:root {
  color-scheme: light;
  --paper: #f6f1e8;
  --paper-2: #fffaf0;
  --ink: #24231f;
  --muted: #716d64;
  --line: #d8d1c3;
  --line-strong: #bfb6a7;
  --teal: #008d8b;
  --teal-ink: #006665;
  --teal-soft: #d8eeea;
  --coral: #d85f48;
  --amber: #d69b2d;
  --shadow: 0 18px 44px rgba(55, 48, 38, 0.12);
  --radius: 8px;
  font-family: "Avenir Next", "IBM Plex Sans", "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-width: 1120px;
  min-height: 100vh;
  color: var(--ink);
  background:
    linear-gradient(90deg, rgba(0, 141, 139, 0.06) 1px, transparent 1px),
    linear-gradient(0deg, rgba(36, 35, 31, 0.04) 1px, transparent 1px),
    radial-gradient(circle at 20% 20%, rgba(214, 155, 45, 0.12), transparent 26%),
    var(--paper);
  background-size: 28px 28px, 28px 28px, auto, auto;
}

button,
input {
  font: inherit;
}

button {
  cursor: pointer;
}

.shell {
  display: grid;
  grid-template-rows: 72px minmax(0, 1fr);
  min-height: 100vh;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 14px 20px 14px 24px;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 250, 240, 0.86);
  backdrop-filter: blur(16px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
  min-width: 260px;
}

.brand-mark {
  width: 34px;
  height: 34px;
  border: 2px solid var(--teal);
  border-radius: 50%;
  position: relative;
}

.brand-mark::before,
.brand-mark::after {
  content: "";
  position: absolute;
  background: var(--teal);
}

.brand-mark::before {
  left: -8px;
  right: -8px;
  top: 50%;
  height: 2px;
}

.brand-mark::after {
  top: -8px;
  bottom: -8px;
  left: 50%;
  width: 2px;
}

h1 {
  margin: 0;
  font-size: 23px;
  line-height: 1;
  letter-spacing: 0;
}

.brand p {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 12px;
}

.top-actions,
.button-row,
.transport,
.stage-toolbar {
  display: flex;
  align-items: center;
  gap: 10px;
}

.workspace {
  display: grid;
  grid-template-columns: 330px minmax(560px, 1fr) 320px;
  min-height: 0;
}

.side-panel {
  display: flex;
  flex-direction: column;
  min-height: 0;
  border-right: 1px solid var(--line);
  background: rgba(255, 250, 240, 0.78);
}

.right-panel {
  border-right: 0;
  border-left: 1px solid var(--line);
}

.panel-section {
  padding: 18px;
  border-bottom: 1px solid var(--line);
}

.panel-section.grow {
  flex: 1;
  min-height: 0;
  overflow: hidden;
}

.section-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
}

.section-actions {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.button,
.text-button,
.square-button,
.segment {
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  color: var(--ink);
  background: rgba(255, 255, 255, 0.62);
  min-height: 38px;
  padding: 0 14px;
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.8) inset;
}

.button.primary {
  color: white;
  border-color: var(--teal-ink);
  background: linear-gradient(180deg, var(--teal), var(--teal-ink));
}

.button:disabled {
  cursor: wait;
  opacity: 0.55;
}

.text-button {
  min-height: 28px;
  padding: 0 9px;
  color: var(--teal-ink);
}

.square-button {
  width: 40px;
  padding: 0;
  font-size: 23px;
}

.segmented {
  display: inline-flex;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  overflow: hidden;
  background: rgba(255, 255, 255, 0.7);
}

.segment {
  border: 0;
  border-radius: 0;
}

.segment.active {
  color: white;
  background: var(--teal);
}

.button-row.compact {
  align-items: stretch;
}

.agent-bridge {
  display: grid;
  gap: 10px;
}

.agent-bridge label {
  display: grid;
  gap: 6px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
}

.advanced-agent-controls {
  border: 1px dashed var(--line-strong);
  border-radius: var(--radius);
  padding: 9px;
  background: rgba(255, 255, 255, 0.36);
}

.advanced-agent-controls summary {
  cursor: pointer;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
}

.advanced-agent-controls label {
  margin-top: 10px;
}

.agent-bridge input,
.agent-bridge textarea {
  width: 100%;
  min-height: 36px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  padding: 8px 10px;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.7);
  resize: vertical;
}

.nudge-pad {
  display: grid;
  grid-template-columns: repeat(3, 40px);
  grid-template-areas:
    ". up ."
    "left down right";
  justify-content: center;
  gap: 8px;
  margin: 12px 0;
}

#nudgeUpBtn { grid-area: up; }
#nudgeLeftBtn { grid-area: left; }
#nudgeDownBtn { grid-area: down; }
#nudgeRightBtn { grid-area: right; }

.hint-text {
  margin: 0 0 12px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.4;
}

.status-text {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.35;
}

.status-text[data-tone="ok"] {
  color: var(--teal-ink);
}

.status-text[data-tone="busy"] {
  color: var(--amber);
}

.status-text[data-tone="error"] {
  color: var(--coral);
}

.sheet-stats,
.readout {
  margin: 0;
  display: grid;
  gap: 8px;
}

.sheet-stats div,
.readout div {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  font-size: 13px;
}

dt {
  color: var(--muted);
}

dd {
  margin: 0;
  font-variant-numeric: tabular-nums;
}

.layout-grid,
.inspector-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 14px;
}

label {
  display: grid;
  gap: 6px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
}

input[type="number"],
input[type="text"] {
  width: 100%;
  height: 38px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  padding: 0 10px;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.72);
  font-variant-numeric: tabular-nums;
}

input[type="range"] {
  accent-color: var(--teal);
}

.row-list {
  display: grid;
  gap: 8px;
  max-height: calc(100vh - 292px);
  overflow: auto;
  padding-right: 4px;
}

.row-item {
  display: grid;
  grid-template-columns: 1fr 68px;
  gap: 8px;
  align-items: center;
  padding: 9px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.58);
  cursor: pointer;
}

.row-item:hover {
  border-color: var(--teal);
  background: rgba(216, 238, 234, 0.42);
}

.row-item.active {
  border-color: var(--teal);
  box-shadow: inset 3px 0 0 var(--teal), var(--shadow);
}

.row-item button {
  min-width: 0;
  border: 0;
  padding: 0;
  text-align: left;
  color: var(--ink);
  background: transparent;
  cursor: pointer;
}

.row-item small {
  display: block;
  margin-top: 4px;
  color: var(--muted);
  font-size: 11px;
}

.stage-column {
  display: grid;
  grid-template-rows: 58px minmax(0, 1fr) 172px;
  min-width: 0;
  min-height: 0;
}

.stage-toolbar {
  justify-content: space-between;
  padding: 10px 16px;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 250, 240, 0.62);
}

.inline-control {
  grid-auto-flow: column;
  align-items: center;
  gap: 8px;
}

.inline-control input[type="number"] {
  width: 68px;
}

.inline-control input[type="range"] {
  width: 140px;
}

.toggle {
  grid-auto-flow: column;
  align-items: center;
  gap: 8px;
}

.toggle input {
  accent-color: var(--teal);
}

.stage-wrap {
  min-height: 0;
  padding: 18px;
  background: rgba(246, 241, 232, 0.44);
}

#stageCanvas {
  width: 100%;
  height: 100%;
  min-height: 420px;
  display: block;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: var(--paper-2);
  box-shadow: var(--shadow);
}

.timeline-bar {
  display: grid;
  grid-template-columns: 94px minmax(0, 1fr);
  gap: 12px;
  padding: 14px 18px;
  border-top: 1px solid var(--line);
  background: rgba(255, 250, 240, 0.8);
}

.transport {
  align-content: start;
  align-items: start;
}

.timeline {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: 86px;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 4px;
}

.frame-tile {
  display: grid;
  gap: 6px;
  justify-items: center;
  padding: 8px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.62);
}

.frame-tile.active {
  border-color: var(--teal);
  box-shadow: inset 0 -3px 0 var(--teal);
}

.frame-tile canvas {
  width: 64px;
  height: 64px;
  image-rendering: pixelated;
}

.frame-tile span {
  color: var(--muted);
  font-size: 12px;
  font-variant-numeric: tabular-nums;
}

#previewCanvas {
  width: 100%;
  height: 206px;
  display: block;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(45deg, rgba(0, 141, 139, 0.08), transparent), var(--paper-2);
  image-rendering: pixelated;
}

.button-row {
  margin-top: 12px;
  align-items: stretch;
}

.button-row .button {
  flex: 1;
}

@media (max-width: 1280px) {
  body {
    min-width: 980px;
  }

  .workspace {
    grid-template-columns: 270px minmax(500px, 1fr) 280px;
  }

  .stage-column {
    grid-template-rows: 58px minmax(0, 1fr) 156px;
  }
}

@media (max-width: 760px) {
  body {
    min-width: 0;
  }

  .shell {
    grid-template-rows: auto minmax(0, 1fr);
  }

  .topbar {
    flex-wrap: wrap;
    padding: 12px;
  }

  .brand {
    min-width: 0;
  }

  .top-actions {
    width: 100%;
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
  }

  .top-actions .button {
    min-width: 0;
    padding: 0 8px;
  }

  .workspace {
    grid-template-columns: 1fr;
  }

  .side-panel,
  .right-panel {
    border-left: 0;
    border-right: 0;
  }

  .stage-column {
    grid-row: 1;
    grid-template-rows: auto 520px 150px;
  }

  .left-panel {
    grid-row: 2;
  }

  .right-panel {
    grid-row: 3;
  }

  .stage-toolbar {
    flex-wrap: wrap;
    justify-content: flex-start;
  }

  .stage-wrap {
    padding: 12px;
  }

  #stageCanvas {
    min-height: 470px;
  }

  .row-list {
    max-height: 260px;
  }

  .timeline-bar {
    grid-template-columns: 76px minmax(0, 1fr);
    padding: 10px 12px;
  }
}