:root {
  --paper: #eef1ec;
  --panel: #fbfaf5;
  --ink: #171a16;
  --muted: #687164;
  --line: #cbd2c4;
  --accent: #b9543c;
  --green: #4d765f;
  --blue: #3f607c;
  --pressed: #8c9288;
  --pressed-border: #aeb4aa;
  --pressed-ring: rgba(238, 241, 236, 0.2);
  --shadow: 0 18px 60px rgba(23, 26, 22, 0.12);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  overflow-x: hidden;
  min-height: 100vh;
  background:
    linear-gradient(90deg, rgba(23, 26, 22, 0.035) 1px, transparent 1px),
    linear-gradient(180deg, rgba(23, 26, 22, 0.035) 1px, transparent 1px),
    var(--paper);
  background-size: 28px 28px;
  color: var(--ink);
  font-family: ui-sans-serif, "Avenir Next", "Helvetica Neue", sans-serif;
}

button, input, textarea, select { font: inherit; }
button:disabled { cursor: wait; opacity: 0.64; transform: none; }

.shell {
  display: grid;
  grid-template-columns: minmax(260px, 320px) minmax(0, 1fr);
  gap: 18px;
  width: 100%;
  max-width: 100vw;
  min-height: 100vh;
  padding: 18px;
}

.panel {
  background: color-mix(in oklch, var(--panel), white 20%);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
  padding: 18px;
}

.brand {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 22px;
}

.brand span {
  color: var(--panel);
  background: var(--ink);
  border-radius: 4px;
  padding: 3px 7px;
  font-size: 12px;
  letter-spacing: 0;
}

.brand strong { font-size: 18px; font-weight: 650; }

label {
  display: grid;
  gap: 7px;
  margin: 12px 0;
  color: var(--muted);
  font-size: 12px;
}

.label-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.help-tooltip {
  position: relative;
  display: inline-grid;
  place-items: center;
  width: 18px;
  height: 18px;
  border: 1px solid var(--line);
  border-radius: 50%;
  color: var(--muted);
  background: #fffdf7;
  cursor: help;
  font-size: 11px;
  line-height: 1;
}

.help-tooltip::after {
  content: attr(aria-label);
  position: absolute;
  right: 0;
  bottom: calc(100% + 8px);
  z-index: 20;
  width: 280px;
  max-width: min(280px, calc(100vw - 48px));
  padding: 9px 10px;
  border-radius: 6px;
  background: var(--ink);
  box-shadow: 0 12px 36px rgba(23, 26, 22, 0.24);
  color: var(--panel);
  font-size: 11px;
  font-weight: 400;
  line-height: 1.4;
  opacity: 0;
  pointer-events: none;
  transform: translateY(4px);
  transition: opacity 120ms ease, transform 120ms ease;
}

.help-tooltip:hover::after,
.help-tooltip:focus-visible::after {
  opacity: 1;
  transform: translateY(0);
}

input, textarea, select {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fffdf7;
  color: var(--ink);
  padding: 10px 11px;
  outline: none;
}

textarea { resize: vertical; line-height: 1.45; }
input:focus, textarea:focus, select:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(185, 84, 60, 0.12); }

.split { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.output-options {
  align-items: end;
}
.output-options .toggle-row {
  min-height: 40px;
  margin: 12px 0;
}
.actions { display: grid; grid-template-columns: 1fr 0.7fr; gap: 10px; margin-top: 16px; }
.toggle-row {
  display: flex;
  align-items: center;
  gap: 9px;
  margin-top: 14px;
}
.toggle-row input {
  width: 16px;
  height: 16px;
  accent-color: var(--ink);
}

button {
  border: 1px solid var(--line);
  border-radius: 6px;
  color: var(--ink);
  background: #fffdf7;
  min-height: 38px;
  padding: 0 12px;
  cursor: pointer;
  transition:
    background-color 120ms ease,
    border-color 120ms ease,
    box-shadow 120ms ease,
    color 120ms ease,
    transform 120ms ease;
}

button:hover:not(:disabled) {
  border-color: var(--ink);
  background: color-mix(in oklch, #fffdf7, var(--green) 10%);
  box-shadow: 0 8px 18px rgba(23, 26, 22, 0.08);
  transform: translateY(-1px);
}
button:active:not(:disabled),
button.is-pressed:not(:disabled) {
  border-color: var(--pressed-border);
  background: var(--pressed);
  color: #fffdf7;
  box-shadow:
    inset 0 0 0 1px rgba(255, 253, 247, 0.18),
    inset 0 2px 7px rgba(23, 26, 22, 0.16);
  transform: translateY(0);
}
button.is-key-active:not(:disabled) {
  border-color: var(--pressed-border);
  background: var(--pressed);
  color: #fffdf7;
  box-shadow:
    inset 0 0 0 1px rgba(255, 253, 247, 0.22),
    0 0 0 3px var(--pressed-ring),
    0 10px 22px rgba(23, 26, 22, 0.18);
  transform: none;
}
button:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px rgba(185, 84, 60, 0.18);
}
.primary { background: var(--ink); color: var(--panel); border-color: var(--ink); }
.primary:hover:not(:disabled) {
  background: color-mix(in oklch, var(--ink), var(--green) 18%);
  color: var(--panel);
}
.primary:active:not(:disabled),
.primary.is-pressed:not(:disabled) {
  background: var(--pressed);
  border-color: var(--pressed-border);
  color: var(--panel);
}
.wide { width: 100%; margin-top: 10px; }

.workspace {
  display: grid;
  gap: 18px;
  min-width: 0;
  max-width: 100%;
}

.stage {
  position: relative;
  display: grid;
  grid-template-rows: auto auto auto auto auto;
  align-self: start;
  justify-self: center;
  min-width: 0;
  width: 100%;
  max-width: min(1500px, 100%);
  overflow: hidden;
  border: 1px solid #11140f;
  border-radius: 8px;
  background: #11140f;
  box-shadow: var(--shadow);
}

.preview-frame {
  position: relative;
  display: grid;
  place-items: center;
  justify-self: center;
  width: min(calc(1040px * var(--preview-scale, 1.2)), 100%);
  overflow: hidden;
  background: #11140f;
  contain: paint;
  isolation: isolate;
}

.preview-frame::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background: linear-gradient(
    180deg,
    rgba(238, 241, 236, 0.045),
    transparent 34%,
    rgba(0, 0, 0, 0.18)
  );
}

.preview-frame::after {
  content: none;
}

.stage[data-preview-state="waiting"] .preview-frame::after {
  animation: none;
}

.topbar, .timeline {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
  height: 44px;
  padding: 0 14px;
  color: #e8eadf;
  background: rgba(17, 20, 15, 0.88);
  font-size: 12px;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.topbar > * {
  flex: 0 0 auto;
  align-self: center;
}

.topbar-spacer { flex: 1; }
.record-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  flex: 0 0 118px;
  width: 118px;
  min-height: 28px;
  height: 28px;
  padding: 0 9px;
  border-color: rgba(232, 234, 223, 0.22);
  background: rgba(238, 241, 236, 0.08);
  color: #e8eadf;
  font-size: 11px;
  font-variant-numeric: tabular-nums;
}
.record-button:hover:not(:disabled) {
  border-color: rgba(232, 234, 223, 0.44);
  background: rgba(238, 241, 236, 0.14);
  box-shadow: none;
  transform: none;
}
.record-button:active:not(:disabled),
.record-button.is-pressed:not(:disabled),
.record-button:focus-visible {
  transform: none;
}
.record-button.is-recording {
  border-color: color-mix(in oklch, var(--accent), white 18%);
  background: var(--accent);
  color: #fffdf7;
}
.record-button.is-saving {
  cursor: wait;
  opacity: 0.76;
}
#recordLabel {
  flex: 0 0 36px;
  text-align: left;
}
.record-button-icon {
  flex: 0 0 9px;
  width: 9px;
  height: 9px;
  min-width: 9px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 3px rgba(185, 84, 60, 0.16);
}
.record-button.is-recording .record-button-icon {
  border-radius: 2px;
  background: #fffdf7;
  box-shadow: none;
}
.record-button-duration {
  display: inline-block;
  flex: 0 0 34px;
  min-width: 34px;
  text-align: right;
  color: rgba(232, 234, 223, 0.7);
}
.record-button.is-recording .record-button-duration {
  color: rgba(255, 253, 247, 0.86);
}
.preview-scale-control {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex: 0 0 170px;
  min-width: 170px;
  margin: 0;
  color: rgba(232, 234, 223, 0.72);
  font-size: 11px;
  line-height: 1;
}
.preview-scale-control input {
  width: 92px;
  min-width: 72px;
  padding: 0;
  border: 0;
  background: transparent;
  accent-color: #eef1ec;
}
.preview-scale-control b {
  min-width: 36px;
  color: #fffdf7;
  font-weight: 650;
}
#statusText {
  display: inline-block;
  min-width: 92px;
  line-height: 1;
}
#chunkText {
  display: inline-block;
  min-width: 70px;
  line-height: 1;
}
.stage-stat {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  flex: 0 1 auto;
  min-width: 0;
  color: rgba(232, 234, 223, 0.72);
  line-height: 1;
}
.stage-stat b {
  display: inline-block;
  color: #fffdf7;
  font-weight: 650;
  font-variant-numeric: tabular-nums;
}

#outputSizeText { min-width: 206px; }
#renderFps { min-width: 2ch; text-align: right; }
#theoreticalFpsText { min-width: 116px; }
#stageLatencyText { min-width: 120px; }

@media (max-width: 1180px) {
  .topbar {
    flex-wrap: wrap;
    height: auto;
    min-height: 44px;
    padding: 8px 14px;
    row-gap: 7px;
  }
  .topbar-spacer { display: none; }
  .preview-scale-control { flex-basis: 170px; min-width: 170px; }
  #outputSizeText { min-width: 156px; }
  #theoreticalFpsText { min-width: 100px; }
  #stageLatencyText { min-width: 108px; }
}

.timeline { justify-content: flex-end; border-top: 1px solid rgba(232, 234, 223, 0.12); }
.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--muted); }
.dot.live { background: #8ecf9d; box-shadow: 0 0 0 4px rgba(142, 207, 157, 0.14); }
.dot.error { background: var(--accent); }

#viewport {
  position: relative;
  z-index: 1;
  display: block;
  width: 100%;
  height: auto;
  max-height: min(calc(56vh * var(--preview-scale, 1.2)), 82vh);
  min-height: 0;
  object-fit: contain;
  image-rendering: auto;
  transform: translateZ(0);
}

.preview-overlay {
  position: absolute;
  inset: 0;
  z-index: 3;
  display: none;
  place-items: center;
  pointer-events: none;
  background: transparent;
}

.stage[data-preview-state="waiting"] .preview-overlay {
  display: grid;
}

.preview-loader {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 2px solid rgba(238, 241, 236, 0.22);
  border-top-color: rgba(238, 241, 236, 0.82);
  animation: previewProgressSpin 0.8s linear infinite;
}

.stage-controls {
  display: grid;
  grid-template-columns: repeat(2, minmax(180px, 1fr));
  gap: 12px;
  padding: 12px 14px 13px;
  border-top: 1px solid rgba(232, 234, 223, 0.12);
  background: #151912;
}

.control-cluster {
  display: grid;
  grid-template-columns: 46px 1fr;
  gap: 10px;
  align-items: center;
}

.control-title {
  color: rgba(232, 234, 223, 0.62);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.stage-controls .camera-pad {
  margin: 0;
}

.stage-controls .camera-pad button {
  position: relative;
  border-color: rgba(232, 234, 223, 0.18);
  background: #eef1ec;
  color: #11140f;
}

.stage-controls .camera-pad button:active:not(:disabled),
.stage-controls .camera-pad button.is-pressed:not(:disabled),
.stage-controls .camera-pad button.is-key-active:not(:disabled) {
  border-color: var(--pressed-border);
  background: var(--pressed);
  color: #fffdf7;
  box-shadow:
    inset 0 0 0 1px rgba(255, 253, 247, 0.22),
    0 0 0 3px var(--pressed-ring),
    0 10px 22px rgba(23, 26, 22, 0.18);
}

.stage-controls .camera-pad button::after {
  content: attr(data-key);
  position: absolute;
  right: 7px;
  top: 5px;
  color: color-mix(in oklch, var(--muted), var(--ink) 18%);
  font-size: 10px;
  font-weight: 650;
}

.stage-controls .camera-pad button:active::after,
.stage-controls .camera-pad button.is-pressed::after,
.stage-controls .camera-pad button.is-key-active::after {
  color: rgba(255, 253, 247, 0.78);
}

.section-title {
  margin: 16px 0 10px;
  color: var(--muted);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.reference-upload {
  margin-top: 0;
}

.reference-upload input {
  border: 1px dashed var(--line);
}

#referencePreview {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  min-height: 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #e5e7df;
}

#referenceName {
  min-height: 18px;
  color: var(--muted);
  font-size: 11px;
}

.spec-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(120px, 1fr));
  gap: 8px;
  margin-bottom: 12px;
}

.spec-grid span {
  display: grid;
  gap: 2px;
  min-height: 46px;
  align-content: center;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fffdf7;
  padding: 9px;
  color: var(--muted);
  font-size: 11px;
}

.spec-grid b {
  color: var(--ink);
  font-size: 14px;
}

.presets {
  position: static;
  max-height: none;
  overflow: visible;
  scrollbar-gutter: stable;
}

.preset-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 7px;
  min-height: 0;
  max-height: 230px;
  margin-bottom: 12px;
  overflow: auto;
  padding-right: 3px;
}
.preset {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  gap: 4px 9px;
  align-items: center;
  padding: 8px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fffdf7;
  text-align: left;
}
.preset-thumb {
  display: block;
  grid-row: span 2;
  width: 72px;
  height: 46px;
  min-height: 0;
  object-fit: cover;
  border-radius: 5px;
  border: 1px solid color-mix(in oklch, var(--line), var(--ink) 8%);
}
.preset b { min-width: 0; font-size: 13px; }
.preset span { min-width: 0; color: var(--muted); font-size: 11px; line-height: 1.25; }
.preset[data-tone="green"] { border-left: 4px solid var(--green); }
.preset[data-tone="blue"] { border-left: 4px solid var(--blue); }
.preset[data-tone="accent"] { border-left: 4px solid var(--accent); }
.preset:hover:not(:disabled) {
  background: color-mix(in oklch, #fffdf7, var(--blue) 9%);
}

.camera-pad {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
  margin-bottom: 8px;
}

.camera-pad span { min-height: 36px; }
.camera-pad button { min-height: 36px; font-size: 12px; }
.telemetry { display: grid; gap: 7px; margin-top: 10px; }
.telemetry span {
  display: flex;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
  padding-bottom: 8px;
  color: var(--muted);
  font-size: 12px;
}
.telemetry b { color: var(--ink); font-weight: 650; }

.stage-telemetry {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0;
  margin-top: 0;
  border-top: 1px solid rgba(232, 234, 223, 0.12);
  background: #11140f;
}

.stage-telemetry span {
  min-height: 36px;
  align-items: center;
  gap: 8px;
  border-right: 1px solid rgba(232, 234, 223, 0.1);
  border-bottom: 1px solid rgba(232, 234, 223, 0.1);
  padding: 0 14px;
  color: rgba(232, 234, 223, 0.62);
  font-size: 11px;
}

.stage-telemetry b {
  color: #fffdf7;
  font-size: 12px;
}

.history-list {
  display: grid;
  gap: 7px;
  max-height: 92px;
  overflow: auto;
}

.history-list span {
  display: block;
  border-left: 3px solid var(--blue);
  background: #fffdf7;
  padding: 8px 9px;
  color: var(--muted);
  font-size: 12px;
}

@media (max-width: 980px) {
  .shell { grid-template-columns: 1fr; }
  .presets { position: static; max-height: none; overflow: visible; }
  .spec-grid { grid-template-columns: repeat(2, 1fr); }
  .preset-list { min-height: 260px; max-height: 420px; }
  #viewport { max-height: 420px; }
  .stage-controls { grid-template-columns: 1fr; }
  .stage-telemetry { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .topbar { flex-wrap: wrap; height: auto; min-height: 44px; padding: 10px 14px; }
  .topbar-spacer { display: none; }
  .preview-scale-control { min-width: 160px; }
}

@keyframes previewProgressSpin {
  to { transform: rotate(360deg); }
}