/* ============================================================
   BACK TO PIXEL — sprite-viewer.css
   Styles specific to the sprite viewer tool page.
   Requires main.css to be loaded first for :root variables.
   ============================================================ */

/* ============================================================
   VIEWER LAYOUT
   ============================================================ */
:root {
  --viewport-w: 420px;
  --viewport-h: 340px;
}

.viewer-layout {
  display: flex;
  gap: 0;
  min-height: 560px;
}

/* ============================================================
   VIEWER SIDEBAR — game/sprite picker
   ============================================================ */
.viewer-sidebar {
  width: 190px;
  flex-shrink: 0;
  border-right: 1px solid var(--border);
  background: var(--bg-panel);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  border-radius: var(--radius) 0 0 var(--radius);
}

.viewer-section-label {
  font-family: 'Cinzel', serif;
  font-size: 0.6rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--text-dim);
  padding: 12px 14px 6px;
  border-bottom: 1px solid var(--border);
}

/* Game selector buttons */
.viewer-game-list {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 5px;
}

.viewer-game-btn {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 8px 11px;
  background: transparent;
  border: 1px solid transparent;
  border-radius: 3px;
  color: var(--text-secondary);
  cursor: pointer;
  font-family: 'Cinzel', serif;
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-align: left;
  transition: all 0.15s;
  width: 100%;
}

.viewer-game-btn:hover {
  background: var(--bg-card);
  border-color: var(--border);
  color: var(--text-primary);
}

.viewer-game-btn.active {
  background: linear-gradient(135deg, #1e0c10, #2a1018);
  border-color: var(--ember);
  color: var(--ember-bright);
  box-shadow: 0 0 8px rgba(192,57,43,0.2) inset;
}

.game-logo-thumb {
  width: 20px;
  height: 20px;
  border-radius: 2px;
  background: var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.58rem;
  color: var(--text-dim);
  flex-shrink: 0;
  overflow: hidden;
}

.game-logo-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  background: transparent;
}

/* Sprite selector buttons */
.viewer-sprite-list {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 5px;
}

.viewer-sprite-btn {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 7px 11px;
  background: transparent;
  border: 1px solid transparent;
  border-radius: 3px;
  color: var(--text-secondary);
  cursor: pointer;
  font-family: 'Crimson Pro', serif;
  font-size: 0.9rem;
  text-align: left;
  transition: all 0.15s;
  width: 100%;
}

.viewer-sprite-btn:hover {
  background: var(--bg-card);
  border-color: var(--border);
  color: var(--text-primary);
}

.viewer-sprite-btn.active {
  background: linear-gradient(135deg, #1e0c10, #2a1018);
  border-color: var(--gold-dim);
  color: var(--gold);
}

.sprite-thumb {
  width: 30px;
  height: 30px;
  border-radius: 2px;
  background: transparent;
  flex-shrink: 0;
  overflow: hidden;
  border: 1px solid var(--border);
}

.sprite-thumb canvas {
  width: 100%;
  height: 100%;
  image-rendering: pixelated;
}

.viewer-no-sprites {
  padding: 14px;
  font-size: 0.8rem;
  color: var(--text-dim);
  font-style: italic;
}

/* ============================================================
   VIEWER STAGE — canvas + controls
   ============================================================ */
.viewer-stage {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 24px 20px;
  gap: 18px;
  min-width: 0;
  background: var(--bg-deep);
  border-radius: 0 var(--radius) var(--radius) 0;
}

.viewer-placeholder {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--text-dim);
  font-size: 0.9rem;
  font-style: italic;
  letter-spacing: 0.06em;
  gap: 14px;
}

.viewer-placeholder svg { opacity: 0.12; }

/* ============================================================
   VIEWPORT CANVAS AREA
   ============================================================ */
.viewport-wrap {
  position: relative;
}

.viewport-corner {
  position: absolute;
  width: 12px;
  height: 12px;
  border-color: var(--gold-dim);
  border-style: solid;
  z-index: 2;
}

.viewport-corner.tl { top: -2px; left: -2px; border-width: 2px 0 0 2px; }
.viewport-corner.tr { top: -2px; right: -2px; border-width: 2px 2px 0 0; }
.viewport-corner.bl { bottom: -2px; left: -2px; border-width: 0 0 2px 2px; }
.viewport-corner.br { bottom: -2px; right: -2px; border-width: 0 2px 2px 0; }

#sv-viewport {
  width: var(--viewport-w);
  height: var(--viewport-h);
  background: radial-gradient(ellipse at center, #1a0c10 0%, #0a0608 100%);
  border: 1px solid var(--border-bright);
  overflow: hidden;
  cursor: grab;
  position: relative;
  box-shadow:
    0 0 0 1px var(--bg-deep),
    0 0 30px rgba(192,57,43,0.1),
    inset 0 0 40px rgba(0,0,0,0.6);
}

#sv-viewport.dragging { cursor: grabbing; }

#sv-tile-canvas,
#sv-sprite-canvas {
  image-rendering: pixelated;
  display: block;
  position: absolute;
  top: 0;
  left: 0;
  pointer-events: none;
}

.drag-hint {
  position: absolute;
  bottom: 6px;
  left: 0;
  right: 0;
  text-align: center;
  font-size: 0.62rem;
  letter-spacing: 0.15em;
  color: var(--text-dim);
  text-transform: uppercase;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.4s;
}

#sv-viewport:hover .drag-hint { opacity: 1; }

/* ============================================================
   SPRITE INFO ROW
   ============================================================ */
.sprite-info-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  width: var(--viewport-w);
  padding: 0 2px;
}

.sprite-info-name {
  font-family: 'Cinzel', serif;
  font-size: 0.82rem;
  color: var(--gold);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.sprite-info-angle {
  font-size: 0.68rem;
  color: var(--text-dim);
  letter-spacing: 0.1em;
}

/* ============================================================
   ANIMATION BUTTONS
   ============================================================ */
.anim-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
}

.anim-btn {
  padding: 7px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 2px;
  color: var(--text-secondary);
  font-family: 'Cinzel', serif;
  font-size: 0.63rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all 0.15s;
}

.anim-btn:hover {
  border-color: var(--border-bright);
  color: var(--text-primary);
}

.anim-btn.active {
  background: linear-gradient(135deg, #2a0c10, #3a1018);
  border-color: var(--ember);
  color: var(--ember-bright);
  box-shadow: 0 0 10px rgba(192,57,43,0.2);
}

/* ============================================================
   TILE SELECTOR
   ============================================================ */
.tile-selector {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.tile-selector-label {
  font-family: 'Cinzel', serif;
  font-size: 0.6rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.tile-swatches {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: center;
}

.tile-swatch-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 5px 8px;
  cursor: pointer;
  transition: all 0.15s;
  color: var(--text-secondary);
  font-family: 'Cinzel', serif;
  font-size: 0.56rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.tile-swatch-btn:hover {
  border-color: var(--border-bright);
  color: var(--text-primary);
}

.tile-swatch-btn.active {
  border-color: var(--gold-dim);
  color: var(--gold);
  background: linear-gradient(135deg, #1e0c10, #2a1018);
}

.tile-swatch-img {
  width: 48px;
  height: 24px;
  object-fit: contain;
  image-rendering: pixelated;
  background: transparent;
}

.tile-swatch-none {
  width: 48px;
  height: 24px;
  border: 1px dashed var(--border);
  border-radius: 2px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  color: var(--text-dim);
}

/* ============================================================
   PLAYBACK CONTROLS
   ============================================================ */
.playback-controls {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}

.playback-btns {
  display: flex;
  align-items: center;
  gap: 10px;
}

.ctrl-divider {
  width: 1px;
  height: 18px;
  background: var(--border);
}

.ctrl-btn {
  padding: 7px 18px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 2px;
  color: var(--text-primary);
  font-family: 'Cinzel', serif;
  font-size: 0.63rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all 0.15s;
  min-width: 58px;
}

.ctrl-btn:hover { border-color: var(--border-bright); }

.ctrl-btn.play-active {
  background: linear-gradient(135deg, #2a0c10, #3a1018);
  border-color: var(--ember);
  color: var(--ember-bright);
  box-shadow: 0 0 12px rgba(192,57,43,0.25);
}

.speed-display {
  font-size: 0.68rem;
  color: var(--text-dim);
  min-width: 30px;
  text-align: center;
  letter-spacing: 0.05em;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 860px) {
  :root {
    --viewport-w: min(90vw, 360px);
    --viewport-h: calc(var(--viewport-w) * 0.7);
  }

  .viewer-layout {
    flex-direction: column;
  }

  .viewer-sidebar {
    width: 100%;
    border-right: none;
    border-bottom: 1px solid var(--border);
    max-height: 180px;
    border-radius: var(--radius) var(--radius) 0 0;
  }

  .viewer-game-list  { flex-direction: row; flex-wrap: wrap; }
  .viewer-sprite-list { flex-direction: row; flex-wrap: wrap; }

  .viewer-sprite-btn {
    flex-direction: column;
    width: auto;
    min-width: 70px;
    align-items: center;
    text-align: center;
  }

  .viewer-stage { border-radius: 0 0 var(--radius) var(--radius); }

  .sprite-info-row { width: var(--viewport-w); }
}