src/style.css

:root {
  color-scheme: light;
  font-family:
    ui-sans-serif,
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;
  line-height: 1.5;
  font-weight: 400;
  --paper: #f4f4f2;
  --ink: #171717;
  --muted: #666666;
  --panel: rgba(250, 250, 248, 0.96);
  --panel-strong: #ffffff;
  --border: rgba(23, 23, 23, 0.14);
  --accent: #2a2a2a;
  --accent-strong: #111111;
  --error: #8a1f1f;
  background:
    radial-gradient(circle at top, rgba(0, 0, 0, 0.04), transparent 42%),
    linear-gradient(180deg, #fbfbfa 0%, #f0f0ed 100%);
  color: var(--ink);
}

* {
  box-sizing: border-box;
}

html,
body,
#app {
  min-height: 100%;
}

body {
  margin: 0;
}

button,
input,
select,
textarea {
  font: inherit;
}

button {
  border: 0;
  background: none;
  color: inherit;
}

img,
video {
  display: block;
  max-width: 100%;
}

.shell {
  display: grid;
  min-height: 100vh;
  grid-template-columns: 360px minmax(0, 1fr);
  gap: 14px;
  padding: 14px;
  align-items: start;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 28px;
  box-shadow: 0 18px 48px rgba(0, 0, 0, 0.06);
}

.sidebar {
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-height: calc(100vh - 28px);
  padding: 10px 4px 10px 6px;
}

.hero {
  display: grid;
  gap: 4px;
  padding: 4px 6px 2px;
}

.hero h1 {
  margin: 0;
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero-compact {
  min-height: auto;
}

.hero-copy {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.35;
}

.dropzone-copy,
.empty-note,
.status-text,
.editor-empty span,
.meta-note {
  margin: 0;
  color: var(--muted);
}

.status-grid {
  display: grid;
  gap: 8px 14px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  padding: 8px 6px 10px;
  border-block: 1px solid var(--border);
}

.status-wide {
  grid-column: 1 / -1;
}

.label {
  margin: 0;
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}

.value,
.status-text {
  margin: 0;
}

.value {
  font-size: 0.95rem;
}

.section {
  display: grid;
  gap: 8px;
  padding: 4px 6px 8px;
}

.section + .section {
  border-top: 1px solid var(--border);
  padding-top: 10px;
}

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

.section-title {
  margin: 0;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.dropzone {
  display: grid;
  place-items: center;
  gap: 8px;
  min-height: 148px;
  padding: 16px;
  border: 1.5px dashed rgba(23, 23, 23, 0.22);
  border-radius: 24px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.86), rgba(245, 245, 243, 0.96));
  text-align: center;
  cursor: pointer;
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    box-shadow 180ms ease;
}

.dropzone-active {
  border-color: rgba(23, 23, 23, 0.38);
  box-shadow: 0 14px 28px rgba(0, 0, 0, 0.07);
}

.dropzone-title {
  margin: 0;
  font-size: 1.15rem;
  font-weight: 700;
}

.button-row,
.layer-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.button,
.icon-button {
  border: 1px solid transparent;
  border-radius: 999px;
  padding: 10px 16px;
  font-weight: 700;
  cursor: pointer;
  transition:
    transform 180ms ease,
    opacity 180ms ease,
    background 180ms ease;
}

.icon-button {
  padding: 7px 11px;
  font-size: 0.83rem;
}

.button:disabled,
.icon-button:disabled {
  cursor: not-allowed;
  opacity: 0.5;
}

.button:not(:disabled):hover,
.icon-button:not(:disabled):hover {
  transform: translateY(-1px);
}

.button-primary {
  background: linear-gradient(180deg, #2a2a2a, #111111);
  color: white;
  border-color: rgba(0, 0, 0, 0.4);
}

.button-secondary,
.icon-button {
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid rgba(23, 23, 23, 0.18);
  color: var(--ink);
}

.icon-danger {
  color: var(--error);
}

.field {
  display: grid;
  gap: 4px;
}

.source-options {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 180px;
  gap: 10px;
}

.field-toggle {
  align-content: start;
}

.inspector {
  display: grid;
  gap: 14px;
}

.field-grid {
  display: grid;
  column-gap: 10px;
  row-gap: 24px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.field-input {
  appearance: none;
  width: 100%;
  border: 1px solid rgba(23, 23, 23, 0.18);
  border-radius: 16px;
  padding: 10px 12px;
  background: rgba(255, 255, 255, 0.92);
  color: var(--ink);
  outline: none;
  box-shadow: none;
  transition:
    border-color 160ms ease,
    box-shadow 160ms ease,
    background 160ms ease;
}

.field-input:focus {
  border-color: rgba(23, 23, 23, 0.42);
  box-shadow: 0 0 0 3px rgba(23, 23, 23, 0.08);
}

.field-range {
  appearance: none;
  width: 100%;
  height: 8px;
  margin: 6px 0 0;
  border-radius: 999px;
  background: rgba(23, 23, 23, 0.12);
  outline: none;
}

.field-range::-webkit-slider-thumb {
  appearance: none;
  width: 18px;
  height: 18px;
  border: 1px solid rgba(23, 23, 23, 0.18);
  border-radius: 999px;
  background: white;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.12);
  cursor: pointer;
}

.field-range::-moz-range-thumb {
  width: 18px;
  height: 18px;
  border: 1px solid rgba(23, 23, 23, 0.18);
  border-radius: 999px;
  background: white;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.12);
  cursor: pointer;
}

.field-note {
  color: var(--muted);
  font-size: 0.96rem;
}

.field-checkbox {
  width: 18px;
  height: 18px;
  margin: 16px 0 0;
  accent-color: #171717;
}

.field-select {
  padding-right: 40px;
  background-image:
    linear-gradient(45deg, transparent 50%, rgba(23, 23, 23, 0.72) 50%),
    linear-gradient(135deg, rgba(23, 23, 23, 0.72) 50%, transparent 50%);
  background-position:
    calc(100% - 20px) calc(50% - 1px),
    calc(100% - 14px) calc(50% - 1px);
  background-size: 6px 6px, 6px 6px;
  background-repeat: no-repeat;
}

.field-textarea {
  resize: vertical;
  min-height: 88px;
}

.field-color {
  min-height: 50px;
  padding: 8px;
}

.meta-card {
  display: grid;
  gap: 6px;
  padding: 10px 12px;
  border: 1px solid rgba(23, 23, 23, 0.12);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.72);
}

.meta-card p {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  margin: 0;
}

.meta-card .meta-note {
  display: block;
}

.meta-card span {
  color: var(--muted);
}

.layer-list {
  display: grid;
  gap: 8px;
  padding: 0;
  margin: 0;
  list-style: none;
}

.layer-row {
  display: grid;
  gap: 8px;
  padding: 10px;
  border: 1px solid rgba(23, 23, 23, 0.12);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.68);
}

.layer-row-selected {
  border-color: rgba(23, 23, 23, 0.3);
  box-shadow: inset 0 0 0 1px rgba(23, 23, 23, 0.08);
}

.layer-main {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  width: 100%;
  padding: 0;
  text-align: left;
  cursor: pointer;
}

.layer-name {
  font-weight: 700;
}

.layer-kind {
  color: var(--muted);
  text-transform: capitalize;
}

.error-text {
  margin: 0;
  color: var(--error);
}

.workspace {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  align-self: start;
  position: sticky;
  top: 14px;
}

.editor-panel {
  display: grid;
  height: calc(100vh - 28px);
  padding: 8px;
}

.editor-viewport {
  display: grid;
  place-items: center;
  position: relative;
  overflow: hidden;
  min-height: 0;
  height: 100%;
  padding: 10px;
  border-radius: 20px;
  background:
    radial-gradient(circle at center, rgba(0, 0, 0, 0.035), transparent 56%),
    rgba(255, 255, 255, 0.82);
  outline: none;
}

.editor-stage-frame {
  position: relative;
  overflow: hidden;
  border-radius: 20px;
  box-shadow: 0 14px 28px rgba(0, 0, 0, 0.08);
}

.editor-stage-surface {
  position: absolute;
  inset: 0 auto auto 0;
  overflow: hidden;
  transform-origin: top left;
  background-color: #f7f7f7;
}

.stage-media,
.stage-layer {
  position: absolute;
}

.stage-media {
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  user-select: none;
  pointer-events: none;
}

.stage-layer {
  cursor: grab;
  user-select: none;
  touch-action: none;
  overflow: visible;
}

.stage-layer:active {
  cursor: grabbing;
}

.stage-layer-shell {
  display: inline-block;
}

.stage-layer-content {
  display: block;
  width: 100%;
  height: 100%;
}

.stage-selection-overlay {
  position: absolute;
  pointer-events: none;
  z-index: 3;
  overflow: visible;
}

.stage-selection-outline {
  width: 100%;
  height: 100%;
  border: 2px solid rgba(23, 23, 23, 0.72);
}

.stage-layer-text {
  display: block;
  min-width: 28px;
  height: auto;
  width: max-content;
  max-width: none;
  white-space: pre;
  line-height: 1;
}

.stage-layer-image {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.layer-handle {
  position: absolute;
  width: 24px;
  height: 24px;
  display: grid;
  place-items: center;
  padding: 0;
  border: 1px solid rgba(23, 23, 23, 0.18);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.94);
  box-shadow: 0 6px 14px rgba(0, 0, 0, 0.12);
  font-size: 0.9rem;
  line-height: 1;
  cursor: pointer;
  z-index: 2;
  pointer-events: auto;
}

.layer-handle-rotate {
  top: -14px;
  right: -14px;
  cursor: crosshair;
}

.layer-handle-scale {
  right: -14px;
  bottom: -14px;
  cursor: nwse-resize;
}

.editor-empty {
  display: grid;
  gap: 6px;
  max-width: 14rem;
  text-align: center;
}

.editor-empty p {
  margin: 0;
  font-weight: 700;
}

@media (max-width: 1180px) {
  .shell {
    grid-template-columns: 1fr;
  }

  .workspace {
    position: static;
  }

  .sidebar,
  .editor-panel {
    min-height: auto;
    height: auto;
  }
}

@media (max-width: 720px) {
  .shell {
    padding: 10px;
    gap: 10px;
  }

  .field-grid,
  .status-grid {
    grid-template-columns: 1fr;
  }

  .editor-viewport {
    min-height: 360px;
    padding: 8px;
  }
}