/* Match Density Heatmap Visualization Styles */

.match-density-heatmap-page {
    display: flex;
    flex-direction: column;
    height: 100%;
    background: var(--color-surface-primary);
    /* No padding-bottom: this is a flex-fill page (the heatmap/config fills the
       flex:1 container), and `.app-main` already reserves the fixed footer's
       height. Any padding here would leave a blank strip above the footer. */
    padding-bottom: 0;
}

/* Header info */
.heatmap-header-info {
    padding: 1rem 1.5rem;
    background: var(--color-sand-footer);
    border-bottom: 2px solid var(--color-primary);
    display: flex;
    align-items: center;
    gap: 1rem;
}

.heatmap-header-info .heatmap-title {
    font-family: var(--font-primary);
    font-size: 1.25rem;
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    margin: 0;
}

.heatmap-header-info .heatmap-author {
    font-family: var(--font-primary);
    font-size: 1rem;
    color: var(--color-text-secondary);
}

.heatmap-header-info .heatmap-subtitle {
    font-family: var(--font-primary);
    font-size: 1rem;
    color: var(--color-text-secondary);
    margin: 0.5rem 0 0 0;
}

/* No document selected state */
.heatmap-no-document {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    min-height: 400px;
    text-align: center;
    padding: 2rem;
    background: var(--color-gray-light);
}

.heatmap-no-document .no-document-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
}

.heatmap-no-document h3 {
    font-family: var(--font-primary);
    font-size: 1.5rem;
    color: var(--color-text-primary);
    margin: 0 0 0.5rem 0;
}

.heatmap-no-document p {
    font-family: var(--font-primary);
    font-size: 1rem;
    color: var(--color-text-secondary);
    margin: 0 0 1.5rem 0;
    max-width: 400px;
}

.heatmap-no-document .select-document-button {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background: var(--color-primary);
    color: var(--color-white);
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 1rem;
    font-weight: var(--font-weight-medium);
    font-family: var(--font-primary);
    transition: background 0.2s ease;
}

.heatmap-no-document .select-document-button:hover {
    background: var(--color-primary-dark);
}

/* Document selector section in settings modal */
.document-selector-section {
    background: var(--color-primary-light);
    padding: 1rem;
    border-radius: var(--radius-sm);
    margin-bottom: 1.5rem;
}

.document-selector-section .section-description {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    margin: 0.25rem 0 1rem 0;
}

.document-selector-section .document-search-wrapper {
    position: relative;
}

.document-selector-section .document-search-box {
    width: 100%;
    position: relative;
}

.document-selector-section .search-suggestions {
    z-index: 400;
}

/* Heatmap container */
.match-density-heatmap-container {
    flex: 1;
    position: relative;
    overflow: hidden;
}

/* The empty "اختر الكتاب" state hosts a search dropdown — the container
   must not clip it (no canvas is mounted there, so overflow is safe) */
.match-density-heatmap-container:has(.heatmap-no-document) {
    overflow: visible;
}

.heatmap-no-document .document-search-wrapper {
    position: relative;
    width: min(400px, 100%);
}

/* Above the page footer bar (--z-nav: 1000) so long lists stay readable */
.heatmap-no-document .search-suggestions {
    z-index: 1100;
}

.heatmap-canvas-wrapper {
    width: 100%;
    height: 100%;
    position: relative;
    overflow: auto;
}

.heatmap-canvas-wrapper svg {
    display: block;
}

/* Heatmap wrapper for scrolling */
.heatmap-wrapper {
    display: flex;
    flex-direction: column;
    width: 100%;
    height: 100%;
}

.heatmap-header {
    flex-shrink: 0;
    overflow: hidden;
}

.heatmap-scroll-container {
    flex: 1;
    overflow-y: auto;
    overflow-x: auto;
}

/* Heatmap cells */
.heatmap-cell {
    cursor: pointer;
    transition: stroke 0.15s ease, stroke-width 0.15s ease;
}

.heatmap-cell:hover {
    stroke-width: 2px;
}

/* Y-axis labels */
.y-label {
    cursor: pointer;
    transition: font-weight 0.15s ease;
}

.y-label:hover {
    font-weight: bold;
}

/* Loading overlay */
.heatmap-loading-overlay {
    position: absolute;
    top: 0;
    inset-inline: 0;
    bottom: 0;
    background: var(--color-surface-primary);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    z-index: 100;
}

/* Error message */
.heatmap-error {
    position: absolute;
    top: 1rem;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-danger-bg);
    color: var(--color-danger);
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    box-shadow: var(--shadow-sm);
    z-index: 50;
    font-family: var(--font-primary);
}

/* ============================================================================
   HEATMAP FOOTER (Fixed at Bottom)
   ============================================================================ */

.match-density-heatmap-footer {
    position: fixed;
    bottom: 0;
    inset-inline: 0;
    width: 100%;
    height: var(--footer-height);
    z-index: var(--z-nav);
    background: var(--color-sand-footer);
    box-shadow: 0 -2px 8px rgba(0, 0, 0, 0.1);
    border-top: 2px solid var(--color-primary);
}

/* Full-width bar with the controls DISTRIBUTED across it: each section takes
   an equal third and spreads its items evenly, so the buttons span the whole
   footer instead of clumping at the edges of a centered box. */
.match-density-heatmap-footer .footer-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.5rem;
    width: 100%;
    height: 100%;
    gap: 1rem;
}

.match-density-heatmap-footer .footer-left,
.match-density-heatmap-footer .footer-right {
    display: flex;
    align-items: center;
    justify-content: space-evenly;
    flex: 1 1 0;
    min-width: 0;
    gap: 0.75rem;
}

.match-density-heatmap-footer .footer-center {
    display: flex;
    align-items: center;
    justify-content: space-evenly;
    flex: 1 1 0;
    min-width: 0;
    gap: 1.5rem;
}

/* Color scale legend */
.match-density-heatmap-footer .heatmap-color-legend {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.25rem 0.75rem;
    background: var(--color-white);
    border: 1px solid var(--color-gray-border);
    border-radius: var(--radius-sm);
    direction: ltr;
}

.match-density-heatmap-footer .legend-gradient-bar {
    width: 100px;
    height: 14px;
    border-radius: 2px;
    background: linear-gradient(to right,
        #ffffcc,
        #ffeda0,
        #fed976,
        #feb24c,
        #fd8d3c,
        #fc4e2a,
        #e31a1c,
        #b10026
    );
    border: 1px solid rgba(0, 0, 0, 0.1);
}

.match-density-heatmap-footer .legend-min,
.match-density-heatmap-footer .legend-max {
    font-size: 0.75rem;
    color: var(--color-text-secondary);
    font-family: var(--font-system);
}

/* D3 Legend in footer */
.match-density-heatmap-footer .heatmap-legend {
    display: flex;
    align-items: center;
    padding: 0.25rem 0.75rem;
    background: var(--color-white);
    border: 1px solid var(--color-primary);
    border-radius: var(--radius-sm);
    min-height: 28px;
}

/* Control groups (dropdowns with labels) */
.match-density-heatmap-footer .control-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.match-density-heatmap-footer .control-group label {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    font-family: var(--font-primary);
    white-space: nowrap;
}

.match-density-heatmap-footer .control-group select {
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--color-primary);
    border-radius: var(--radius-sm);
    background: var(--color-white);
    font-size: 0.9rem;
    font-family: var(--font-primary);
    cursor: pointer;
    min-width: 100px;
}

.match-density-heatmap-footer .control-group select:hover {
    border-color: var(--color-primary-dark);
}

.match-density-heatmap-footer .control-group input[type="number"] {
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--color-primary);
    border-radius: var(--radius-sm);
    background: var(--color-white);
    font-size: 0.9rem;
    font-family: var(--font-primary);
    width: 70px;
    text-align: center;
}

.match-density-heatmap-footer .control-group input[type="number"]:hover,
.match-density-heatmap-footer .control-group input[type="number"]:focus {
    border-color: var(--color-primary-dark);
    outline: none;
}

/* Footer buttons */
.match-density-heatmap-footer .footer-button {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: var(--color-primary);
    color: var(--color-white);
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: var(--font-weight-medium);
    font-family: var(--font-primary);
    transition: var(--transition-bg);
}

.match-density-heatmap-footer .footer-button:hover {
    background: var(--color-primary-dark);
}

.match-density-heatmap-footer .footer-button.has-filters {
    background: var(--color-primary-dark);
    box-shadow: 0 0 0 2px var(--color-primary-light);
}

.match-density-heatmap-footer .filter-badge {
    background: var(--color-white);
    color: var(--color-primary);
    font-size: 0.75rem;
    padding: 0.125rem 0.5rem;
    border-radius: 10px;
    min-width: 1.25rem;
    text-align: center;
    font-weight: var(--font-weight-bold);
}

/* Stats display */
.match-density-heatmap-footer .heatmap-stats {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-family: var(--font-primary);
}

.match-density-heatmap-footer .stat-item {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.match-density-heatmap-footer .stat-value {
    font-size: 1rem;
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
}

.match-density-heatmap-footer .stat-label {
    font-size: 0.85rem;
    color: var(--color-text-secondary);
}

.match-density-heatmap-footer .stat-separator {
    color: var(--color-gray-medium);
    font-size: 0.85rem;
}

/* ============================================================================
   HEATMAP SETTINGS MODAL
   ============================================================================ */

.heatmap-settings-modal {
    width: 450px;
    max-width: 90vw;
    max-height: 80vh;
    overflow-y: auto;
}

.heatmap-settings-modal .modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--color-gray-light);
}

.heatmap-settings-modal .modal-header h3 {
    margin: 0;
    font-size: 1.25rem;
    font-family: var(--font-primary);
    color: var(--color-text-primary);
}

.heatmap-settings-modal .close-button {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--color-text-secondary);
    padding: 0.25rem;
    line-height: 1;
}

.heatmap-settings-modal .close-button:hover {
    color: var(--color-text-primary);
}

.heatmap-settings-modal .modal-body {
    padding: 1.5rem;
}

.heatmap-settings-modal .settings-section {
    margin-bottom: 1.5rem;
}

.heatmap-settings-modal .settings-section:last-child {
    margin-bottom: 0;
}

.heatmap-settings-modal .settings-section h4 {
    margin: 0 0 1rem 0;
    font-size: 1rem;
    font-family: var(--font-primary);
    color: var(--color-text-primary);
    border-bottom: 1px solid var(--color-gray-light);
    padding-bottom: 0.5rem;
}

.heatmap-settings-modal .setting-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 0.75rem;
}

.heatmap-settings-modal .setting-row:last-child {
    margin-bottom: 0;
}

.heatmap-settings-modal .setting-row label {
    font-size: 0.875rem;
    font-family: var(--font-primary);
    color: var(--color-text-secondary);
}

.heatmap-settings-modal .setting-row select,
.heatmap-settings-modal .setting-row input[type="number"] {
    padding: 0.5rem;
    border: 1px solid var(--color-primary);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-family: var(--font-primary);
    min-width: 120px;
}

.heatmap-settings-modal .setting-row input[type="range"] {
    flex: 1;
    margin-inline-end: 1rem;
    max-width: 150px;
}

.heatmap-settings-modal .checkbox-row {
    justify-content: flex-start;
}

.heatmap-settings-modal .checkbox-row label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
}

.heatmap-settings-modal .checkbox-row input[type="checkbox"] {
    width: 1rem;
    height: 1rem;
    cursor: pointer;
}

.heatmap-settings-modal .modal-footer {
    display: flex;
    justify-content: space-between;
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--color-gray-light);
}

.heatmap-settings-modal .primary-button {
    padding: 0.5rem 1.5rem;
    background: var(--color-primary);
    color: var(--color-white);
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: var(--font-weight-medium);
    font-family: var(--font-primary);
    transition: var(--transition-bg);
}

.heatmap-settings-modal .primary-button:hover {
    background: var(--color-primary-dark);
}

.heatmap-settings-modal .secondary-button {
    padding: 0.5rem 1.5rem;
    background: transparent;
    color: var(--color-text-secondary);
    border: 1px solid var(--color-gray-medium);
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 0.9rem;
    font-family: var(--font-primary);
    transition: var(--transition-bg);
}

.heatmap-settings-modal .secondary-button:hover {
    background: var(--color-gray-light);
}

/* ============================================================================
   TARGET DOCUMENT SELECTION MODAL
   ============================================================================ */

.modal-overlay {
    position: fixed;
    top: 0;
    inset-inline: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.target-doc-modal {
    background: var(--color-white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    width: 90%;
    max-width: 700px;
    min-height: 500px;
    overflow: visible;
    display: flex;
    flex-direction: column;
}

.target-doc-modal .modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.5rem;
    background: var(--color-sand-footer);
    border-bottom: 2px solid var(--color-primary);
}

.target-doc-modal .modal-header h3 {
    margin: 0;
    font-size: 1.25rem;
    font-family: var(--font-primary);
    color: var(--color-text-primary);
}

.target-doc-modal .modal-close {
    background: none;
    border: none;
    font-size: 1.75rem;
    cursor: pointer;
    color: var(--color-text-secondary);
    padding: 0;
    line-height: 1;
    transition: color 0.2s;
}

.target-doc-modal .modal-close:hover {
    color: var(--color-text-primary);
}

.target-doc-modal .modal-content {
    padding: 1.5rem;
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 350px;
}

.target-doc-modal .modal-description {
    font-family: var(--font-primary);
    font-size: 1rem;
    color: var(--color-text-secondary);
    margin: 0 0 1.5rem 0;
    text-align: center;
}

.target-doc-modal .target-doc-search-modal {
    position: relative;
    flex: 1;
}

.target-doc-modal .target-doc-search-modal .document-search-box {
    width: 100%;
}

.target-doc-modal .target-doc-search-modal .search-input {
    width: 100%;
    padding: 1rem;
    font-size: 1.1rem;
    border: 2px solid var(--color-primary);
    border-radius: var(--radius-sm);
}

.target-doc-modal .target-doc-search-modal .search-suggestions {
    z-index: 1100;
    max-height: 280px;
    border: 2px solid var(--color-primary);
}

.target-doc-modal .target-doc-search-modal .suggestion-item {
    padding: 1rem 1.25rem;
    font-size: 1rem;
}

.target-doc-modal .target-doc-search-modal .suggestion-title {
    font-size: 1.1rem;
    font-weight: var(--font-weight-medium);
    margin-bottom: 0.25rem;
}

.target-doc-modal .target-doc-search-modal .suggestion-author {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
}

/* Target document button in footer */
.target-doc-button {
    padding: 0.5rem 1rem;
    background: var(--color-white);
    color: var(--color-primary);
    border: 1px solid var(--color-primary);
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 0.9rem;
    font-family: var(--font-primary);
    transition: all 0.2s;
    max-width: 180px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.target-doc-button:hover {
    background: var(--color-primary-light);
    border-color: var(--color-primary-dark);
}

/* VS indicator in header */
.heatmap-vs-indicator {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--font-primary);
    margin-inline-start: auto;
    padding-inline-start: 1rem;
}

.heatmap-vs-indicator .vs-text {
    font-size: 1rem;
    color: var(--color-primary);
    font-weight: var(--font-weight-bold);
}

.heatmap-vs-indicator .target-title {
    font-size: 1.1rem;
    color: var(--color-text-primary);
    font-weight: var(--font-weight-medium);
}

.heatmap-vs-indicator .target-author {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
}

/* ============================================================================
   RESPONSIVE DESIGN
   ============================================================================ */

@media (max-width: 768px) {
    .match-density-heatmap-footer {
        height: auto;
        padding: 0.5rem 0;
    }

    .match-density-heatmap-footer .footer-controls {
        flex-direction: column;
        gap: 0.75rem;
        padding: 0.75rem 1rem;
    }

    .match-density-heatmap-footer .footer-left,
    .match-density-heatmap-footer .footer-center,
    .match-density-heatmap-footer .footer-right {
        width: 100%;
        justify-content: center;
        flex-wrap: wrap;
    }

    .match-density-heatmap-footer .control-group {
        flex: 1;
        min-width: 100px;
    }

    .match-density-heatmap-footer .control-group select {
        flex: 1;
    }

    .heatmap-header-info {
        flex-direction: column;
        align-items: flex-start;
    }
}

@media (max-width: 480px) {
    .match-density-heatmap-footer .footer-button {
        padding: 0.4rem 0.75rem;
        font-size: 0.85rem;
    }

    .match-density-heatmap-footer .control-group label {
        font-size: 0.8rem;
    }

    .match-density-heatmap-footer .control-group select {
        font-size: 0.85rem;
        min-width: 80px;
    }

    .match-density-heatmap-footer .stat-value {
        font-size: 0.9rem;
    }

    .match-density-heatmap-footer .stat-label {
        font-size: 0.75rem;
    }
}