/* Spreadsheet Styles */

.spreadsheet-toolbar {
    position: sticky;
    top: 64px;
    background-color: var(--header-bg);
    border-bottom: 1px solid var(--border-color);
    padding: 12px 24px;
    display: flex;
    align-items: center;
    gap: 16px;
    z-index: 100;
    flex-wrap: wrap;
}

.toolbar-section {
    display: flex;
    align-items: center;
    gap: 8px;
}

.toolbar-section:last-child {
    margin-left: auto;
}

.document-title {
    font-size: 16px;
    font-weight: 600;
    border: none;
    background: transparent;
    color: var(--text-primary);
    padding: 8px 12px;
    border-radius: 6px;
    min-width: 200px;
}

.document-title:hover {
    background-color: var(--bg-hover);
}

.document-title:focus {
    background-color: var(--bg-hover);
    outline: 2px solid var(--color-teal);
}

.toolbar-btn {
    width: 36px;
    height: 36px;
    border: none;
    background: transparent;
    border-radius: 6px;
    cursor: pointer;
    color: var(--text-secondary);
    font-size: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.toolbar-btn:hover {
    background-color: var(--bg-hover);
    color: var(--text-primary);
}

.toolbar-btn:active {
    background-color: var(--bg-active);
}

.toolbar-select {
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-size: 14px;
    cursor: pointer;
}

.toolbar-select:hover {
    background-color: var(--bg-hover);
}

.toolbar-divider {
    width: 1px;
    height: 24px;
    background-color: var(--border-color);
    margin: 0 4px;
}

.toolbar-input {
    padding: 6px 10px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-size: 14px;
}

.collaboration-indicators {
    display: flex;
    align-items: center;
    gap: 4px;
    margin-right: 12px;
}

.collaborator-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 12px;
    font-weight: 600;
    border: 2px solid var(--bg-primary);
    margin-left: -8px;
    cursor: pointer;
}

.collaborator-avatar:first-child {
    margin-left: 0;
}

/* Formula Bar */
.formula-bar {
    position: sticky;
    top: 128px;
    background-color: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    padding: 8px 16px;
    display: flex;
    align-items: center;
    gap: 12px;
    z-index: 99;
}

.cell-reference {
    min-width: 60px;
    padding: 8px 12px;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-weight: 600;
    font-size: 14px;
    text-align: center;
}

.formula-input-wrapper {
    flex: 1;
    display: flex;
    align-items: center;
    gap: 8px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 0 12px;
    background-color: var(--bg-primary);
}

.formula-icon {
    color: var(--text-tertiary);
    font-size: 18px;
}

.formula-input {
    flex: 1;
    border: none;
    background: transparent;
    padding: 8px 0;
    font-size: 14px;
    color: var(--text-primary);
    outline: none;
}

/* Spreadsheet Container */
.spreadsheet-container {
    height: calc(100vh - 250px);
    display: flex;
    flex-direction: column;
}

.sheet-tabs {
    display: flex;
    gap: 4px;
    padding: 8px 16px;
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    overflow-x: auto;
}

.sheet-tab {
    padding: 8px 16px;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 6px 6px 0 0;
    cursor: pointer;
    font-size: 14px;
    white-space: nowrap;
    color: var(--text-secondary);
    transition: all 0.2s ease;
}

.sheet-tab:hover {
    background-color: var(--bg-hover);
    color: var(--text-primary);
}

.sheet-tab.active {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-weight: 500;
    border-bottom-color: var(--bg-primary);
}

.sheet-tab-add {
    width: 32px;
    height: 32px;
    border: none;
    background-color: var(--bg-tertiary);
    border-radius: 6px;
    cursor: pointer;
    color: var(--text-secondary);
    font-size: 18px;
}

.sheet-tab-add:hover {
    background-color: var(--bg-hover);
    color: var(--text-primary);
}

/* Spreadsheet Grid */
.spreadsheet-grid-wrapper {
    flex: 1;
    overflow: auto;
    background-color: var(--bg-secondary);
}

.spreadsheet-grid {
    display: inline-block;
    min-width: 100%;
}

.grid-row {
    display: flex;
}

.grid-cell {
    min-width: 100px;
    height: 32px;
    border-right: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
    padding: 6px 8px;
    background-color: var(--bg-primary);
    font-size: 13px;
    outline: none;
    overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis;
    color: var(--text-primary);
}

.grid-cell:focus {
    outline: 2px solid var(--color-teal);
    outline-offset: -2px;
    z-index: 10;
    position: relative;
}

.grid-cell.active {
    outline: 2px solid var(--color-teal);
    outline-offset: -2px;
}

.grid-cell.row-header,
.grid-cell.col-header {
    background-color: var(--bg-secondary);
    font-weight: 600;
    text-align: center;
    color: var(--text-secondary);
    user-select: none;
    cursor: pointer;
}

.grid-cell.row-header {
    min-width: 50px;
    position: sticky;
    left: 0;
    z-index: 2;
}

.grid-cell.col-header {
    position: sticky;
    top: 0;
    z-index: 1;
}

.grid-cell.row-header.col-header {
    z-index: 3;
}

.grid-cell:hover:not(.row-header):not(.col-header) {
    background-color: var(--bg-hover);
}

/* Selection Styling */
.grid-cell.selected {
    background-color: rgba(49, 216, 178, 0.1);
}

.grid-cell[data-ref="A1"] {
    /* First cell */
}

/* Context Menu */
.context-menu {
    position: fixed;
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    box-shadow: var(--shadow-lg);
    padding: 8px 0;
    min-width: 200px;
    z-index: 1000;
    display: none;
}

.context-menu.show {
    display: block;
}

.context-menu-item {
    padding: 10px 16px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--text-primary);
}

.context-menu-item:hover {
    background-color: var(--bg-hover);
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .spreadsheet-toolbar {
        padding: 8px 12px;
    }

    .toolbar-section {
        flex-wrap: wrap;
    }

    .grid-cell {
        min-width: 80px;
        font-size: 12px;
    }

    .formula-bar {
        flex-direction: column;
        align-items: stretch;
        gap: 8px;
    }
}