/* ============================================
   MODERN TOOLBOX - Responsive Design
   ============================================ */

/* CSS Variables for theming - Matching infinityZoomControls */
:root {
    --toolbox-bg: rgba(255, 255, 255, 0.95);
    --toolbox-shadow: 0 2px 12px rgba(0, 0, 0, 0.2);
    --toolbox-border-radius: 25px;
    --tool-btn-size: 44px;
    --tool-btn-size-sm: 40px;
    --tool-btn-bg: #f0f0f0;
    --tool-btn-hover: #e0e0e0;
    --tool-btn-active: #337ab7;
    --tool-btn-active-text: #ffffff;
    --tool-btn-radius: 50%;
    --tool-group-gap: 6px;
    --transition-speed: 0.2s;
    --accent-primary: #337ab7;
    --accent-secondary: #286090;
    --accent-gradient: #337ab7;
    --text-primary: #333333;
    --text-secondary: #666666;
    --divider-color: #ddd;
}

/* Dark mode support - disabled to maintain light theme
@media (prefers-color-scheme: dark) {
    :root {
        --toolbox-bg: rgba(40, 40, 40, 0.95);
        --tool-btn-bg: #4a4a4a;
        --tool-btn-hover: #5a5a5a;
        --text-primary: #f0f0f0;
        --text-secondary: #aaaaaa;
        --divider-color: #555555;
    }
}
*/

/* ============================================
   Main Toolbox Container
   ============================================ */
#modernToolbox {
    position: fixed;
    z-index: 9999998;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-speed) cubic-bezier(0.4, 0, 0.2, 1);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
}

/* Desktop: Bottom horizontal bar */
@media (min-width: 769px) {
    #modernToolbox {
        bottom: 18px;
        left: 50%;
        transform: translateX(-50%);
        flex-direction: row;
        background: var(--toolbox-bg);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        border-radius: var(--toolbox-border-radius);
        box-shadow: var(--toolbox-shadow);
        padding: 10px 16px;
        gap: 6px;
        /* Limit width to avoid overlapping permanent features on sides */
        /* colouroptions is at right:75px with ~180px width, so need ~260px clearance on right */
        /* Plus some space on the left for other UI elements */
        max-width: calc(100vw - 450px);
    }
}

/* Tablet: Bottom bar with overflow scroll */
@media (min-width: 481px) and (max-width: 768px) {
    #modernToolbox {
        bottom: 14px;
        left: 50%;
        transform: translateX(-50%);
        flex-direction: row;
        background: var(--toolbox-bg);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        border-radius: var(--toolbox-border-radius);
        box-shadow: var(--toolbox-shadow);
        padding: 10px 12px;
        gap: 4px;
        /* Limit width to avoid overlapping permanent features on sides */
        max-width: calc(100vw - 250px);
    }
}

/* Mobile: Bottom bar with hamburger menu */
@media (max-width: 480px) {
    #modernToolbox {
        bottom: 14px;
        left: 50%;
        transform: translateX(-50%);
        flex-direction: row;
        background: var(--toolbox-bg);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        border-radius: var(--toolbox-border-radius);
        box-shadow: var(--toolbox-shadow);
        padding: 8px 10px;
        gap: 4px;
        /* Limit width to avoid overlapping permanent features on sides */
        max-width: calc(100vw - 180px);
    }
}

/* ============================================
   Tool Groups
   ============================================ */
.tool-group {
    display: flex;
    align-items: center;
    gap: 4px;
    position: relative;
}

.tool-group-divider {
    width: 1px;
    height: 28px;
    background: var(--divider-color);
    margin: 0 6px;
    flex-shrink: 0;
}

/* Desktop: show all groups */
@media (min-width: 769px) {
    .tool-group {
        flex-shrink: 0;
    }
}

/* Hide toolkit group on smaller screens (11" iPad and similar) to prevent overlap with colouroptions */
@media (max-width: 1200px) {
    .tool-group[data-group="toolkit"] {
        display: none !important;
    }
    .tool-group[data-group="toolkit"] + .tool-group-divider {
        display: none !important;
    }
}

/* Mobile: collapse into expandable groups */
@media (max-width: 480px) {
    .tool-group.collapsible:not(.expanded) .tool-btn:not(.group-toggle) {
        display: none;
    }
    .tool-group.collapsible.expanded {
        position: fixed;
        bottom: 80px;
        left: 8px;
        right: 8px;
        background: var(--toolbox-bg);
        backdrop-filter: blur(20px);
        border-radius: var(--toolbox-border-radius);
        box-shadow: var(--toolbox-shadow);
        padding: 12px;
        flex-wrap: wrap;
        justify-content: center;
        z-index: 10;
    }
    .tool-group-divider {
        display: none;
    }
}

/* ============================================
   Tool Buttons
   ============================================ */
.tool-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: var(--tool-btn-size);
    height: var(--tool-btn-size);
    border: none;
    background: var(--tool-btn-bg);
    border-radius: var(--tool-btn-radius);
    cursor: pointer;
    transition: all var(--transition-speed) ease;
    position: relative;
    flex-shrink: 0;
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
}

.tool-btn:hover {
    background: var(--tool-btn-hover);
    transform: translateY(-2px);
}

.tool-btn:active {
    transform: translateY(0) scale(0.95);
}

.tool-btn.active {
    background: var(--accent-primary);
    color: white;
    box-shadow: 0 2px 8px rgba(51, 122, 183, 0.4);
}

.tool-btn.active img,
.tool-btn.active svg {
    filter: brightness(0) invert(1);
}

.tool-btn img {
    width: 24px;
    height: 24px;
    object-fit: contain;
    pointer-events: none;
}

.tool-btn svg {
    width: 24px;
    height: 24px;
    fill: var(--text-primary);
    pointer-events: none;
}

.tool-btn.active svg {
    fill: var(--tool-btn-active-text);
}

/* Smaller buttons on mobile */
@media (max-width: 480px) {
    .tool-btn {
        width: var(--tool-btn-size-sm);
        height: var(--tool-btn-size-sm);
    }
    .tool-btn img,
    .tool-btn svg {
        width: 20px;
        height: 20px;
    }
}

/* ============================================
   Tooltips
   ============================================ */
.tool-btn::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: calc(100% + 8px);
    left: 50%;
    transform: translateX(-50%);
    background: var(--text-primary);
    color: var(--toolbox-bg);
    padding: 6px 10px;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 500;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all 0.2s ease;
    pointer-events: none;
    z-index: 100;
}

.tool-btn::before {
    content: '';
    position: absolute;
    bottom: calc(100% + 4px);
    left: 50%;
    transform: translateX(-50%);
    border: 5px solid transparent;
    border-top-color: var(--text-primary);
    opacity: 0;
    visibility: hidden;
    transition: all 0.2s ease;
    pointer-events: none;
    z-index: 100;
}

@media (min-width: 769px) {
    .tool-btn:hover::after,
    .tool-btn:hover::before {
        opacity: 1;
        visibility: visible;
    }
}

/* Hide tooltips on touch devices */
@media (hover: none) {
    .tool-btn::after,
    .tool-btn::before {
        display: none;
    }
}

/* ============================================
   Toggle Button (Open/Close Toolbox)
   ============================================ */
#toolboxToggle {
    position: fixed;
    bottom: 20px;
    left: 23px;
    width: 52px;
    height: 52px;
    border: none;
    background: #337ab7;
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.2);
    z-index: 9999999;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-speed) ease;
    -webkit-tap-highlight-color: transparent;
}

#toolboxToggle:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.25);
    background: #286090;
}

#toolboxToggle:active {
    transform: scale(0.95);
}

#toolboxToggle img {
    width: 28px;
    height: 28px;
    filter: brightness(0) invert(1);
    transition: transform var(--transition-speed) ease;
}

#toolboxToggle.open img {
    transform: rotate(45deg);
}

/* ============================================
   Color Palette
   ============================================ */
.color-palette {
    display: flex;
    align-items: center;
    gap: 4px;
}

.color-swatch {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    border: 2px solid transparent;
    cursor: pointer;
    transition: all 0.2s ease;
}

.color-swatch:hover {
    transform: scale(1.15);
}

.color-swatch.active {
    border-color: #337ab7;
    box-shadow: 0 0 0 2px var(--toolbox-bg), 0 0 0 4px #337ab7;
}

.color-swatch.black { background: #000000; }
.color-swatch.red { background: #E20101; }
.color-swatch.green { background: #006400; }
.color-swatch.blue { background: #0000FF; }

/* ============================================
   Size Slider
   ============================================ */
.size-slider-container {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 0 8px;
}

.size-slider {
    -webkit-appearance: none;
    appearance: none;
    width: 80px;
    height: 6px;
    background: var(--divider-color);
    border-radius: 3px;
    outline: none;
    cursor: pointer;
}

.size-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    background: #337ab7;
    border-radius: 50%;
    cursor: pointer;
    transition: transform 0.2s ease;
}

.size-slider::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

.size-slider::-moz-range-thumb {
    width: 18px;
    height: 18px;
    background: #337ab7;
    border-radius: 50%;
    cursor: pointer;
    border: none;
}

@media (max-width: 768px) {
    .size-slider {
        width: 60px;
    }
}

/* ============================================
   More Menu (Overflow)
   ============================================ */
.more-menu {
    position: relative;
}

.more-menu-popup {
    position: absolute;
    bottom: calc(100% + 12px);
    right: 0;
    background: var(--toolbox-bg);
    backdrop-filter: blur(20px);
    border-radius: var(--toolbox-border-radius);
    box-shadow: var(--toolbox-shadow);
    padding: 16px;
    display: none;
    min-width: 380px;
    max-width: 480px;
    z-index: 10;
}

.more-menu-popup.show {
    display: grid !important;
    grid-template-columns: repeat(6, 1fr);
    gap: 10px;
    animation: slideUp 0.25s ease;
}

/* Responsive grid for more menu */
@media (max-width: 768px) {
    .more-menu-popup {
        min-width: 280px;
        max-width: 340px;
    }
    .more-menu-popup.show {
        grid-template-columns: repeat(4, 1fr);
    }
}

@media (max-width: 480px) {
    .more-menu-popup {
        min-width: 200px;
        max-width: 260px;
        right: -40px;
    }
    .more-menu-popup.show {
        grid-template-columns: repeat(3, 1fr);
        gap: 8px;
    }
}

.more-menu-popup .more-menu-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    padding: 8px 4px;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color 0.15s ease;
}

.more-menu-popup .more-menu-item:hover {
    background: rgba(0, 0, 0, 0.06);
}

.more-menu-popup .more-menu-item:active {
    background: rgba(0, 0, 0, 0.1);
}

.more-menu-popup .more-menu-item .tool-btn {
    margin: 0;
    pointer-events: none;
}

.more-menu-popup .more-menu-item .more-menu-label {
    font-size: 10px;
    font-weight: 500;
    color: #666;
    text-align: center;
    line-height: 1.2;
    max-width: 60px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}


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

/* ============================================
   Quick Actions (Mobile)
   ============================================ */
.quick-actions {
    display: none;
}

@media (max-width: 480px) {
    .quick-actions {
        display: flex;
        flex: 1;
        justify-content: space-around;
        gap: 4px;
    }
    .primary-tools {
        display: none;
    }
    .primary-tools.show {
        display: flex;
        position: fixed;
        bottom: 80px;
        left: 8px;
        right: 8px;
        background: var(--toolbox-bg);
        backdrop-filter: blur(20px);
        border-radius: var(--toolbox-border-radius);
        box-shadow: var(--toolbox-shadow);
        padding: 12px;
        flex-wrap: wrap;
        justify-content: center;
        gap: 8px;
        z-index: 10;
        animation: slideUp 0.25s ease;
    }
}

/* ============================================
   Backdrop for expanded menus
   ============================================ */
.toolbox-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.3);
    z-index: 9999996;
    opacity: 0;
    visibility: hidden;
    transition: all 0.25s ease;
}

.toolbox-backdrop.show {
    opacity: 1;
    visibility: visible;
}

/* ============================================
   Toolbox Hidden State
   ============================================ */
#modernToolbox.hidden {
    opacity: 0;
    transform: translateX(-50%) translateY(100%);
    pointer-events: none;
}

@media (max-width: 768px) {
    #modernToolbox.hidden {
        transform: translateY(100%);
    }
}

/* ============================================
   Sub-menus (Shapes, Networking, etc.)
   ============================================ */
.tool-submenu {
    position: fixed;
    bottom: 90px;
    right: 20px;
    background: var(--toolbox-bg);
    backdrop-filter: blur(20px);
    border-radius: var(--toolbox-border-radius);
    box-shadow: var(--toolbox-shadow);
    padding: 16px;
    display: none;
    flex-direction: column;
    gap: 12px;
    z-index: 99999999999;
    max-width: calc(100vw - 40px);
}

.tool-submenu.show {
    display: flex !important;
    animation: slideUp 0.25s ease;
}

.tool-submenu-title {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 8px;
    width: 100%;
}

.tool-submenu-content {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    justify-content: center;
}

@media (max-width: 480px) {
    .tool-submenu {
        left: 8px;
        right: 8px;
        bottom: 80px;
    }
}

/* ============================================
   Accessibility
   ============================================ */
.tool-btn:focus-visible {
    outline: 2px solid var(--accent-primary);
    outline-offset: 2px;
}

/* Reduce motion for users who prefer it */
@media (prefers-reduced-motion: reduce) {
    .tool-btn,
    #toolboxToggle,
    #modernToolbox,
    .more-menu-popup,
    .tool-submenu {
        transition: none;
        animation: none;
    }
}

/* ============================================
   Secondary Toolbox (Right side - Notes/Saved)
   Styled to match homemodern.php viewsaved
   ============================================ */
#secondaryToolbox {
    position: fixed;
    bottom: 20px;
    right: 10px;
    z-index: 100000;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    background: transparent;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    border-radius: 0;
    box-shadow: none;
    padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    transition: all var(--transition-speed) cubic-bezier(0.4, 0, 0.2, 1);
}

#secondaryToolbox .tool-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 45px;
    height: 45px;
    border: none;
    background: linear-gradient(135deg, #8b5cf6 0%, #7c3aed 100%);
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(139, 92, 246, 0.3);
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    -webkit-tap-highlight-color: transparent;
}

#secondaryToolbox .tool-btn:hover {
    background: linear-gradient(135deg, #7c3aed 0%, #6d28d9 100%);
    box-shadow: 0 6px 20px rgba(139, 92, 246, 0.4);
    transform: translateY(-2px);
}

#secondaryToolbox .tool-btn:active {
    transform: translateY(0) scale(0.95);
}

#secondaryToolbox .tool-btn img {
    width: 28px;
    height: 28px;
    object-fit: contain;
    filter: brightness(0) invert(1);
}

/* modernTool_saved - distinct teal color matching homemodern.php viewsaved */
#modernTool_saved {
    background: linear-gradient(135deg, #14b8a6 0%, #0d9488 100%) !important;
    box-shadow: 0 4px 12px rgba(20, 184, 166, 0.3) !important;
}

#modernTool_saved:hover {
    background: linear-gradient(135deg, #0d9488 0%, #0f766e 100%) !important;
    box-shadow: 0 6px 20px rgba(20, 184, 166, 0.4) !important;
    transform: translateY(-2px) !important;
}

#modernTool_saved img {
    filter: brightness(0) invert(1) !important;
}

/* Mobile adjustments */
@media (max-width: 480px) {
    #secondaryToolbox {
        bottom: 14px;
        right: 10px;
        gap: 8px;
    }
    #secondaryToolbox .tool-btn {
        width: 40px;
        height: 40px;
    }
    #secondaryToolbox .tool-btn img {
        width: 24px;
        height: 24px;
    }
}

/* ============================================
   PDF Import Modal
   ============================================ */
.pdf-import-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    z-index: 99999999999999;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.pdf-import-modal.show {
    opacity: 1;
    visibility: visible;
}

.pdf-import-content {
    background: white;
    border-radius: 16px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow: hidden;
    transform: scale(0.9) translateY(20px);
    transition: transform 0.3s ease;
}

.pdf-import-modal.show .pdf-import-content {
    transform: scale(1) translate(65%, 25%);
}

.pdf-import-header {
    background: #337ab7;
    color: white;
    padding: 16px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.pdf-import-header h3 {
    margin: 0;
    font-size: 18px;
    font-weight: 600;
}

.pdf-import-close {
    background: none;
    border: none;
    color: white;
    font-size: 24px;
    cursor: pointer;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: background 0.2s ease;
}

.pdf-import-close:hover {
    background: rgba(255, 255, 255, 0.2);
}

.pdf-import-body {
    padding: 24px;
}

.pdf-import-tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 20px;
}

.pdf-import-tab {
    flex: 1;
    padding: 12px 16px;
    border: 2px solid #ddd;
    background: white;
    border-radius: 8px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.2s ease;
    text-align: center;
}

.pdf-import-tab:hover {
    border-color: #337ab7;
}

.pdf-import-tab.active {
    background: #337ab7;
    color: white;
    border-color: #337ab7;
}

.pdf-import-panel {
    display: none;
}

.pdf-import-panel.active {
    display: block;
}

.pdf-upload-area {
    border: 2px dashed #ddd;
    border-radius: 12px;
    padding: 40px 20px;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s ease;
}

.pdf-upload-area:hover {
    border-color: #337ab7;
    background: rgba(51, 122, 183, 0.05);
}

.pdf-upload-area.dragover {
    border-color: #337ab7;
    background: rgba(51, 122, 183, 0.1);
}

.pdf-upload-icon {
    font-size: 48px;
    color: #337ab7;
    margin-bottom: 12px;
}

.pdf-upload-text {
    font-size: 16px;
    color: #333;
    margin-bottom: 8px;
}

.pdf-upload-hint {
    font-size: 13px;
    color: #666;
}

.pdf-url-input {
    width: 100%;
    padding: 14px 16px;
    border: 2px solid #ddd;
    border-radius: 8px;
    font-size: 14px;
    transition: border-color 0.2s ease;
    box-sizing: border-box;
}

.pdf-url-input:focus {
    outline: none;
    border-color: #337ab7;
}

.pdf-url-hint {
    font-size: 13px;
    color: #666;
    margin-top: 8px;
}

.pdf-import-footer {
    padding: 16px 24px;
    border-top: 1px solid #eee;
    display: flex;
    gap: 12px;
    justify-content: flex-end;
}

.pdf-import-btn {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

.pdf-import-btn.cancel {
    background: #f0f0f0;
    color: #333;
}

.pdf-import-btn.cancel:hover {
    background: #e0e0e0;
}

.pdf-import-btn.primary {
    background: #337ab7;
    color: white;
}

.pdf-import-btn.primary:hover {
    background: #286090;
}

.pdf-import-btn.primary:disabled {
    background: #aaa;
    cursor: not-allowed;
}

.pdf-progress {
    display: none;
    margin-top: 20px;
}

.pdf-progress.show {
    display: block;
}

.pdf-progress-bar {
    height: 8px;
    background: #eee;
    border-radius: 4px;
    overflow: hidden;
}

.pdf-progress-fill {
    height: 100%;
    background: #337ab7;
    border-radius: 4px;
    width: 0%;
    transition: width 0.3s ease;
}

.pdf-progress-text {
    font-size: 13px;
    color: #666;
    margin-top: 8px;
    text-align: center;
}

/* Hide legacy postit and viewsaved buttons */
#addpostit,
#viewsaved {
    display: none !important;
    opacity: 0 !important;
}

/* ============================================
   Legacy Toolbox Override (Hide old toolbox)
   ============================================ */
#toolbox,
#activatepen,
#activateblack,
#colourpallette,
#activateline,
#activateeraser,
#activatetexttool,
#marker-container,
#removelasttool,
#removealltool,
#protractortool,
#compasstool,
#rulertool,
#internettool,
#imagetool,
#shapestool,
#manipulativestool,
#webcamtooltoolbox,
#savetodisktool,
#savetoimagetool,
#toolboxtool,
#networkingtool,
#sharetool,
#projectortool,
#handtool,
#linesandlabels,
#calculatortool,
#numberlinetool,
#subtitlestool,
#timertool,
#ragtool,
#noisetool,
#activatehighlighter {
    display: none !important;
    opacity: 0 !important;
}