/* ============================================================
   STUDIO — Variation A
   Aseprite / IDE — dense, technical, pro-tool
   ============================================================ */

:root {
  --bg-0: #0a0b0d;
  --bg-1: #121418;
  --bg-2: #181b21;
  --bg-3: #20242c;
  --bg-4: #2a2f38;
  --border: #25292f;
  --border-bright: #353a44;
  --text: #d8dce3;
  --text-dim: #7a818b;
  --text-faint: #4a5059;
  --accent: #FF5540;
  --accent-soft: rgba(255, 85, 64, 0.15);
  --accent-2: #ff9b8e;
  --danger: #ff5d5d;
  --green: #58e58e;

  --font-ui: 'Inter', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', Menlo, monospace;

  --row-h: 22px;
  --pane-pad: 8px;
  --check-a: #14171c;
  --check-b: #1a1e24;
  
  --left-w: 220px;
  --right-w: 260px;
  --anim-w: 40%;
}

[data-theme="light"] {
  --bg-0: #f4f4f0;
  --bg-1: #fafaf7;
  --bg-2: #ffffff;
  --bg-3: #ececea;
  --bg-4: #dedede;
  --border: #d8d8d4;
  --border-bright: #c4c4c0;
  --text: #1c1d20;
  --text-dim: #65676d;
  --text-faint: #999ba0;
  --accent: #e03020;
  --accent-soft: rgba(224, 48, 32, 0.12);
  --accent-2: #ff7060;
  --check-a: #ffffff;
  --check-b: #ececea;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; overflow: hidden; }
body {
  font-family: var(--font-ui);
  font-size: 12px;
  color: var(--text);
  background: var(--bg-0);
  -webkit-font-smoothing: antialiased;
  user-select: none;
}
input, button, select, textarea { font-family: inherit; font-size: inherit; color: inherit; }
button { background: none; border: none; cursor: pointer; color: inherit; }

/* ─────────── App grid ─────────── */
.app {
  display: grid;
  grid-template-rows: 32px 1fr 22px;
  height: 100vh;
}

/* ─────────── Title bar ─────────── */
.titlebar {
  display: flex;
  align-items: center;
  background: var(--bg-1);
  border-bottom: 1px solid var(--border);
  padding: 0 8px;
  gap: 14px;
  font-size: 11px;
}
.tb-brand {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--text);
  font-weight: 600;
  letter-spacing: 0.02em;
}
.tb-brand .logo {
  width: 14px; height: 14px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: 1fr 1fr;
  gap: 1.5px;
}
.tb-brand .logo i {
  background: var(--accent);
  border-radius: 1px;
}
.tb-brand .logo i:nth-child(2) { background: var(--accent-2); opacity: .8; }
.tb-brand .logo i:nth-child(3) { background: var(--text-dim); opacity: .55; }
.tb-brand .logo i:nth-child(4) { background: var(--accent); opacity: .5; }
.tb-brand small {
  color: var(--text-faint);
  font-weight: 400;
  margin-left: 4px;
  font-family: var(--font-mono);
  font-size: 10px;
}

.tb-menu { display: flex; gap: 1px; }
.tb-menu button {
  padding: 4px 9px;
  border-radius: 3px;
  color: var(--text-dim);
  font-size: 11px;
}
.tb-menu button:hover {
  background: var(--bg-3);
  color: var(--text);
}

.tb-spacer { flex: 1; }

.tb-right {
  display: flex;
  align-items: center;
  gap: 4px;
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 10px;
}
.tb-right .pill {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 6px;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 3px;
}
.tb-right .pill b { color: var(--text); font-weight: 500; }
.tb-right .pill .dot { width: 5px; height: 5px; border-radius: 50%; background: var(--green); }

.theme-toggle {
  width: 22px; height: 18px;
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: 3px;
  color: var(--text-dim);
}
.theme-toggle:hover { background: var(--bg-3); color: var(--text); }

/* ─────────── Command bar ─────────── */
.cmdbar {
  display: flex;
  align-items: center;
  gap: 1px;
  background: var(--bg-1);
  border-bottom: 1px solid var(--border);
  padding: 0 4px;
  overflow-x: auto;
  scrollbar-width: none;
}
.cmdbar::-webkit-scrollbar { display: none; }
.cmd-group {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 0 8px;
  height: 100%;
  border-right: 1px solid var(--border);
}
.cmd-group:last-child { border-right: none; }
.cmd-group label {
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.cmd-input {
  width: 56px;
  height: 22px;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 0 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  text-align: right;
  color: var(--text);
  outline: none;
  -moz-appearance: textfield;
}
.cmd-input::-webkit-outer-spin-button,
.cmd-input::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
.cmd-input:focus { border-color: var(--accent); background: var(--bg-3); }
.cmd-input.text { width: 110px; text-align: left; }

.cmd-btn {
  height: 22px;
  padding: 0 8px;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 3px;
  color: var(--text-dim);
  display: inline-flex; align-items: center; gap: 4px;
  font-size: 11px;
}
.cmd-btn:hover { color: var(--text); border-color: var(--border-bright); }
.cmd-btn.accent { color: var(--accent); border-color: rgba(245, 166, 35, 0.4); background: var(--accent-soft); }
.cmd-btn.accent:hover { background: rgba(245, 166, 35, 0.22); }

/* ─────────── Workspace ─────────── */
.workspace {
  display: grid;
  grid-template-columns: var(--left-w) 4px 1fr 4px var(--right-w);
  background: var(--bg-0);
  overflow: hidden;
}
.pane {
  background: var(--bg-1);
  border-right: 1px solid var(--border);
  overflow: hidden;
  display: flex; flex-direction: column;
}
.pane:last-child { border-right: none; border-left: 1px solid var(--border); }
.pane.center {
  background: var(--bg-0);
  border: none;
  display: flex;
  flex-direction: column;
}

/* ─────────── Resizers ─────────── */
.resizer-v {
  cursor: col-resize; background: var(--border);
  transition: background 0.2s; z-index: 10;
}
.resizer-v:hover, .resizer-v.active { background: var(--accent); }

.resizer-h {
  cursor: row-resize; background: var(--border);
  transition: background 0.2s; z-index: 10;
}
.resizer-h:hover, .resizer-h.active { background: var(--accent); }

/* Pane header */
.pane-h {
  height: 24px;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 8px;
  background: var(--bg-1);
  border-bottom: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-faint);
  flex-shrink: 0;
}
.pane-h .actions { display: flex; gap: 2px; }
.pane-h .icon-btn {
  width: 18px; height: 18px;
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: 2px;
  color: var(--text-faint);
}
.pane-h .icon-btn:hover { background: var(--bg-3); color: var(--text); }
.pane-h .icon-btn.danger:hover { color: var(--danger); }

/* ─────────── Frames pane ─────────── */
.frames-content { flex: 1; overflow-y: auto; }

.dropzone {
  margin: 8px;
  padding: 22px 12px;
  border: 1px dashed var(--border-bright);
  border-radius: 4px;
  background: var(--bg-2);
  text-align: center;
  cursor: pointer;
  transition: all .12s;
}
.dropzone:hover, .dropzone.drag-over {
  border-color: var(--accent);
  background: var(--accent-soft);
  color: var(--text);
}
.dropzone svg { color: var(--text-dim); margin-bottom: 8px; }
.dropzone .dz-title { font-size: 11px; color: var(--text); margin-bottom: 2px; }
.dropzone .dz-sub { font-size: 10px; color: var(--text-faint); font-family: var(--font-mono); }

.dropzone.compact {
  padding: 10px;
  margin: 6px 8px;
}
.dropzone.compact svg { display: none; }
.dropzone.compact .dz-title { font-size: 10px; font-family: var(--font-mono); color: var(--text-dim); }
.dropzone.compact .dz-sub { display: none; }

.frame-list { padding: 2px 0; }
.frame-row {
  display: grid;
  grid-template-columns: 16px 28px 1fr auto;
  gap: 6px;
  align-items: center;
  height: var(--row-h);
  padding: 0 8px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--text-dim);
  cursor: grab;
  border-left: 2px solid transparent;
}
.frame-row:hover { background: var(--bg-2); color: var(--text); }
.frame-row.active {
  background: var(--accent-soft);
  border-left-color: var(--accent);
  color: var(--text);
}
.frame-row .fr-idx { color: var(--text-faint); text-align: right; }
.frame-row .fr-thumb {
  width: 22px; height: 22px;
  background:
    linear-gradient(45deg, var(--check-a) 25%, transparent 25%),
    linear-gradient(-45deg, var(--check-a) 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, var(--check-a) 75%),
    linear-gradient(-45deg, transparent 75%, var(--check-a) 75%);
  background-size: 6px 6px;
  background-position: 0 0, 0 3px, 3px -3px, -3px 0px;
  background-color: var(--check-b);
  border: 1px solid var(--border);
  border-radius: 2px;
  display: grid;
  place-items: center;
  overflow: hidden;
  image-rendering: pixelated;
}
.frame-row .fr-thumb img { max-width: 100%; max-height: 100%; image-rendering: pixelated; }
.frame-row .fr-name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.frame-row .fr-del {
  width: 16px; height: 16px;
  display: none; align-items: center; justify-content: center;
  border-radius: 2px;
  color: var(--text-faint);
}
.frame-row:hover .fr-del { display: inline-flex; }
.frame-row .fr-del:hover { color: var(--danger); background: var(--bg-3); }
.frame-row.dragging { opacity: 0.4; }
.frame-row.drop-before { border-top: 1px solid var(--accent); }
.frame-row.drop-after { border-bottom: 1px solid var(--accent); }

/* ─────────── Center: canvas ─────────── */
.canvas-area {
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  background:
    linear-gradient(45deg, var(--bg-0) 25%, transparent 25%),
    linear-gradient(-45deg, var(--bg-0) 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, var(--bg-0) 75%),
    linear-gradient(-45deg, transparent 75%, var(--bg-0) 75%);
  background-size: 24px 24px;
  background-position: 0 0, 0 12px, 12px -12px, -12px 0px;
  background-color: #0d0f12;
}
[data-theme="light"] .canvas-area { background-color: #e8e8e4; }
.canvas-area::-webkit-scrollbar { width: 12px; height: 12px; }
.canvas-area::-webkit-scrollbar-track { background: var(--bg-1); }
.canvas-area::-webkit-scrollbar-thumb { background: var(--bg-3); border: 3px solid var(--bg-1); border-radius: 6px; }
.canvas-area::-webkit-scrollbar-thumb:hover { background: var(--bg-4); }

.canvas-stage {
  min-width: 100%;
  min-height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 32px;
}
.canvas-frame {
  position: relative;
  flex-shrink: 0;
  background:
    linear-gradient(45deg, var(--check-b) 25%, transparent 25%),
    linear-gradient(-45deg, var(--check-b) 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, var(--check-b) 75%),
    linear-gradient(-45deg, transparent 75%, var(--check-b) 75%);
  background-size: 16px 16px;
  background-position: 0 0, 0 8px, 8px -8px, -8px 0;
  background-color: var(--check-a);
  outline: 1px solid var(--border-bright);
  box-shadow: 0 4px 24px rgba(0,0,0,0.4), 0 0 0 1px rgba(255,255,255,0.02);
  transform-origin: center;
  image-rendering: pixelated;
  overflow: hidden;
}
.canvas-frame canvas {
  display: block;
  width: 100%;
  height: 100%;
  image-rendering: pixelated;
}
.canvas-frame .label-tl,
.canvas-frame .label-br {
  position: absolute;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--accent);
  background: rgba(10, 11, 13, 0.85);
  padding: 1px 5px;
  border-radius: 2px;
  white-space: nowrap;
  pointer-events: none;
}
.canvas-frame .label-tl { top: -22px; left: 0; }
.canvas-frame .label-br { bottom: -22px; right: 0; }

.empty-canvas {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  pointer-events: none;
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 11px;
  text-align: center;
}
.empty-canvas pre {
  font-family: var(--font-mono);
  font-size: 10px;
  line-height: 1.3;
  color: var(--text-faint);
  opacity: 0.5;
  margin-top: 12px;
  white-space: pre;
}

/* zoom controls (overlay top-left of canvas-area) */
.zoom-overlay {
  position: absolute;
  top: 8px;
  left: 8px;
  display: flex;
  gap: 1px;
  background: var(--bg-1);
  border: 1px solid var(--border);
  border-radius: 4px;
  z-index: 5;
  font-family: var(--font-mono);
  font-size: 10px;
}
.zoom-overlay button {
  width: 22px; height: 22px;
  color: var(--text-dim);
}
.zoom-overlay button:hover { background: var(--bg-3); color: var(--text); }
.zoom-overlay span {
  display: inline-flex; align-items: center; padding: 0 6px;
  border-left: 1px solid var(--border);
  border-right: 1px solid var(--border);
  color: var(--text);
  min-width: 44px; justify-content: center;
}

.canvas-actions-overlay {
  position: absolute;
  top: 8px; right: 8px;
  display: flex; gap: 1px;
  background: var(--bg-1);
  border: 1px solid var(--border);
  border-radius: 4px;
  z-index: 5;
}
.canvas-actions-overlay button {
  height: 22px; padding: 0 8px;
  color: var(--text-dim);
  font-size: 10px;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  display: inline-flex; align-items: center; gap: 4px;
}
.canvas-actions-overlay button:hover { background: var(--bg-3); color: var(--text); }
.canvas-actions-overlay button.active { color: var(--accent); background: var(--accent-soft); }

/* ─────────── Splitter ─────────── */
.split-h {
  /* Handled by .resizer-h now */
}

/* ─────────── Timeline ─────────── */
.timeline {
  background: var(--bg-1);
  border-top: 1px solid var(--border);
  display: grid;
  grid-template-rows: 24px 1fr 28px;
  overflow: hidden;
}
.tl-h { display: flex; align-items: center; padding: 0 8px; gap: 8px;
  border-bottom: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-faint);
}
.tl-h .anim-preview {
  width: 40px; height: 40px;
  position: absolute;
  /* fallback if needed */
}
.tl-strip {
  display: flex;
  align-items: center;
  gap: 2px;
  padding: 6px 8px;
  overflow-x: auto;
  overflow-y: hidden;
  scrollbar-width: thin;
}
.tl-strip::-webkit-scrollbar { height: 6px; }
.tl-strip::-webkit-scrollbar-thumb { background: var(--bg-3); border-radius: 3px; }

.tl-cell {
  flex-shrink: 0;
  width: 56px;
  height: 56px;
  background:
    linear-gradient(45deg, var(--check-b) 25%, transparent 25%),
    linear-gradient(-45deg, var(--check-b) 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, var(--check-b) 75%),
    linear-gradient(-45deg, transparent 75%, var(--check-b) 75%);
  background-size: 8px 8px;
  background-position: 0 0, 0 4px, 4px -4px, -4px 0;
  background-color: var(--check-a);
  border: 1px solid var(--border);
  border-radius: 2px;
  display: grid; place-items: center;
  overflow: hidden;
  position: relative;
  cursor: pointer;
}
.tl-cell img { max-width: 90%; max-height: 90%; image-rendering: pixelated; }
.tl-cell.active { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent), 0 0 12px rgba(245, 166, 35, 0.3); }
.tl-cell .tl-num {
  position: absolute;
  top: 2px; left: 2px;
  font-family: var(--font-mono);
  font-size: 9px;
  color: var(--text-faint);
  background: rgba(10, 11, 13, 0.7);
  padding: 0 3px;
  border-radius: 2px;
}
.tl-cell.active .tl-num { color: var(--accent); }

.tl-controls {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 0 8px;
  border-top: 1px solid var(--border);
  background: var(--bg-2);
}
.tl-btn {
  width: 22px; height: 22px;
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: 3px;
  color: var(--text-dim);
}
.tl-btn:hover { background: var(--bg-3); color: var(--text); }
.tl-btn.play {
  width: 28px;
  background: var(--accent);
  color: #1a1207;
}
.tl-btn.play:hover { background: #ffba35; }

.tl-fps {
  display: flex; align-items: center; gap: 6px;
  margin-left: 4px;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-faint);
}
.tl-fps input[type="range"] {
  width: 100px;
  accent-color: var(--accent);
}
.tl-spacer { flex: 1; }

.tl-info {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-dim);
}

/* preview canvas in tl header */
.tl-preview-wrap {
  width: 14px; height: 14px;
  background: var(--check-a);
  border: 1px solid var(--border);
  border-radius: 1px;
  overflow: hidden;
  display: grid; place-items: center;
}
.tl-preview-wrap canvas { width: 100%; height: 100%; image-rendering: pixelated; }

/* ─────────── Inspector ─────────── */
.inspector { overflow-y: auto; }
.section { border-bottom: 1px solid var(--border); }
.section-h {
  display: flex; align-items: center; gap: 6px;
  padding: 0 8px;
  height: 24px;
  background: var(--bg-2);
  border-bottom: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text);
  cursor: pointer;
}
.section-h .chev { color: var(--text-faint); transition: transform .12s; }
.section.collapsed .chev { transform: rotate(-90deg); }
.section.collapsed .section-body { display: none; }
.section-body { padding: 8px; display: flex; flex-direction: column; gap: 8px; }

.field {
  display: grid;
  grid-template-columns: 60px 1fr;
  align-items: center;
  gap: 8px;
  font-size: 11px;
}
.field label {
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.field .input,
.field .text-in,
.field .num {
  height: 22px;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 0 6px;
  font-family: var(--font-mono);
  color: var(--text);
  outline: none;
}
.field .num { text-align: right; -moz-appearance: textfield; }
.field .num::-webkit-inner-spin-button { -webkit-appearance: none; }
.field .num:focus, .field .text-in:focus { border-color: var(--accent); }

.field-row { display: flex; gap: 4px; align-items: center; }
.field-row .num { flex: 1; min-width: 0; }
.field-row .sep { color: var(--text-faint); font-family: var(--font-mono); }

.preset-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2px;
}
.preset-grid button {
  height: 22px;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 2px;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-dim);
}
.preset-grid button:hover { border-color: var(--border-bright); color: var(--text); }
.preset-grid button.active {
  background: var(--accent-soft);
  border-color: var(--accent);
  color: var(--accent);
}

.range-row {
  display: flex; align-items: center; gap: 6px;
}
.range-row input[type="range"] { flex: 1; accent-color: var(--accent); height: 16px; }
.range-row .num { width: 48px; }

.export-list { display: flex; flex-direction: column; gap: 1px; }
.export-row {
  display: grid;
  grid-template-columns: 18px 1fr auto;
  gap: 8px;
  align-items: center;
  height: 28px;
  padding: 0 8px;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 2px;
  cursor: pointer;
  font-size: 11px;
  color: var(--text);
}
.export-row:hover {
  border-color: var(--border-bright);
  background: var(--bg-3);
}
.export-row .ext {
  font-family: var(--font-mono);
  font-size: 9px;
  color: var(--accent);
  text-align: center;
}
.export-row .meta {
  font-family: var(--font-mono);
  font-size: 9px;
  color: var(--text-faint);
}
.export-row.primary {
  background: var(--accent-soft);
  border-color: rgba(245, 166, 35, 0.4);
}
.export-row.primary .ext { color: var(--accent); }
.export-row.primary:hover { background: rgba(245, 166, 35, 0.22); }

/* ─────────── Status bar ─────────── */
.statusbar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 8px;
  background: var(--bg-1);
  border-top: 1px solid var(--border);
  color: var(--text-dim);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.02em;
  font-weight: 400;
}
.statusbar .sb-item { display: flex; align-items: center; gap: 4px; }
.statusbar .sb-item b { font-weight: 700; color: var(--accent); }
.statusbar .sb-spacer { flex: 1; }
.statusbar .sb-item.muted { opacity: 0.65; }

/* tweaks panel button anchor */
.tweaks-anchor { position: fixed; bottom: 28px; right: 12px; z-index: 100; }

/* toast */
.toast {
  position: fixed;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--bg-3);
  border: 1px solid var(--border-bright);
  color: var(--text);
  padding: 8px 14px;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 11px;
  opacity: 0;
  pointer-events: none;
  transition: all .2s;
  z-index: 200;
  box-shadow: 0 4px 16px rgba(0,0,0,0.4);
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
.toast.ok { border-color: var(--green); }
.toast.err { border-color: var(--danger); }

/* ─── icon style variants (line / solid / pixel) ─── */
[data-icons="solid"] svg [data-stroke] { fill: currentColor; stroke: none; }
[data-icons="pixel"] svg { shape-rendering: crispEdges; }
[data-icons="pixel"] svg [data-stroke] { stroke-linecap: square; stroke-linejoin: miter; }