:root {
  --glass-bg: rgba(8, 28, 34, 0.56);
  --glass-bg-hover: rgba(13, 42, 50, 0.72);
  --glass-card: rgba(255, 255, 255, 0.06);
  --glass-card-hover: rgba(255, 255, 255, 0.13);
  --glass-border: rgba(255, 255, 255, 0.15);
  --glass-highlight: rgba(165, 243, 252, 0.32);
  --text-primary: #f8fafc;
  --text-secondary: rgba(226, 232, 240, 0.74);
  --text-muted: rgba(148, 163, 184, 0.72);
  --accent-aqua: #2dd4bf;
  --accent-cyan: #38bdf8;
  --accent-gold: #fbbf24;
  --font-display: 'Cormorant Garamond', Georgia, serif;
  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
  -webkit-user-select: none;
}

html,
body {
  width: 100vw;
  height: 100dvh;
  overflow: hidden;
  background-color: #04242c;
  font-family: var(--font-sans);
  color: var(--text-primary);
  touch-action: none;
}

#canvas-container {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  cursor: crosshair;
}

#canvas-container.grabbing-whirlpool {
  cursor: grabbing;
}

#canvas-container.hover-whirlpool {
  cursor: grab;
}

/* Frosted Glass Base */
.glass-panel {
  background: var(--glass-bg);
  backdrop-filter: blur(18px) saturate(145%);
  -webkit-backdrop-filter: blur(18px) saturate(145%);
  border: 1px solid var(--glass-border);
  box-shadow:
    0 16px 40px rgba(2, 14, 18, 0.42),
    inset 0 1px 0 rgba(255, 255, 255, 0.18);
}

/* Top Utility Bar */
.top-bar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: max(16px, env(safe-area-inset-top)) max(20px, env(safe-area-inset-right)) 12px max(20px, env(safe-area-inset-left));
  pointer-events: none;
  transition: opacity 0.45s cubic-bezier(0.22, 1, 0.36, 1), transform 0.45s cubic-bezier(0.22, 1, 0.36, 1);
}

.brand-pill {
  pointer-events: auto;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 8px 16px;
  border-radius: 999px;
}

.brand-title-group {
  display: flex;
  align-items: center;
  gap: 9px;
}

.brand-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-aqua);
  box-shadow: 0 0 10px var(--accent-aqua);
}

.brand-title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.25rem;
  letter-spacing: 0.02em;
  color: var(--text-primary);
  white-space: nowrap;
}

.pond-stats {
  display: flex;
  align-items: baseline;
  gap: 4px;
  padding-left: 12px;
  border-left: 1px solid rgba(255, 255, 255, 0.14);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-variant-numeric: tabular-nums;
  color: var(--accent-aqua);
}

.stats-unit {
  font-family: var(--font-sans);
  font-size: 0.72rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* Control Cluster */
.controls-cluster {
  pointer-events: auto;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px;
  border-radius: 999px;
}

.control-divider {
  width: 1px;
  height: 22px;
  background: rgba(255, 255, 255, 0.14);
  margin: 0 2px;
}

.control-btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  height: 36px;
  padding: 0 13px;
  border-radius: 999px;
  border: 1px solid transparent;
  background: transparent;
  color: var(--text-secondary);
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.22, 1, 0.36, 1);
  white-space: nowrap;
}

.control-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-primary);
  transform: translateY(-1px);
}

.control-btn:active {
  transform: translateY(0) scale(0.97);
}

.control-btn[aria-pressed="true"],
.control-btn.active {
  background: rgba(45, 212, 191, 0.2);
  border-color: rgba(45, 212, 191, 0.48);
  color: #ecfeff;
  box-shadow: 0 0 18px rgba(45, 212, 191, 0.22);
}

.btn-icon {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

/* Subtle Contextual Hint */
.pond-hint {
  position: fixed;
  bottom: calc(168px + env(safe-area-inset-bottom));
  left: 50%;
  transform: translateX(-50%);
  z-index: 8;
  pointer-events: none;
  padding: 6px 16px;
  border-radius: 999px;
  background: rgba(6, 24, 30, 0.42);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: rgba(241, 245, 249, 0.82);
  font-size: 0.76rem;
  letter-spacing: 0.02em;
  white-space: nowrap;
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.pond-hint.fade-out {
  opacity: 0;
  transform: translate(-50%, 6px);
}

/* Bottom Translucent Selection Panel */
.bottom-dock {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 10;
  display: flex;
  justify-content: center;
  padding: 0 max(16px, env(safe-area-inset-right)) max(18px, env(safe-area-inset-bottom)) max(16px, env(safe-area-inset-left));
  pointer-events: none;
  transition: opacity 0.45s cubic-bezier(0.22, 1, 0.36, 1), transform 0.45s cubic-bezier(0.22, 1, 0.36, 1);
}

.dock-inner {
  pointer-events: auto;
  width: min(690px, 100%);
  border-radius: 24px;
  padding: 10px 14px 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.dock-header {
  display: flex;
  align-items: center;
  justify-content: center;
}

.dock-caption {
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  font-weight: 600;
}

.koi-cards-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
}

.koi-card {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  padding: 8px 10px 10px;
  border-radius: 16px;
  background: var(--glass-card);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--text-primary);
  cursor: grab;
  transition:
    transform 0.24s cubic-bezier(0.22, 1, 0.36, 1),
    background 0.24s ease,
    border-color 0.24s ease,
    box-shadow 0.24s ease;
  touch-action: none;
}

.koi-card:hover {
  background: var(--glass-card-hover);
  border-color: var(--glass-highlight);
  transform: translateY(-4px);
  box-shadow: 0 10px 24px rgba(3, 18, 24, 0.36);
}

.koi-card:active,
.koi-card.dragging {
  cursor: grabbing;
  transform: translateY(-2px) scale(0.97);
  border-color: var(--accent-aqua);
  background: rgba(45, 212, 191, 0.14);
}

.koi-card-visual {
  width: 100%;
  height: 46px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: visible;
}

.koi-svg {
  width: 104px;
  height: 52px;
  transition: transform 0.3s cubic-bezier(0.22, 1, 0.36, 1);
  pointer-events: none;
}

.koi-card:hover .koi-svg {
  transform: scale(1.08) translateX(2px);
}

.koi-card-info {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  margin-top: 2px;
  pointer-events: none;
}

.koi-name {
  font-size: 0.86rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  color: var(--text-primary);
}

.koi-desc {
  font-size: 0.68rem;
  color: var(--text-secondary);
  white-space: nowrap;
}

/* Drag Floating Pill */
.drag-indicator {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 30;
  pointer-events: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 14px;
  border-radius: 999px;
  background: rgba(6, 28, 35, 0.82);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(45, 212, 191, 0.55);
  color: #f0fdfa;
  font-size: 0.78rem;
  font-weight: 500;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
  transform: translate(-50%, -160%);
  transition: opacity 0.15s ease;
}

.drag-indicator-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent-aqua);
  box-shadow: 0 0 8px var(--accent-aqua);
}

/* Screen Recording UI Hidden State */
body.ui-hidden .top-bar {
  opacity: 0;
  transform: translateY(-24px);
  pointer-events: none !important;
}

body.ui-hidden .top-bar *,
body.ui-hidden .bottom-dock * {
  pointer-events: none !important;
}

body.ui-hidden .bottom-dock {
  opacity: 0;
  transform: translateY(32px);
  pointer-events: none !important;
}

body.ui-hidden .pond-hint {
  opacity: 0 !important;
}

.restore-ui-btn {
  position: fixed;
  top: max(16px, env(safe-area-inset-top));
  right: max(20px, env(safe-area-inset-right));
  z-index: 25;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 13px;
  border-radius: 999px;
  background: rgba(8, 28, 34, 0.35);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.14);
  color: rgba(248, 250, 252, 0.75);
  font-family: var(--font-sans);
  font-size: 0.76rem;
  font-weight: 500;
  cursor: pointer;
  opacity: 0.22;
  transition: opacity 0.25s ease, background 0.25s ease, transform 0.2s ease;
}

.restore-ui-btn:hover,
.restore-ui-btn:focus-visible {
  opacity: 0.95;
  background: rgba(8, 28, 34, 0.78);
  transform: scale(1.03);
}

.restore-ui-btn svg {
  width: 15px;
  height: 15px;
}

.hidden {
  display: none !important;
}

/* Responsive Mobile Layout */
@media (max-width: 820px) {
  .top-bar {
    flex-wrap: wrap;
    gap: 8px;
    padding: max(10px, env(safe-area-inset-top)) 12px 8px;
  }

  .brand-pill {
    padding: 6px 12px;
    gap: 10px;
  }

  .brand-title {
    font-size: 1.08rem;
  }

  .controls-cluster {
    padding: 4px;
    gap: 3px;
    overflow-x: auto;
    max-width: 100%;
    scrollbar-width: none;
  }

  .controls-cluster::-webkit-scrollbar {
    display: none;
  }

  .control-btn {
    height: 33px;
    padding: 0 10px;
    font-size: 0.75rem;
    gap: 5px;
  }

  .bottom-dock {
    padding: 0 10px max(12px, env(safe-area-inset-bottom));
  }

  .dock-inner {
    padding: 8px 10px 10px;
    border-radius: 20px;
  }

  .koi-cards-grid {
    gap: 7px;
  }

  .koi-card {
    padding: 6px 6px 8px;
    border-radius: 13px;
  }

  .koi-card-visual {
    height: 38px;
  }

  .koi-svg {
    width: 84px;
    height: 42px;
  }

  .koi-name {
    font-size: 0.76rem;
  }

  .koi-desc {
    font-size: 0.6rem;
  }

  .pond-hint {
    bottom: calc(122px + env(safe-area-inset-bottom));
    font-size: 0.68rem;
    padding: 5px 12px;
  }
}

@media (max-width: 480px) {
  .brand-pill {
    width: 100%;
    justify-content: space-between;
  }

  .controls-cluster {
    width: 100%;
    justify-content: space-between;
  }

  .control-btn .btn-label {
    font-size: 0.7rem;
  }

  .koi-desc {
    display: none;
  }
}