(0,0,0,0.35);
  font-weight: 800;
}

.controls {
  position: absolute;
  z-index: 5;
  right: 28px;
  bottom: 100px;
  width: 278px;
  padding: 14px;
}

.control-row {
  display: grid;
  grid-template-columns: 40px 40px 1fr 1fr;
  gap: 7px;
  margin-bottom: 12px;
}

button {
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.06);
  border-radius: 2px;
  min-height: 34px;
  cursor: pointer;
  transition: background 150ms ease, border-color 150ms ease, transform 150ms ease;
}

button:hover,
button:focus-visible {
  background: rgba(255,255,255,0.14);
  border-color: rgba(255,255,255,0.35);
  outline: none;
}

button:active { transform: translateY(1px); }

.icon-button { font-size: 17px; }
.text-button {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 9px;
  letter-spacing: 0.09em;
}

.slider-row {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 4px 10px;
  margin-top: 10px;
}

.slider-row > span,
.slider-row output {
  font-size: 8px;
  color: var(--muted);
}

.slider-row output { color: var(--ink); }

.slider-row input {
  grid-column: 1 / -1;
  width: 100%;
  height: 18px;
  margin: 0;
  accent-color: var(--accent);
  cursor: pointer;
}

.effect-rail {
  position: absolute;
  z-index: 5;
  left: 28px;
  right: 326px;
  bottom: 38px;
  height: 54px;
  overflow: hidden;
}

.effect-buttons {
  display: flex;
  height: 100%;
  overflow-x: auto;
  overflow-y: hidden;
  scrollbar-width: none;
  scroll-behavior: smooth;
}
.effect-buttons::-webkit-scrollbar { display: none; }

.effect-chip {
  position: relative;
  flex: 0 0 auto;
  min-width: 118px;
  height: 100%;
  display: grid;
  grid-template-columns: 25px 1fr;
  align-items: center;
  gap: 7px;
  padding: 0 12px;
  border: 0;
  border-right: 1px solid var(--line);
  border-radius: 0;
  background: transparent;
  text-align: left;
}

.effect-chip::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 150ms ease;
}

.effect-chip.active {
  background: rgba(255,255,255,0.1);
}
.effect-chip.active::after { transform: scaleX(1); }

.effect-chip-index {
  color: var(--muted);
  font-size: 8px;
}

.effect-chip-name {
  max-width: 82px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.025em;
}

.status-strip {
  position: absolute;
  z-index: 5;
  left: 28px;
  right: 28px;
  bottom: 13px;
  display: flex;
  gap: 18px;
  color: rgba(255,255,255,0.45);
  font-size: 7px;
  pointer-events: none;
}
.status-strip .key-help { margin-left: auto; }

.fatal-error {
  position: absolute;
  inset: 0;
  z-index: 20;
  display: grid;
  place-content: center;
  text-align: center;
  background: #080916;
}

.fatal-error[hidden] { display: none; }
.fatal-error h2 { margin: 0 0 8px; }
.fatal-error p { margin: 0; color: var(--muted); }

body.clean-ui .brand-panel,
body.clean-ui .effect-panel,
body.clean-ui .comparison-label,
body.clean-ui .split-handle,
body.clean-ui .controls,
body.clean-ui .effect-rail,
body.clean-ui .status-strip {
  display: none !important;
}

body.capture-mode .brand-panel,
body.capture-mode .effect-panel,
body.capture-mode .controls,
body.capture-mode .effect-rail,
body.capture-mode .status-strip {
  transition: none !important;
}

body.view-before .split-handle,
body.view-after .split-handle { opacity: 0; }
body.view-before .after-label,
body.view-after .before-label { display: none; }

@media (max-width: 900px) {
  .brand-panel { width: 220px; }
  .effect-panel { width: 340px; min-width: 0; }
  .controls { width: 250px; }
  .effect-rail { right: 292px; }
  .status-strip .key-help { display: none; }
}

@media (max-width: 700px) {
  #app { min-height: 480px; }
  .brand-panel {
    top: 14px;
    left: 14px;
    width: 174px;
    padding: 14px;
  }
  .brand-panel p { display: none; }
  .eyebrow { margin-bottom: 10px; font-size: 7px; }
  .effect-panel {
    top: 14px;
    right: 14px;
    width: calc(100vw - 216px);
    padding: 12px;
    grid-template-columns: 42px 1fr;
    gap: 10px;
  }
  .effect-panel p { display: none; }
  .effect-panel h2 { font-size: 18px; }
  .controls {
    right: 14px;
    bottom: 82px;
    width: 218px;
    padding: 10px;
  }
  .control-row { grid-template-columns: 34px 34px 1fr 1fr; }
  .slider-row { display: none; }
  .effect-rail {
    left: 14px;
    right: 14px;
    bottom: 27px;
    height: 48px;
  }
  .status-strip { left: 14px; right: 14px; bottom: 9px; }
  .comparison-label { top: 55%; }
}

/* Keep every control available on narrow screens; disclose detail on demand. */
#app{min-height:0;height:100dvh}.glass{border-radius:18px}.brand-panel{background:linear-gradient(145deg,#111522ad,#080a1866)}.controls{bottom:105px;border-radius:20px}.control-row{margin-bottom:0}.settings-disclosure summary{cursor:pointer;color:var(--muted);font:11px ui-monospace,monospace;padding:14px 2px 2px;list-style:none}.settings-disclosure summary::after{content:' +';float:right;color:var(--accent)}.settings-disclosure[open] summary::after{content:' −'}.settings-disclosure summary::-webkit-details-marker{display:none}.settings-disclosure[open]{max-height:48dvh;overflow-y:auto}.effect-rail{right:28px;border-radius:14px}.effect-chip{min-width:118px}:is(button,input,summary):focus-visible{outline:2px solid var(--accent);outline-offset:3px}.slider-row input{min-height:30px}.settings-disclosure .slider-row{display:grid}button{min-height:40px;border-radius:8px}.brand-panel p{max-width:220px}.effect-panel p{color:#c8cad5}
@media(max-width:700px){.brand-panel{top:16px;left:16px;width:auto;padding:14px}.brand-panel h1{font-size:31px}.effect-panel{top:134px;left:16px;right:auto;width:calc(100% - 32px);grid-template-columns:48px 1fr;padding:12px 16px}.effect-panel h2{font-size:21px}.effect-panel .effect-kicker{font-size:8px}.controls{bottom:92px;right:16px;width:calc(100% - 32px);max-width:300px}.effect-rail{left:16px;right:16px;bottom:30px}.comparison-label{top:48%}.status-strip{gap:12px}.settings-disclosure[open]{max-height:36dvh}}
@media(max-height:550px){.brand-panel{padding:12px}.brand-panel h1{font-size:28px}.brand-panel .eyebrow,.brand-panel p,.effect-panel p{display:none}.effect-panel{top:14px;left:auto;right:14px;width:240px}.controls{bottom:94px}.settings-disclosure[open]{max-height:40dvh}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{transition:none!important;scroll-behavior:auto!important}}