/* grid-cell — individual shift cell with modern UI/UX */

.grid-cell-root {
  width: var(--cell-width);
  min-width: var(--cell-width);
  height: 52px; /* Reduced from 58px for denser layout */
  border-right: 1px solid var(--border-color-light);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  background: var(--background-primary);
}
.grid-cell-root:hover:not(.cursor-not-allowed) {
  background-color: var(--hover-bg);
  transform: translateY(-1px);
  box-shadow: 0 2px 4px -1px rgba(0, 0, 0, 0.1);
  z-index: 2;
}

.grid-cell-compact {
  height: 38px; /* Reduced from 42px for denser layout */
}

.grid-cell-shift-badge {
  font-size: 9px;
  font-weight: 800;
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  width: 90%;
  text-align: center;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-bottom: 2px;
  border: 1px solid rgba(0, 0, 0, 0.08);
  transition: all 0.2s ease;
  box-shadow: var(--shadow-sm);
}

/* Shift type color variations */
.grid-cell-shift-badge.shift-am {
  background-color: rgba(14, 165, 233, 0.15);
  color: #0c4a6e;
  border-color: rgba(14, 165, 233, 0.3);
}

.grid-cell-shift-badge.shift-pm {
  background-color: rgba(168, 85, 247, 0.15);
  color: #5b21b6;
  border-color: rgba(168, 85, 247, 0.3);
}

.grid-cell-shift-badge.shift-night {
  background-color: rgba(79, 70, 229, 0.15);
  color: #3730a3;
  border-color: rgba(79, 70, 229, 0.3);
}

.grid-cell-shift-badge.shift-full {
  background-color: rgba(16, 185, 129, 0.15);
  color: #065f46;
  border-color: rgba(16, 185, 129, 0.3);
}

.grid-cell-locked-overlay {
  position: absolute;
  inset: 0;
  background: rgba(241, 245, 249, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 5;
  backdrop-filter: blur(1px);
  border-radius: var(--radius-sm);
}

.grid-cell-tooltip {
  padding: var(--spacing-md) var(--spacing-lg);
  max-width: 240px;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-lg);
  background: var(--background-primary);
  border-radius: var(--radius-lg);
  font-size: 12px;
  line-height: 1.5;
}

/* Weekend + highlight helpers (applied via dynamic class) */
.grid-cell-bg-weekend { 
  background-color: var(--background-tertiary) !important;
}

.grid-cell-bg-reading-mode {
  background-color: rgba(255, 249, 196, 0.8) !important;
  box-shadow: inset 0 0 0 1px rgba(245, 158, 11, 0.3);
}
.grid-cell-bg-reading-mode-intersection {
  background-color: rgba(255, 241, 118, 0.9) !important;
  box-shadow: inset 0 0 0 1px rgba(245, 158, 11, 0.5);
}

.grid-cell-col-hovered {
  background-color: var(--highlight-bg) !important;
  box-shadow: inset 1px 0 0 var(--highlight-border), inset -1px 0 0 var(--highlight-border);
  z-index: 1;
}

/* Selection state */
.grid-cell-selected {
  background-color: rgba(79, 70, 229, 0.1) !important;
  box-shadow: inset 0 0 0 2px var(--primary-color);
}

/* Availability indicators */
.grid-cell-available {
  position: absolute;
  top: var(--spacing-xs);
  right: var(--spacing-xs);
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--success-color);
  box-shadow: 0 0 0 2px var(--background-primary);
  z-index: 3;
}

.grid-cell-unavailable {
  position: absolute;
  top: var(--spacing-xs);
  right: var(--spacing-xs);
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--danger-color);
  box-shadow: 0 0 0 2px var(--background-primary);
  z-index: 3;
}

.grid-cell-partial {
  position: absolute;
  top: var(--spacing-xs);
  right: var(--spacing-xs);
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--warning-color);
  box-shadow: 0 0 0 2px var(--background-primary);
  z-index: 3;
}

/* Empty state */
.grid-cell-empty {
  color: var(--text-tertiary);
  font-size: 10px;
  font-weight: 500;
  opacity: 0.6;
}

/* Conflict state */
.grid-cell-conflict {
  background-color: rgba(239, 68, 68, 0.08) !important;
  box-shadow: inset 0 0 0 1px rgba(239, 68, 68, 0.3);
  animation: pulse-conflict 2s ease-in-out infinite;
}

@keyframes pulse-conflict {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

/* Hover tooltip enhancement */
.grid-cell-root:hover .grid-cell-tooltip-target {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.grid-cell-tooltip-target {
  opacity: 0;
  visibility: hidden;
  transform: translateY(5px);
  transition: all 0.2s ease;
}