/* ============================================
   Localization Compare Demo - Styles
   ============================================ */

:root {
  --demo-bg: #0a0a0a;
  --demo-surface: #141414;
  --demo-border: rgba(255, 255, 255, 0.08);
  --demo-text: #e8e0d6;
  --demo-text-muted: #777;
  --demo-accent: #c9a96e;
  --demo-accent-glow: rgba(201, 169, 110, 0.3);
  --header-height: 56px;
  --controls-height: 48px;
  --slider-pct: 50%;
}

/* ---- Header ---- */
.demo-header {
  position: sticky;
  top: 0;
  height: var(--header-height);
  background: var(--demo-surface);
  border-bottom: 1px solid var(--demo-border);
  display: flex;
  align-items: center;
  padding: 0 24px;
  user-select: none;
  z-index: 100;
}

.demo-header-inner {
  display: flex;
  align-items: baseline;
  gap: 16px;
}

.demo-title {
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 1px;
  color: var(--demo-accent);
}

.demo-subtitle {
  font-size: 0.72rem;
  color: var(--demo-text-muted);
  font-weight: 400;
}

/* ---- Compare Viewport ---- */
.compare-viewport {
  position: relative;
  min-height: 0;
}

/* ---- Scroll Container (wrapper for layers) ---- */
.compare-scroll {
  position: relative;
  width: 100%;
}

/* ---- Layers ---- */
.compare-layer {
  width: 100%;
}

/* English layer: absolute, behind, clipped to left portion */
.compare-layer--en {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1;
  clip-path: inset(0 calc(100% - var(--slider-pct)) 0 0);
}

/* Japanese layer: flows normally (determines scroll height), clipped to right */
.compare-layer--ja {
  position: relative;
  z-index: 2;
  clip-path: inset(0 0 0 var(--slider-pct));
}

/* ---- Pane Labels ---- */
.pane-label {
  position: fixed;
  z-index: 110;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: rgba(10, 10, 10, 0.75);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--demo-border);
  border-radius: 8px;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--demo-text);
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.pane-label--left {
  top: calc(var(--header-height) + 16px);
  left: 16px;
}

.pane-label--right {
  top: calc(var(--header-height) + 16px);
  right: 16px;
}

.pane-label-flag {
  font-size: 1rem;
  line-height: 1;
}

/* ---- Slider Handle ---- */
.slider-handle {
  position: fixed;
  top: var(--header-height);
  left: var(--slider-pct);
  transform: translateX(-50%);
  width: 4px;
  height: calc(100vh - var(--header-height) - var(--controls-height));
  z-index: 105;
  display: flex;
  flex-direction: column;
  align-items: center;
  cursor: ew-resize;
  user-select: none;
  -webkit-user-select: none;
  pointer-events: auto;
}

.slider-line {
  flex: 1;
  width: 2px;
  background: linear-gradient(
    to bottom,
    transparent,
    var(--demo-accent) 20%,
    var(--demo-accent) 80%,
    transparent
  );
  opacity: 0.6;
  pointer-events: none;
}

.slider-knob {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--demo-surface);
  border: 2px solid var(--demo-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--demo-accent);
  box-shadow: 0 0 20px var(--demo-accent-glow), 0 4px 12px rgba(0,0,0,0.5);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  flex-shrink: 0;
}

.slider-knob:hover,
.slider-handle.dragging .slider-knob {
  transform: scale(1.15);
  box-shadow: 0 0 30px var(--demo-accent-glow), 0 4px 20px rgba(0,0,0,0.6);
}

.slider-handle.dragging .slider-line {
  opacity: 1;
}

/* ---- Controls Bar ---- */
.controls-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: var(--controls-height);
  background: var(--demo-surface);
  border-top: 1px solid var(--demo-border);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 32px;
  padding: 0 24px;
  user-select: none;
  z-index: 100;
}

/* Reset Button */
.reset-btn {
  padding: 6px 16px;
  border: 1px solid var(--demo-border);
  border-radius: 6px;
  background: transparent;
  color: var(--demo-text-muted);
  font-size: 0.72rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s ease;
  font-family: inherit;
}

.reset-btn:hover {
  border-color: var(--demo-accent);
  color: var(--demo-accent);
}

/* Bottom spacer for controls bar */
.compare-viewport::after {
  content: '';
  display: block;
  height: var(--controls-height);
}

/* ---- Responsive ---- */
@media (max-width: 600px) {
  .demo-header-inner {
    flex-direction: column;
    gap: 2px;
  }

  .pane-label {
    font-size: 0.6rem;
    padding: 4px 10px;
  }

  .slider-knob {
    width: 36px;
    height: 36px;
  }

  .slider-knob svg {
    width: 16px;
    height: 16px;
  }
}