/* ============================================
   VizFlow — Style System
   ============================================ */
/* === CSS Variables (Theme System) === */
:root, [data-theme="light"] {
    --bg-primary: #fafbfc;
    --bg-secondary: #f3f4f6;
    --bg-tertiary: #e5e7eb;
    --bg-hover: #eef0f3;
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    --border-color: #e2e8f0;
    --border-focus: #3b6ea5;
    --accent: #1e3a5f;
    --accent-hover: #162d4a;
    --accent-light: #edf2f8;
    --accent-muted: #3b6ea5;
    --success: #059669;
    --warning: #d97706;
    --danger: #dc2626;
    --shadow-sm: 0 1px 2px rgba(15,23,42,0.04), 0 1px 3px rgba(15,23,42,0.06);
    --shadow-md: 0 2px 4px rgba(15,23,42,0.04), 0 6px 16px rgba(15,23,42,0.08);
    --shadow-lg: 0 4px 8px rgba(15,23,42,0.04), 0 12px 32px rgba(15,23,42,0.1);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --transition: 0.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

[data-theme="dark"] {
    --bg-primary: #0f1419;
    --bg-secondary: #171d24;
    --bg-tertiary: #1f2730;
    --bg-hover: #1a2229;
    --text-primary: #e2e8f0;
    --text-secondary: #8899aa;
    --text-muted: #5c6f80;
    --border-color: #2a3440;
    --border-focus: #6fa3e0;
    --accent: #6fa3e0;
    --accent-hover: #8db8ea;
    --accent-light: #1a2a3d;
    --accent-muted: #4a7db5;
    --success: #34d399;
    --warning: #fbbf24;
    --danger: #f87171;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.4);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.45);
    --shadow-lg: 0 8px 28px rgba(0,0,0,0.55);
}

/* === Reset & Base === */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    transition: background var(--transition), color var(--transition);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* === Header === */
.header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.625rem 1.5rem;
    background: rgba(250,251,252,0.85);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(20px) saturate(1.2);
    -webkit-backdrop-filter: blur(20px) saturate(1.2);
}

.header-left {
    display: flex;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.25rem;
    font-weight: 700;
}

.logo-icon {
    font-size: 1.5rem;
}

.logo-text {
    color: var(--accent);
    letter-spacing: -0.02em;
}

.header-center {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
}

.tagline {
    color: var(--text-muted);
    font-size: 0.8125rem;
    font-weight: 500;
    letter-spacing: 0.01em;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

[data-theme="dark"] .header {
    background: rgba(15,20,25,0.88);
}

/* === Buttons === */
.btn-primary {
    padding: 0.5rem 1.25rem;
    background: var(--accent);
    color: white;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 0.8125rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
    letter-spacing: 0.01em;
}

.btn-primary:hover {
    background: var(--accent-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-secondary {
    padding: 0.4rem 0.875rem;
    background: var(--bg-primary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 0.8125rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition);
}

.btn-secondary:hover {
    background: var(--bg-hover);
    border-color: var(--accent);
}

.btn-icon {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 1rem;
    transition: all var(--transition);
}

.btn-icon:hover {
    background: var(--bg-tertiary);
    border-color: var(--accent);
}

.btn-icon:disabled {
    opacity: 0.35;
    cursor: not-allowed;
    background: transparent;
    border-color: var(--border-color);
}

.btn-icon:disabled:hover {
    background: transparent;
    border-color: var(--border-color);
    transform: none;
    box-shadow: none;
}

.controls-divider {
    width: 1px;
    height: 24px;
    background: var(--border-color);
    margin: 0 0.25rem;
}

/* === Main Content === */
.main {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: 2rem;
    max-width: 1400px;
    width: 100%;
    margin: 0 auto;
}

/* === Upload Panel === */
.upload-panel {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2rem;
    padding: 2rem 0;
}

.upload-area {
    width: 100%;
    max-width: 640px;
    padding: 3rem 2rem;
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-lg);
    text-align: center;
    cursor: pointer;
    transition: all var(--transition);
    background: var(--bg-secondary);
}

.upload-area:hover, .upload-area.drag-over {
    border-color: var(--accent);
    background: var(--accent-light);
}

.upload-area.drag-over {
    transform: scale(1.02);
    box-shadow: var(--shadow-lg);
}

.upload-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.upload-area h2 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

.upload-area p {
    color: var(--text-secondary);
}

.upload-link {
    color: var(--accent);
    cursor: pointer;
    text-decoration: underline;
}

.upload-link:hover {
    color: var(--accent-hover);
}

.upload-examples {
    margin-top: 1.5rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

.upload-examples p {
    font-size: 0.8125rem;
    color: var(--text-muted);
}

/* === Paste Area === */
.paste-area {
    width: 100%;
    max-width: 640px;
}

.paste-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.paste-area textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: 'SF Mono', Monaco, 'Cascadia Code', monospace;
    font-size: 0.8125rem;
    line-height: 1.5;
    resize: vertical;
    transition: border-color var(--transition);
}

.paste-area textarea:focus {
    outline: none;
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px rgba(30, 58, 95, 0.12);
}

.paste-area textarea::placeholder {
    color: var(--text-muted);
    font-size: 0.75rem;
}

.paste-area .btn-primary {
    margin-top: 0.75rem;
}

/* === Sample Data === */
.sample-data {
    text-align: center;
}

.sample-data p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
}

.sample-buttons {
    display: flex;
    gap: 0.5rem;
    justify-content: center;
    flex-wrap: wrap;
}

.btn-sample {
    padding: 0.5rem 1rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 0.8125rem;
    cursor: pointer;
    transition: all var(--transition);
}

.btn-sample:hover {
    background: var(--accent-light);
    border-color: var(--accent);
    transform: translateY(-1px);
}

/* === Chart Panel === */
.chart-panel {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* === Controls Bar === */
.controls-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.625rem 0.875rem;
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    flex-wrap: wrap;
    gap: 0.75rem;
}

.controls-left, .controls-center, .controls-right {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.controls-center {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.select-control {
    padding: 0.375rem 0.625rem;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.8125rem;
    cursor: pointer;
    transition: border-color var(--transition);
    font-family: inherit;
}

.select-control:focus {
    outline: none;
    border-color: var(--border-focus);
}

.control-label {
    font-size: 0.8125rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 0.35rem;
}

/* === Multi-Select Dropdown === */
.multi-select-wrapper {
    position: relative;
}

.multi-select-toggle {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.4rem 0.75rem;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.8125rem;
    cursor: pointer;
    transition: border-color var(--transition);
    min-width: 160px;
    max-width: 250px;
}

.multi-select-toggle:hover {
    border-color: var(--accent);
}

.multi-select-toggle:focus {
    outline: none;
    border-color: var(--border-focus);
}

.multi-select-label {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    flex: 1;
    text-align: left;
}

.multi-select-arrow {
    font-size: 0.625rem;
    transition: transform 0.2s ease;
    flex-shrink: 0;
}

.multi-select-wrapper.open .multi-select-arrow {
    transform: rotate(180deg);
}

.multi-select-dropdown {
    position: absolute;
    top: calc(100% + 4px);
    left: 0;
    min-width: 100%;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-md);
    z-index: 1000;
    display: none;
    max-height: 250px;
    overflow-y: auto;
}

.multi-select-wrapper.open .multi-select-dropdown {
    display: block;
    animation: dropdownFade 0.15s ease;
}

@keyframes dropdownFade {
    from { opacity: 0; transform: translateY(-4px); }
    to { opacity: 1; transform: translateY(0); }
}

.multi-select-options {
    padding: 0.25rem 0;
}

.multi-select-option {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0.75rem;
    cursor: pointer;
    transition: background var(--transition);
    font-size: 0.8125rem;
    user-select: none;
}

.multi-select-option:hover {
    background: var(--bg-hover);
}

.multi-select-option input[type="checkbox"] {
    accent-color: var(--accent);
    cursor: pointer;
    width: 15px;
    height: 15px;
}

.multi-select-option .option-label {
    flex: 1;
    color: var(--text-primary);
}

.multi-select-option .option-badge {
    font-size: 0.6875rem;
    padding: 0.125rem 0.375rem;
    border-radius: 3px;
    font-weight: 600;
    text-transform: uppercase;
}

.multi-select-option .option-badge.number {
    background: rgba(30, 58, 95, 0.12);
    color: var(--accent);
}

.multi-select-option .option-badge.string {
    background: rgba(64, 192, 87, 0.15);
    color: var(--success);
}

.multi-select-option .option-badge.date {
    background: rgba(250, 176, 5, 0.15);
    color: var(--warning);
}

.multi-select-option.selected {
    background: var(--accent-light);
}

/* === Back / New Data Button === */
#back-btn.btn-icon {
    width: auto;
    height: auto;
    padding: 0.4rem 0.85rem;
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--text-primary);
    white-space: nowrap;
    gap: 0.35rem;
}

#back-btn.btn-icon:hover {
    background: var(--bg-tertiary);
    border-color: var(--accent);
    color: var(--text-primary);
}

/* === Chart Container === */
.chart-container {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    position: relative;
    min-height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-sm);
}

.chart-container canvas {
    max-height: 500px;
    width: 100% !important;
    /* Smooth transition for chart type changes */
    transition: opacity 0.2s ease, transform 0.2s ease;
}

/* Applied during chart type transitions — fade out canvas */
.chart-container.chart-transitioning canvas {
    opacity: 0;
    transform: scale(0.98);
}

/* Loading spinner overlay */
.chart-container .chart-loading {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-primary);
    border-radius: var(--radius-md);
    z-index: 10;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease;
}

.chart-container.chart-transitioning .chart-loading {
    opacity: 1;
    pointer-events: auto;
}

.chart-loading-spinner {
    width: 32px;
    height: 32px;
    border: 3px solid var(--border-color);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* === Data Table === */
.data-table-section {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.table-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1rem;
    background: var(--bg-secondary);
    cursor: pointer;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.table-header-left {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.table-header-right {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.table-header h3 {
    font-size: 0.875rem;
    font-weight: 600;
}

.table-header .btn-icon {
    border: none;
    width: auto;
    height: auto;
    font-size: 0.75rem;
}

/* Row counter badge */
.table-row-count {
    font-size: 0.75rem;
    color: var(--text-muted);
    background: var(--bg-tertiary);
    padding: 0.125rem 0.5rem;
    border-radius: 10px;
    font-weight: 500;
    white-space: nowrap;
}

/* Filter input */
.table-filter-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.table-filter-input {
    padding: 0.35rem 1.75rem 0.35rem 0.6rem;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.8125rem;
    width: 160px;
    transition: all var(--transition);
}

.table-filter-input:focus {
    outline: none;
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px rgba(30, 58, 95, 0.1);
    width: 200px;
}

.table-filter-input::placeholder {
    color: var(--text-muted);
}

.clear-filter-btn {
    position: absolute;
    right: 4px;
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 0.6875rem;
    padding: 0.2rem;
    border-radius: 3px;
    line-height: 1;
    display: none;
    transition: all var(--transition);
}

.table-filter-input:not(:placeholder-shown) ~ .clear-filter-btn {
    display: block;
}

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

/* Sortable table headers */
.data-table th {
    padding: 0.5rem 1rem;
    background: var(--bg-tertiary);
    text-align: left;
    font-weight: 600;
    position: sticky;
    top: 0;
    border-bottom: 2px solid var(--border-color);
    cursor: pointer;
    user-select: none;
    transition: background var(--transition);
    white-space: nowrap;
}

.data-table th:hover {
    background: var(--bg-hover);
}

.sort-icon {
    font-size: 0.625rem;
    opacity: 0.3;
    margin-left: 0.25rem;
    transition: opacity var(--transition);
}

.data-table th:hover .sort-icon {
    opacity: 0.7;
}

.data-table th.sorted-asc,
.data-table th.sorted-desc {
    background: var(--accent-light);
    border-bottom-color: var(--accent);
}

.data-table th.sorted-asc .sort-icon,
.data-table th.sorted-desc .sort-icon {
    opacity: 1;
    color: var(--accent);
}

/* Overflow message */
.table-overflow-msg {
    padding: 0.4rem 1rem;
    font-size: 0.75rem;
    color: var(--text-muted);
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    text-align: center;
}

/* No results message */
.data-table tbody:empty::after {
    content: 'No matching rows found';
    display: block;
    text-align: center;
    padding: 1.5rem 1rem;
    color: var(--text-muted);
    font-size: 0.8125rem;
    font-style: italic;
}

.data-table-wrapper {
    max-height: 300px;
    overflow: auto;
    transition: max-height 0.3s ease;
}

.data-table-wrapper.collapsed {
    max-height: 0;
    overflow: hidden;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.8125rem;
}

.data-table th {
    padding: 0.5rem 1rem;
    background: var(--bg-tertiary);
    text-align: left;
    font-weight: 600;
    position: sticky;
    top: 0;
    border-bottom: 2px solid var(--border-color);
}

.data-table td {
    padding: 0.4rem 1rem;
    border-bottom: 1px solid var(--border-color);
    white-space: nowrap;
}

.data-table tr:hover td {
    background: var(--bg-hover);
}

/* === Recommendation Banner === */
.recommendation-banner {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    background: var(--accent-light);
    border: 1px solid var(--accent);
    border-radius: var(--radius-md);
    font-size: 0.8125rem;
    animation: slideIn 0.3s ease;
    flex-wrap: wrap;
}

@keyframes slideIn {
    from { opacity: 0; transform: translateY(-8px); }
    to { opacity: 1; transform: translateY(0); }
}

.recommendation-icon {
    font-size: 1.1rem;
    flex-shrink: 0;
}

.recommendation-text {
    color: var(--text-primary);
    flex: 1;
    min-width: 180px;
    line-height: 1.5;
}

.recommendation-options {
    display: flex;
    gap: 0.35rem;
    align-items: center;
    flex-wrap: wrap;
}

.recommendation-options .rec-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-right: 0.25rem;
}

.recommendation-options .rec-badge {
    padding: 0.25rem 0.6rem;
    background: var(--accent);
    color: white;
    border: none;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
    white-space: nowrap;
}

.recommendation-options .rec-badge:hover {
    background: var(--accent-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

.recommendation-options .rec-badge.active {
    background: var(--accent-hover);
    box-shadow: 0 0 0 2px var(--accent);
}

.recommendation-options .rec-badge.alt {
    background: transparent;
    color: var(--accent);
    border: 1px solid var(--accent);
}

.recommendation-options .rec-badge.alt:hover {
    background: var(--accent);
    color: white;
}

.recommendation-dismiss {
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 1rem;
    padding: 0.25rem;
    border-radius: 4px;
    transition: all var(--transition);
    flex-shrink: 0;
    line-height: 1;
}

.recommendation-dismiss:hover {
    color: var(--text-primary);
    background: var(--bg-hover);
}

/* === Footer === */
.footer {
    text-align: center;
    padding: 1.5rem;
    border-top: 1px solid var(--border-color);
    font-size: 0.8125rem;
    color: var(--text-muted);
}

.footer a {
    color: var(--accent);
    text-decoration: none;
}

.footer a:hover {
    text-decoration: underline;
}

/* Analytics toggle in footer */
.footer-analytics-link {
    cursor: pointer;
    user-select: none;
    transition: opacity 0.2s ease;
}

.footer-analytics-link:hover {
    opacity: 0.8;
}

/* === Toast Notifications === */
.toast-container {
    position: fixed;
    bottom: 1.5rem;
    right: 1.5rem;
    z-index: 10000;
    display: flex;
    flex-direction: column-reverse;
    gap: 0.5rem;
    max-width: 420px;
    width: calc(100% - 3rem);
}

.toast {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    padding: 0.75rem 1rem;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    font-size: 0.8125rem;
    color: var(--text-primary);
    opacity: 0;
    transform: translateX(100%) scale(0.95);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    pointer-events: none;
}

.toast-visible {
    opacity: 1;
    transform: translateX(0) scale(1);
    pointer-events: auto;
}

.toast-dismissing {
    opacity: 0;
    transform: translateX(100%) scale(0.95);
}

.toast-icon {
    flex-shrink: 0;
    font-size: 1rem;
}

.toast-message {
    flex: 1;
    line-height: 1.4;
}

.toast-close {
    flex-shrink: 0;
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 0.75rem;
    padding: 0.25rem;
    border-radius: 4px;
    transition: all var(--transition);
    line-height: 1;
}

.toast-close:hover {
    color: var(--text-primary);
    background: var(--bg-hover);
}

/* Toast type borders */
.toast-info {
    border-left: 3px solid var(--accent);
}

.toast-success {
    border-left: 3px solid var(--success);
}

.toast-warning {
    border-left: 3px solid var(--warning);
}

.toast-error {
    border-left: 3px solid var(--danger);
}

/* === Loading Overlay (for data import) === */
.loading-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease;
    backdrop-filter: blur(2px);
}

.loading-overlay.active {
    opacity: 1;
    pointer-events: auto;
}

.loading-card {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2rem 2.5rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    box-shadow: var(--shadow-lg);
    transform: scale(0.9);
    transition: transform 0.2s ease;
}

.loading-overlay.active .loading-card {
    transform: scale(1);
}

.loading-spinner-large {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-color);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.loading-text {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* === Error State Inline === */
.error-inline {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    background: rgba(250, 82, 82, 0.08);
    border: 1px solid var(--danger);
    border-radius: var(--radius-md);
    color: var(--danger);
    font-size: 0.8125rem;
    animation: slideIn 0.3s ease;
}

[data-theme="dark"] .error-inline {
    background: rgba(255, 107, 107, 0.1);
}

.bubble-size-wrapper {
    display: none;
}

.bubble-size-wrapper.visible {
    display: flex;
    align-items: center;
    gap: 0.35rem;
}

.bubble-size-wrapper .select-control {
    min-width: 100px;
}

.bubble-size-note {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-style: italic;
}

/* === Axis Label Edit === */
.axis-label-wrapper {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    margin-left: 0.25rem;
}

.axis-label-edit-icon {
    opacity: 0;
    cursor: pointer;
    font-size: 0.6875rem;
    padding: 0.125rem 0.2rem;
    border-radius: 3px;
    transition: all var(--transition);
    background: transparent;
    border: none;
    color: var(--text-muted);
    line-height: 1;
    width: auto;
    height: auto;
}

.control-label:hover .axis-label-edit-icon,
.axis-label-wrapper:hover .axis-label-edit-icon {
    opacity: 0.6;
}

.axis-label-edit-icon:hover {
    opacity: 1 !important;
    background: var(--accent-light);
    color: var(--accent);
}

.axis-label-display {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    cursor: pointer;
    padding: 0.15rem 0.35rem;
    border-radius: var(--radius-sm);
    transition: all var(--transition);
}

.axis-label-display:hover {
    background: var(--bg-hover);
}

.axis-label-text {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--accent);
    max-width: 120px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.axis-label-edit {
    display: none;
    align-items: center;
    gap: 0.25rem;
}

.axis-label-input {
    padding: 0.2rem 0.5rem;
    font-size: 0.75rem;
    font-weight: 500;
    font-family: inherit;
    background: var(--bg-primary);
    border: 2px solid var(--accent);
    border-radius: 3px;
    color: var(--text-primary);
    outline: none;
    width: 120px;
    box-shadow: 0 0 0 3px rgba(30, 58, 95, 0.12);
}

.axis-label-input:focus {
    border-color: var(--accent-hover);
}

.axis-label-save,
.axis-label-cancel,
.axis-label-reset {
    width: 24px;
    height: 24px;
    font-size: 0.6875rem;
}

.axis-label-save {
    color: var(--success);
    border-color: var(--success);
}

.axis-label-save:hover {
    background: rgba(64, 192, 87, 0.1);
}

.axis-label-cancel {
    color: var(--text-muted);
}

.axis-label-reset {
    color: var(--warning);
    border-color: var(--warning);
}

.axis-label-reset:hover {
    background: rgba(250, 176, 5, 0.1);
}

/* === Column Rename Inline Edit === */
.th-content {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.th-content .col-name {
    flex: 1;
}

.rename-icon {
    opacity: 0;
    cursor: pointer;
    font-size: 0.6875rem;
    padding: 0.125rem 0.2rem;
    border-radius: 3px;
    transition: all var(--transition);
    flex-shrink: 0;
    background: transparent;
    border: none;
    color: var(--text-muted);
    line-height: 1;
}

.data-table th:hover .rename-icon {
    opacity: 0.6;
}

.rename-icon:hover {
    opacity: 1 !important;
    background: var(--accent-light);
    color: var(--accent);
}

.rename-input {
    padding: 0.15rem 0.35rem;
    font-size: 0.8125rem;
    font-weight: 600;
    font-family: inherit;
    background: var(--bg-primary);
    border: 2px solid var(--accent);
    border-radius: 3px;
    color: var(--text-primary);
    outline: none;
    width: 100%;
    min-width: 60px;
    box-shadow: 0 0 0 3px rgba(30, 58, 95, 0.12);
}

.rename-input:focus {
    border-color: var(--accent);
}

.rename-hint {
    font-size: 0.625rem;
    color: var(--text-muted);
    opacity: 0;
    transition: opacity var(--transition);
    pointer-events: none;
}

.data-table th:hover .rename-hint {
    opacity: 0.5;
}

/* Override sort-icon visibility during rename */
.data-table th.renaming .sort-icon {
    display: none;
}

/* === Chart Title Bar === */
.chart-title-bar {
    text-align: center;
    padding: 0.5rem 0;
}

.chart-title-display {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    padding: 0.35rem 0.75rem;
    border-radius: var(--radius-sm);
    transition: all var(--transition);
}

.chart-title-display:hover {
    background: var(--bg-hover);
}

.chart-title-text {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.01em;
    line-height: 1.4;
    max-width: 600px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.chart-title-edit-icon {
    opacity: 0;
    cursor: pointer;
    font-size: 0.75rem;
    padding: 0.2rem 0.3rem;
    border-radius: 3px;
    transition: all var(--transition);
    background: transparent;
    border: none;
    color: var(--text-muted);
    line-height: 1;
}

.chart-title-display:hover .chart-title-edit-icon {
    opacity: 0.6;
}

.chart-title-edit-icon:hover {
    opacity: 1 !important;
    background: var(--accent-light);
    color: var(--accent);
}

.chart-title-edit {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
}

.chart-title-input {
    padding: 0.4rem 0.75rem;
    font-size: 1.1rem;
    font-weight: 600;
    font-family: inherit;
    background: var(--bg-primary);
    border: 2px solid var(--accent);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    outline: none;
    min-width: 250px;
    max-width: 500px;
    box-shadow: 0 0 0 3px rgba(30, 58, 95, 0.12);
    transition: border-color var(--transition);
}

.chart-title-input:focus {
    border-color: var(--accent-hover);
}

.chart-title-save,
.chart-title-cancel,
.chart-title-reset {
    width: 32px;
    height: 32px;
    font-size: 0.875rem;
}

.chart-title-save {
    color: var(--success);
    border-color: var(--success);
}

.chart-title-save:hover {
    background: rgba(64, 192, 87, 0.1);
}

.chart-title-cancel {
    color: var(--text-muted);
}

.chart-title-reset {
    color: var(--warning);
    border-color: var(--warning);
}

.chart-title-reset:hover {
    background: rgba(250, 176, 5, 0.1);
}

/* === Transform Panel === */
.transform-toggle-bar {
    display: flex;
    align-items: center;
    padding: 0.25rem 0;
}

.transform-toggle-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8125rem;
    font-weight: 500;
    position: relative;
}

.transform-toggle-btn.active {
    border-color: var(--accent);
    background: var(--accent-light);
    color: var(--accent);
}

.transform-badge {
    font-size: 0.6875rem;
    font-weight: 700;
    background: var(--accent);
    color: white;
    padding: 0.05rem 0.4rem;
    border-radius: 10px;
    min-width: 18px;
    text-align: center;
    line-height: 1.4;
}

.transform-panel {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
    animation: slideIn 0.2s ease;
}

.transform-tabs {
    display: flex;
    align-items: center;
    gap: 0;
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-tertiary);
    overflow-x: auto;
}

.transform-tab {
    padding: 0.6rem 1rem;
    font-size: 0.8125rem;
    font-weight: 500;
    background: transparent;
    border: none;
    border-bottom: 2px solid transparent;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition);
    white-space: nowrap;
}

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

.transform-tab.active {
    color: var(--accent);
    border-bottom-color: var(--accent);
    background: var(--bg-primary);
}

.transform-tab-actions {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.35rem 0.75rem;
}

.transform-reset-btn {
    font-size: 1rem;
    width: 30px;
    height: 30px;
    color: var(--warning);
    border-color: var(--warning);
}

.transform-reset-btn:hover {
    background: rgba(250, 176, 5, 0.1);
}

.transform-apply-btn {
    padding: 0.35rem 1rem;
    font-size: 0.8125rem;
}

.transform-tab-content {
    display: none;
    padding: 1rem;
}

.transform-tab-content.active {
    display: block;
}

/* Sort and Filter rows */
.transform-sort-row,
.transform-filter-row {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.4rem 0;
    flex-wrap: wrap;
}

.transform-sort-row .select-control,
.transform-filter-row .select-control,
.transform-filter-row .filter-value-input {
    font-size: 0.8125rem;
    padding: 0.35rem 0.6rem;
}

.filter-value-input {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.8125rem;
    min-width: 120px;
    flex: 1;
    max-width: 200px;
    transition: border-color var(--transition);
}

.filter-value-input:focus {
    outline: none;
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px rgba(30, 58, 95, 0.1);
}

.transform-row-remove {
    width: 26px;
    height: 26px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    cursor: pointer;
    color: var(--text-muted);
    font-size: 0.75rem;
    transition: all var(--transition);
    flex-shrink: 0;
}

.transform-row-remove:hover {
    background: rgba(250, 82, 82, 0.1);
    border-color: var(--danger);
    color: var(--danger);
}

.transform-add-btn {
    margin-top: 0.5rem;
    font-size: 0.8125rem;
    padding: 0.35rem 0.75rem;
}

/* Aggregate config */
.transform-row {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.4rem 0;
    flex-wrap: wrap;
}

.transform-label {
    font-size: 0.8125rem;
    color: var(--text-secondary);
    min-width: 90px;
    font-weight: 500;
}

.transform-hint {
    font-size: 0.8125rem;
    color: var(--text-muted);
    margin: 0.25rem 0 0.5rem;
}

.transform-agg-funcs {
    margin-top: 0.5rem;
}

.agg-func-row {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.35rem 0;
}

.agg-func-label {
    font-size: 0.8125rem;
    color: var(--text-primary);
    min-width: 140px;
    font-weight: 500;
}

.agg-func-select {
    padding: 0.3rem 0.6rem;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.8125rem;
    cursor: pointer;
}

.agg-func-select:focus {
    outline: none;
    border-color: var(--border-focus);
}

.agg-func-badge {
    font-size: 0.6875rem;
    padding: 0.1rem 0.35rem;
    border-radius: 3px;
    font-weight: 600;
    text-transform: uppercase;
    background: rgba(30, 58, 95, 0.12);
    color: var(--accent);
}

/* Active transform indicator */
.transform-status {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    font-size: 0.75rem;
    color: var(--accent);
    padding: 0.25rem 0.5rem;
    background: var(--accent-light);
    border-radius: var(--radius-sm);
    font-weight: 500;
}

/* Empty state messages */
.transform-empty-msg {
    text-align: center;
    padding: 1rem;
    color: var(--text-muted);
    font-size: 0.8125rem;
    font-style: italic;
}

/* Enable checkbox */
.transform-enable-cb {
    accent-color: var(--accent);
    width: 16px;
    height: 16px;
    cursor: pointer;
    vertical-align: middle;
    margin-right: 0.25rem;
}

/* === Color Picker Panel === */
.color-picker-wrapper {
    position: relative;
}

.color-picker-dropdown {
    position: absolute;
    top: calc(100% + 6px);
    right: 0;
    width: 320px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    z-index: 1000;
    display: none;
    max-height: 480px;
    overflow-y: auto;
    animation: dropdownFade 0.15s ease;
}

.color-picker-wrapper.open .color-picker-dropdown {
    display: block;
}

.color-picker-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--border-color);
}

.color-picker-title {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
}

.color-picker-section {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--border-color);
}

.color-picker-section:last-of-type {
    border-bottom: none;
}

.color-picker-section-label {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin-bottom: 0.5rem;
}

/* Palette grid — show each built-in palette as a row of color dots */
.palette-grid {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.palette-row {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.35rem 0.5rem;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition);
    border: 2px solid transparent;
}

.palette-row:hover {
    background: var(--bg-hover);
}

.palette-row.active {
    border-color: var(--accent);
    background: var(--accent-light);
}

.palette-row-name {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-secondary);
    min-width: 50px;
    text-transform: capitalize;
}

.palette-row-colors {
    display: flex;
    gap: 2px;
    flex: 1;
}

.palette-dot {
    width: 16px;
    height: 16px;
    border-radius: 3px;
    flex-shrink: 0;
    border: 1px solid rgba(0,0,0,0.1);
}

/* Per-series color inputs */
.series-colors {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.series-color-row {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.25rem 0;
}

.series-color-swatch {
    width: 20px;
    height: 20px;
    border-radius: 4px;
    border: 2px solid var(--border-color);
    cursor: pointer;
    transition: all var(--transition);
    flex-shrink: 0;
    position: relative;
    overflow: hidden;
}

.series-color-swatch:hover {
    border-color: var(--accent);
    transform: scale(1.1);
}

.series-color-swatch input[type="color"] {
    position: absolute;
    inset: -4px;
    width: calc(100% + 8px);
    height: calc(100% + 8px);
    border: none;
    padding: 0;
    cursor: pointer;
    opacity: 0;
}

.series-color-label {
    font-size: 0.8125rem;
    color: var(--text-primary);
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.series-color-hex {
    font-size: 0.6875rem;
    color: var(--text-muted);
    font-family: 'SF Mono', Monaco, monospace;
    min-width: 55px;
    text-align: right;
}

/* Saved themes list */
.saved-themes {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    max-height: 120px;
    overflow-y: auto;
    margin-bottom: 0.5rem;
}

.saved-themes-empty {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-style: italic;
    padding: 0.25rem 0;
}

.saved-theme-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.35rem 0.5rem;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition);
    border: 1px solid transparent;
}

.saved-theme-item:hover {
    background: var(--bg-hover);
    border-color: var(--border-color);
}

.saved-theme-item.active {
    border-color: var(--accent);
    background: var(--accent-light);
}

.saved-theme-name {
    font-size: 0.8125rem;
    color: var(--text-primary);
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.saved-theme-colors {
    display: flex;
    gap: 2px;
}

.saved-theme-dot {
    width: 12px;
    height: 12px;
    border-radius: 2px;
    border: 1px solid rgba(0,0,0,0.1);
}

.saved-theme-delete {
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 0.625rem;
    border-radius: 3px;
    transition: all var(--transition);
    flex-shrink: 0;
    opacity: 0;
}

.saved-theme-item:hover .saved-theme-delete {
    opacity: 1;
}

.saved-theme-delete:hover {
    color: var(--danger);
    background: rgba(250, 82, 82, 0.1);
}

/* Save theme row */
.save-theme-row {
    display: flex;
    gap: 0.35rem;
    align-items: center;
}

.theme-name-input {
    flex: 1;
    padding: 0.35rem 0.6rem;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.8125rem;
    transition: border-color var(--transition);
}

.theme-name-input:focus {
    outline: none;
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px rgba(30, 58, 95, 0.1);
}

.theme-name-input::placeholder {
    color: var(--text-muted);
}

.save-theme-btn {
    padding: 0.35rem 0.75rem;
    font-size: 0.8125rem;
    white-space: nowrap;
}

/* Color picker footer */
.color-picker-footer {
    padding: 0.5rem 1rem;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: center;
}

.reset-colors-btn {
    font-size: 0.75rem;
    padding: 0.3rem 0.75rem;
}

/* === Dashboard Mode === */
.dashboard-panel {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    animation: fadeIn 0.3s ease;
}

.dashboard-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1rem;
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    flex-wrap: wrap;
    gap: 0.75rem;
}

.dashboard-toolbar-left {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.dashboard-toolbar-center {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.dashboard-toolbar-right {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.dashboard-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
}

.template-btn {
    font-size: 0.75rem;
    padding: 0.3rem 0.65rem;
}

.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    min-height: 200px;
}

.dashboard-cell {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 0.75rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    transition: box-shadow var(--transition), border-color var(--transition);
    cursor: default;
}

.dashboard-cell:hover {
    border-color: var(--accent);
    box-shadow: var(--shadow-md);
}

.dashboard-cell-dragging {
    opacity: 0.5;
    border-style: dashed;
}

.dashboard-cell-dragover {
    border-color: var(--accent);
    box-shadow: 0 0 0 2px var(--accent);
    background: var(--accent-light);
}

.dashboard-cell-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
}

.dashboard-type-select {
    font-size: 0.75rem;
    padding: 0.25rem 0.5rem;
    min-width: 90px;
}

.dashboard-x-select {
    font-size: 0.75rem;
    padding: 0.25rem 0.5rem;
    min-width: 80px;
}

.dashboard-cell-actions {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.dashboard-action-btn {
    width: 26px;
    height: 26px;
    font-size: 0.75rem;
    border: none;
}

.dashboard-remove-btn:hover {
    color: var(--danger);
    background: rgba(250, 82, 82, 0.1);
}

.dashboard-y-group {
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem;
    padding: 0.25rem 0;
}

.dashboard-y-option {
    display: flex;
    align-items: center;
    gap: 0.2rem;
    font-size: 0.6875rem;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0.15rem 0.4rem;
    border-radius: var(--radius-sm);
    background: var(--bg-tertiary);
    transition: all var(--transition);
    user-select: none;
}

.dashboard-y-option:hover {
    background: var(--bg-hover);
}

.dashboard-y-option input[type="checkbox"] {
    accent-color: var(--accent);
    width: 12px;
    height: 12px;
    cursor: pointer;
}

.dashboard-cell-title {
    display: flex;
    align-items: center;
}

.dashboard-title-input {
    width: 100%;
    padding: 0.25rem 0.5rem;
    font-size: 0.75rem;
    font-weight: 500;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    transition: border-color var(--transition);
}

.dashboard-title-input:focus {
    outline: none;
    border-color: var(--border-focus);
    box-shadow: 0 0 0 2px rgba(30, 58, 95, 0.1);
}

.dashboard-title-input::placeholder {
    color: var(--text-muted);
    font-style: italic;
}

.dashboard-cell-chart {
    flex: 1;
    min-height: 250px;
    max-height: 400px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.dashboard-cell-chart canvas {
    width: 100% !important;
    height: 100% !important;
    max-height: 380px;
}

/* Dashboard empty state */
.dashboard-empty {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--text-muted);
}

.dashboard-empty-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.dashboard-empty h3 {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

/* Saved dashboards dropdown */
.dashboard-saved-panel {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    max-height: 300px;
    overflow-y: auto;
    padding: 0.5rem;
    animation: dropdownFade 0.15s ease;
}

.dashboard-saved-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.6rem 0.75rem;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: background var(--transition);
}

.dashboard-saved-item:hover {
    background: var(--bg-hover);
}

.dashboard-saved-name {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
    flex: 1;
}

.dashboard-saved-meta {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.dashboard-saved-delete {
    width: 22px;
    height: 22px;
    font-size: 0.625rem;
    border: none;
    opacity: 0;
    transition: opacity var(--transition);
}

.dashboard-saved-item:hover .dashboard-saved-delete {
    opacity: 1;
}

.dashboard-saved-delete:hover {
    color: var(--danger);
    background: rgba(250, 82, 82, 0.1);
}

/* === Responsive === */
@media (max-width: 768px) {
    .header-center { display: none; }
    .main { padding: 1rem; }
    .controls-bar { flex-direction: column; align-items: stretch; }
    .controls-center { flex-direction: column; gap: 0.5rem; }
    .upload-area { padding: 2rem 1rem; }
    .multi-select-toggle { min-width: 120px; }
    .recommendation-banner { flex-direction: column; align-items: flex-start; }
    .recommendation-options { width: 100%; }
    .table-header { flex-direction: column; align-items: stretch; }
    .table-header-left, .table-header-right { justify-content: space-between; }
    .color-picker-dropdown { width: calc(100vw - 2rem); right: -0.5rem; }
    .table-filter-input { width: 100%; }
    .table-filter-input:focus { width: 100%; }
    .chart-title-text { font-size: 1rem; max-width: 280px; }
    .chart-title-input { min-width: 180px; max-width: 100%; font-size: 0.95rem; }
    .chart-title-edit { flex-wrap: wrap; justify-content: center; }
    .transform-tabs { flex-wrap: wrap; }
    .transform-tab { padding: 0.5rem 0.75rem; font-size: 0.75rem; }
    .transform-sort-row, .transform-filter-row { flex-direction: column; align-items: stretch; }
    .transform-sort-row .select-control, .transform-filter-row .select-control { width: 100%; }
    .filter-value-input { max-width: 100%; }
    .transform-row { flex-direction: column; align-items: stretch; }
    .transform-label { min-width: auto; }
    .axis-label-edit-icon { opacity: 0.5; }
    .axis-label-wrapper { margin-left: 0.125rem; }
    .axis-label-input { width: 90px; }
    .dashboard-toolbar { flex-direction: column; align-items: stretch; }
    .dashboard-toolbar-left, .dashboard-toolbar-center, .dashboard-toolbar-right { justify-content: center; flex-wrap: wrap; }
    .dashboard-grid { grid-template-columns: 1fr !important; }
    .dashboard-cell-chart { min-height: 200px; }
}

/* === PWA Install Button === */
.pwa-install-btn {
    font-size: 0.8rem;
    padding: 0.3rem 0.75rem;
    white-space: nowrap;
}

@keyframes pwa-pulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(30, 58, 95, 0.3); }
    50% { box-shadow: 0 0 0 6px rgba(30, 58, 95, 0); }
}

/* In standalone mode, hide install button */
@media (display-mode: standalone) {
    .pwa-install-btn { display: none !important; }
}