:root {
  --canvas-luminous-cream: #fff9f5;
  --eggshell: #eae1df;
  --pure-white: #ffffff;
  --deep-black: #1f0812;
  --stone: #545e56;
  --slate: #37515f;
  --terracotta: #b98b82;
  --rose: #e4959e;
  --sage: #667761;
  --taupe: #917c78;

  --space-1: 8px;
  --space-2: 12px;
  --space-3: 16px;
  --space-4: 24px;
  --space-5: 32px;
  --space-6: 48px;

  --track-meta-width: 216px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  background: var(--canvas-luminous-cream);
  color: var(--deep-black);
  font-family: "Helvetica Neue", "SF Pro Text", "SF Pro Display", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

body {
  min-height: 100vh;
}

button,
input,
select {
  font-family: inherit;
  font-size: 14px;
  color: var(--deep-black);
}

.app-shell {
  width: min(1560px, 100% - var(--space-5));
  margin: 0 auto;
  padding: var(--space-4) 0 var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.panel {
  border: 1px solid var(--stone);
  background: var(--canvas-luminous-cream);
  padding: var(--space-3);
}

.app-header h1 {
  margin: 0;
  font-family: "Times New Roman", Times, serif;
  font-style: italic;
  font-size: clamp(34px, 4vw, 48px);
  font-weight: 500;
  line-height: 1.05;
  letter-spacing: 0.02em;
}

.app-header p {
  margin: var(--space-2) 0 0;
  max-width: 80ch;
  color: var(--stone);
  line-height: 1.45;
}

.transport-panel {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.transport-row {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-wrap: wrap;
}

button {
  border: 1px solid var(--stone);
  background: var(--eggshell);
  padding: 0 14px;
  min-height: 36px;
  cursor: pointer;
}

button:hover {
  background: #f6ece8;
}

button:active {
  background: var(--terracotta);
  color: var(--deep-black);
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

.field {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  min-width: 0;
}

.field span {
  color: var(--stone);
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-weight: 600;
}

.field-compact {
  width: 124px;
}

.field-inline {
  flex-direction: row;
  align-items: center;
  gap: var(--space-1);
}

input,
select {
  border: 1px solid var(--stone);
  border-radius: 0;
  background: var(--pure-white);
  min-height: 36px;
  padding: 0 var(--space-1);
}

input:focus,
select:focus {
  outline: none;
  border-color: var(--terracotta);
  box-shadow: none;
}

.checkbox-field {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  border: 1px solid var(--stone);
  min-height: 36px;
  padding: 0 var(--space-1);
  color: var(--deep-black);
  background: var(--eggshell);
}

.checkbox-field input {
  min-height: auto;
  accent-color: var(--terracotta);
}

.time-readout {
  margin-left: auto;
  min-height: 36px;
  border: 1px solid var(--stone);
  background: var(--pure-white);
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 0 12px;
  font-family: "Menlo", "SFMono-Regular", "Consolas", monospace;
  font-size: 13px;
  color: var(--deep-black);
}

.time-divider {
  color: var(--stone);
}

#scrubber {
  flex: 1;
  min-width: 220px;
  accent-color: var(--terracotta);
}

.workspace-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(280px, 0.95fr);
  gap: var(--space-4);
  align-items: start;
}

.panel-title-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-3);
  flex-wrap: wrap;
}

h2 {
  margin: 0;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  color: var(--deep-black);
  font-weight: 700;
}

.resolution-controls {
  display: flex;
  align-items: flex-end;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.preview-stage {
  margin-top: var(--space-3);
  border: 1px solid var(--stone);
  background-color: var(--pure-white);
  background-image:
    linear-gradient(45deg, var(--eggshell) 25%, transparent 25%),
    linear-gradient(-45deg, var(--eggshell) 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, var(--eggshell) 75%),
    linear-gradient(-45deg, transparent 75%, var(--eggshell) 75%);
  background-size: 24px 24px;
  background-position: 0 0, 0 12px, 12px -12px, -12px 0;
}

#previewCanvas {
  display: block;
  width: 100%;
  height: auto;
  max-height: 68vh;
}

.panel-note {
  margin: var(--space-2) 0 0;
  color: var(--stone);
  line-height: 1.4;
  font-size: 13px;
}

.inspector-panel {
  min-height: 240px;
}

.inspector-form {
  margin-top: var(--space-3);
  display: grid;
  gap: var(--space-2);
}

.inspector-form input,
.inspector-form select {
  width: 100%;
}

.danger-button {
  margin-top: var(--space-2);
  border-color: var(--rose);
  background: #f4e5e7;
}

.timeline-panel {
  padding-bottom: var(--space-2);
}

.timeline-scroll {
  margin-top: var(--space-3);
  border: 1px solid var(--stone);
  background: var(--pure-white);
  overflow: auto;
  max-height: 55vh;
}

.timeline-content {
  position: relative;
  min-width: 100%;
}

.ruler-row,
.track-row {
  display: grid;
  grid-template-columns: var(--track-meta-width) 1fr;
}

.ruler-row {
  border-bottom: 1px solid var(--stone);
  background: var(--canvas-luminous-cream);
}

.track-row {
  border-bottom: 1px solid var(--eggshell);
}

.track-meta {
  border-right: 1px solid var(--stone);
  padding: var(--space-2);
  background: var(--canvas-luminous-cream);
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: var(--space-1);
}

.track-title {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.track-subtitle {
  color: var(--stone);
  font-size: 12px;
}

.add-clip-button {
  width: fit-content;
  min-height: 30px;
  padding-inline: 10px;
  font-size: 12px;
}

.ruler-meta {
  justify-content: center;
  align-items: flex-start;
}

.timeline-ruler {
  position: relative;
  min-height: 42px;
  background: var(--pure-white);
}

.ruler-mark {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 1px;
  background: var(--eggshell);
}

.ruler-mark.major {
  background: var(--stone);
}

.ruler-label {
  position: absolute;
  top: 4px;
  left: 4px;
  font-size: 11px;
  color: var(--stone);
  font-family: "Menlo", "SFMono-Regular", "Consolas", monospace;
}

.track-lane {
  position: relative;
  min-height: 80px;
  background: linear-gradient(to bottom, #fffefc 0%, #fff9f5 100%);
}

.track-lane::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(
    to right,
    transparent 0,
    transparent calc(var(--lane-grid-width, 88px) - 1px),
    rgba(84, 94, 86, 0.08) calc(var(--lane-grid-width, 88px) - 1px),
    rgba(84, 94, 86, 0.08) var(--lane-grid-width, 88px)
  );
}

.clip-block {
  position: absolute;
  top: 16px;
  height: 48px;
  border: 1px solid var(--stone);
  background: #ecd7d2;
  color: var(--deep-black);
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 0 10px;
  overflow: hidden;
  user-select: none;
  cursor: grab;
  z-index: 2;
}

.clip-block:hover {
  border-color: var(--deep-black);
}

.clip-block.selected {
  background: #f1d7dc;
  border-color: var(--deep-black);
}

.clip-block.dragging {
  cursor: grabbing;
  background: #f0c8be;
}

.clip-name {
  font-size: 12px;
  font-weight: 600;
  white-space: nowrap;
  text-overflow: ellipsis;
  overflow: hidden;
}

.clip-time {
  font-size: 11px;
  color: var(--stone);
  margin-top: 2px;
  white-space: nowrap;
}

.timeline-playhead {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--terracotta);
  pointer-events: none;
  z-index: 4;
}

.status-row {
  border: 1px solid var(--stone);
  background: var(--canvas-luminous-cream);
  min-height: 42px;
  padding: 0 var(--space-2);
  display: flex;
  align-items: center;
  color: var(--stone);
  font-size: 13px;
}

.status-row.error {
  color: #7d2a31;
}

@media (max-width: 1100px) {
  .workspace-grid {
    grid-template-columns: 1fr;
  }

  .time-readout {
    margin-left: 0;
  }
}

@media (max-width: 760px) {
  :root {
    --track-meta-width: 168px;
  }

  .app-shell {
    width: calc(100% - var(--space-4));
    padding-top: var(--space-3);
  }

  .transport-row {
    gap: var(--space-1);
  }

  .field-compact {
    width: 104px;
  }

  button,
  input,
  select,
  .checkbox-field {
    min-height: 34px;
  }
}