/* ─── Spreadsheet View ─────────────────────────────────────── */

.spreadsheet-wrapper {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--color-bg);
}

/* Formula bar */
.spreadsheet-formula-bar {
  display: flex;
  align-items: center;
  height: 32px;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: 0 8px;
  gap: 8px;
  flex-shrink: 0;
}

.formula-bar-cell-ref {
  font-size: 12px;
  font-weight: 600;
  font-family: var(--font-mono);
  color: var(--color-text);
  min-width: 48px;
  text-align: center;
  padding: 2px 8px;
  background: var(--color-mist);
  border-radius: 3px;
}

.formula-bar-separator {
  width: 1px;
  height: 18px;
  background: var(--color-border);
}

.formula-bar-value {
  flex: 1;
  font-size: 13px;
  color: var(--color-text);
  cursor: text;
  padding: 2px 4px;
  min-height: 20px;
}

.formula-bar-input {
  flex: 1;
  font-size: 13px;
  border: 1px solid var(--color-primary);
  border-radius: 3px;
  padding: 2px 6px;
  outline: none;
  font-family: var(--font-mono);
}

/* Grid container */
.spreadsheet-grid-container {
  flex: 1;
  overflow: auto;
}

.spreadsheet-grid {
  border-collapse: collapse;
  table-layout: fixed;
  font-size: 13px;
  min-width: 100%;
}

/* Corner cell (top-left) */
.spreadsheet-corner {
  width: 40px;
  min-width: 40px;
  background: var(--color-mist);
  border: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  left: 0;
  z-index: 3;
}

/* Column headers */
.spreadsheet-col-header {
  height: 24px;
  background: var(--color-mist);
  border: 1px solid var(--color-border);
  font-size: 11px;
  font-weight: 600;
  color: var(--color-text-secondary);
  text-align: center;
  position: sticky;
  top: 0;
  z-index: 2;
  user-select: none;
}

.spreadsheet-col-header.active {
  background: var(--color-primary);
  color: white;
}

.col-resize-handle {
  position: absolute;
  right: -2px;
  top: 0;
  width: 5px;
  height: 100%;
  cursor: col-resize;
  z-index: 4;
}

/* Row resize handle */
.spreadsheet-row-header {
  position: relative;
}

.row-resize-handle {
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 100%;
  height: 5px;
  cursor: row-resize;
  z-index: 4;
}

.row-resize-handle:hover {
  background: var(--color-primary);
  opacity: 0.4;
}

.col-resize-handle:hover {
  background: var(--color-primary);
  opacity: 0.4;
}

/* Row headers */
.spreadsheet-row-header {
  width: 40px;
  min-width: 40px;
  background: var(--color-mist);
  border: 1px solid var(--color-border);
  font-size: 11px;
  font-weight: 600;
  color: var(--color-text-secondary);
  text-align: center;
  position: sticky;
  left: 0;
  z-index: 1;
  user-select: none;
}

.spreadsheet-row-header.active {
  background: var(--color-primary);
  color: white;
}

/* Data cells */
.spreadsheet-cell {
  height: 24px;
  border: 1px solid var(--color-border);
  padding: 2px 6px;
  background: var(--color-surface);
  cursor: cell;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}

.spreadsheet-cell.selected {
  background: rgba(45, 95, 45, 0.08);
}

.spreadsheet-cell.cursor {
  outline: 2px solid var(--color-primary);
  outline-offset: -1px;
  z-index: 1;
  position: relative;
}

.spreadsheet-cell-input {
  width: 100%;
  height: 100%;
  border: none;
  outline: none;
  padding: 0;
  margin: 0;
  font: inherit;
  background: transparent;
  box-sizing: border-box;
}

.spreadsheet-cell-select {
  width: 100%;
  height: 100%;
  border: none;
  outline: none;
  font: inherit;
  background: transparent;
  cursor: pointer;
}

.spreadsheet-checkbox {
  width: 16px;
  height: 16px;
  cursor: pointer;
  accent-color: var(--color-primary);
}

.spreadsheet-cell.formula-cell {
  color: var(--color-primary);
}

/* Frozen rows */
.frozen-row td,
.frozen-row th {
  position: sticky;
  top: 24px; /* below column header */
  z-index: 2;
  background: var(--color-surface);
}

.frozen-row .spreadsheet-row-header {
  z-index: 3;
}

/* Context menu */
.ss-ctx-backdrop {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  z-index: 99;
}

.ss-ctx-menu {
  position: fixed;
  z-index: 100;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  padding: 4px 0;
  min-width: 200px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.18);
}

.ss-ctx-item {
  display: block;
  width: 100%;
  padding: 6px 16px;
  border: none;
  background: transparent;
  cursor: pointer;
  font-size: 13px;
  color: var(--color-text);
  text-align: left;
}

.ss-ctx-item:hover {
  background: var(--color-mist);
}

.ss-ctx-sep {
  height: 1px;
  background: var(--color-border);
  margin: 4px 8px;
}

/* Cell edit wrapper for autocomplete positioning */
.spreadsheet-cell-edit-wrapper {
  position: relative;
  width: 100%;
  height: 100%;
}

/* Formula autocomplete popup */
.ss-autocomplete {
  position: absolute;
  top: 100%;
  left: 0;
  z-index: 50;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  min-width: 200px;
  max-height: 200px;
  overflow-y: auto;
}

.ss-autocomplete-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 4px 8px;
  cursor: pointer;
  font-size: 12px;
}

.ss-autocomplete-item:hover,
.ss-autocomplete-item.active {
  background: var(--color-primary);
  color: white;
}

.ss-ac-name {
  font-weight: 600;
  font-family: var(--font-mono);
}

.ss-ac-desc {
  color: var(--color-text-secondary);
  font-size: 11px;
}

.ss-autocomplete-item.active .ss-ac-desc {
  color: rgba(255, 255, 255, 0.7);
}

/* Column filter icon */
.col-filter-icon {
  font-size: 9px;
  opacity: 0.4;
  cursor: pointer;
  margin-left: 2px;
}

.col-filter-icon:hover {
  opacity: 1;
}

/* Filter popup */
.ss-filter-popup {
  position: fixed;
  top: 80px;
  right: 20px;
  z-index: 100;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  padding: 4px 0;
  min-width: 180px;
  max-height: 300px;
  overflow-y: auto;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.18);
}

.ss-filter-header {
  padding: 6px 12px;
  font-size: 12px;
  font-weight: 600;
  color: var(--color-text-secondary);
}

/* Find/Replace bar */
.ss-find-bar {
  position: absolute;
  top: 0;
  right: 0;
  z-index: 60;
  display: flex;
  align-items: center;
  gap: 4px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 0 0 0 6px;
  padding: 6px 10px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.12);
}

.ss-find-input {
  width: 120px;
  padding: 3px 6px;
  border: 1px solid var(--color-border);
  border-radius: 3px;
  font-size: 12px;
  outline: none;
}

.ss-find-input:focus {
  border-color: var(--color-primary);
}

.ss-find-count {
  font-size: 11px;
  color: var(--color-text-secondary);
  min-width: 50px;
}

.ss-find-btn {
  padding: 3px 8px;
  border: 1px solid var(--color-border);
  border-radius: 3px;
  background: transparent;
  cursor: pointer;
  font-size: 11px;
}

.ss-find-btn:hover {
  background: var(--color-mist);
}

.ss-find-close {
  background: none;
  border: none;
  cursor: pointer;
  font-size: 14px;
  color: var(--color-text-secondary);
  padding: 2px;
}

/* Sheet tab bar */
.ss-sheet-tabs {
  display: flex;
  align-items: center;
  gap: 0;
  background: var(--color-mist);
  border-top: 1px solid var(--color-border);
  padding: 0 4px;
  height: 28px;
  flex-shrink: 0;
  overflow-x: auto;
}

.ss-sheet-tab {
  padding: 4px 12px;
  border: 1px solid var(--color-border);
  border-bottom: none;
  border-radius: 4px 4px 0 0;
  background: var(--color-surface);
  font-size: 12px;
  cursor: pointer;
  white-space: nowrap;
  color: var(--color-text-secondary);
}

.ss-sheet-tab.active {
  background: var(--color-surface);
  color: var(--color-text);
  font-weight: 600;
  border-bottom: 2px solid var(--color-surface);
  margin-bottom: -1px;
}

.ss-sheet-tab:hover:not(.active) {
  background: var(--color-bg);
}

.ss-sheet-add {
  font-size: 14px;
  font-weight: 700;
  padding: 4px 10px;
  color: var(--color-text-secondary);
}

/* Charts area */
.ss-charts-area {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  padding: 12px;
  border-top: 1px solid var(--color-border);
  background: var(--color-bg);
  flex-shrink: 0;
}

.ss-chart {
  position: relative;
  display: inline-block;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  padding: 8px;
}

.ss-chart-inner svg {
  display: block;
}

.ss-chart-remove {
  position: absolute;
  top: 4px;
  right: 4px;
  background: none;
  border: none;
  cursor: pointer;
  font-size: 14px;
  color: var(--color-text-secondary);
  opacity: 0;
  transition: opacity 0.15s;
}

.ss-chart:hover .ss-chart-remove {
  opacity: 1;
}

.ss-chart-remove:hover {
  color: var(--color-text);
}

.spreadsheet-empty {
  padding: 32px;
  text-align: center;
  color: var(--color-text-secondary);
}