/**
 * PDF viewer drawing tools (overlay markup on PDF.js canvas).
 */

.pdf-custom-viewer-main {
    position: relative;
}

.pdf-custom-viewer-canvas-zoomwrap {
    position: relative;
}

.pdf-drawing-overlay-canvas {
    position: absolute;
    top: 0;
    left: 0;
    z-index: 4;
    touch-action: none;
    pointer-events: none;
}

.pdf-custom-viewer--drawing-mode .pdf-drawing-overlay-canvas {
    pointer-events: auto;
}

/* —— Floating tool strip (inside PDF main area) —— */
.pdf-viewer-drawing-tools {
    position: absolute;
    left: 50%;
    bottom: calc(env(safe-area-inset-bottom, 0px) + 0.65rem);
    transform: translateX(-50%);
    z-index: 30;
    display: none;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 0.2rem;
    max-width: calc(100% - 1.25rem);
    padding: 0.35rem 0.45rem;
    border-radius: 14px;
    background: color-mix(in srgb, var(--bg-card) 92%, transparent);
    border: 1px solid var(--border-color);
    box-shadow: 0 6px 22px rgba(0, 0, 0, 0.28);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.pdf-viewer-drawing-tools.active {
    display: inline-flex;
}

.pdf-drawing-tool-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    min-width: 36px;
    padding: 0;
    border: none;
    border-radius: 10px;
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 0.8rem;
    cursor: pointer;
    transition: background 0.15s ease, transform 0.1s ease;
}

.pdf-drawing-tool-btn:active {
    transform: scale(0.96);
}

.pdf-drawing-tool-btn.active {
    background: var(--accent, #4a90d9);
    color: #fff;
}

.pdf-drawing-tool-btn.pencil.active {
    background: #e53e3e;
}

.pdf-drawing-tool-btn.marker.active {
    background: #d69e2e;
}

.pdf-drawing-tool-btn.eraser.active {
    background: #718096;
}

.pdf-drawing-color-picker {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 10px;
    overflow: hidden;
    background: var(--bg-secondary);
}

.pdf-drawing-color-picker input[type='color'] {
    width: 44px;
    height: 44px;
    padding: 0;
    border: none;
    background: transparent;
    cursor: pointer;
}

.pdf-drawing-divider {
    width: 1px;
    height: 22px;
    margin: 0 0.12rem;
    background: var(--border-color);
    flex-shrink: 0;
}

.pdf-drawing-size-picker {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    min-width: 5.5rem;
    padding: 0 0.25rem;
}

.pdf-drawing-size-picker input[type='range'] {
    flex: 1;
    min-width: 3rem;
    accent-color: var(--accent, #4a90d9);
}

.pdf-drawing-size-picker span {
    min-width: 1rem;
    font-size: 0.72rem;
    font-weight: var(--font-weight-semibold);
    color: var(--text-secondary);
    text-align: center;
}

.pdf-viewer-draw-toggle {
    position: absolute;
    right: calc(env(safe-area-inset-right, 0px) + 0.55rem);
    bottom: calc(env(safe-area-inset-bottom, 0px) + 0.65rem);
    z-index: 40;
    pointer-events: auto;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    padding: 0;
    border: none;
    border-radius: 50%;
    background: var(--bg-card);
    color: var(--text-primary);
    font-size: 1rem;
    cursor: pointer;
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.22);
    border: 1px solid var(--border-color);
    transition: background 0.15s ease, transform 0.1s ease, color 0.15s ease;
}

.pdf-viewer-draw-toggle:active {
    transform: scale(0.95);
}

.pdf-viewer-draw-toggle.active {
    background: var(--accent, #4a90d9);
    color: #fff;
    border-color: transparent;
}

.pdf-viewer-save-drawing {
    position: absolute;
    right: calc(env(safe-area-inset-right, 0px) + 0.55rem);
    bottom: calc(env(safe-area-inset-bottom, 0px) + 3.65rem);
    z-index: 40;
    pointer-events: auto;
    display: none;
    align-items: center;
    gap: 0.35rem;
    padding: 0.45rem 0.75rem;
    border: none;
    border-radius: 999px;
    background: #38a169;
    color: #fff;
    font-size: 0.78rem;
    font-weight: var(--font-weight-semibold);
    cursor: pointer;
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.2);
}

.pdf-viewer-save-drawing.active {
    display: inline-flex;
}

.pdf-viewer-save-drawing:active {
    transform: scale(0.97);
}

/* Drawing mode: allow panning when zoomed; strokes captured on overlay only */
.pdf-custom-viewer-scroll.pdf-custom-viewer-scroll--drawing {
    touch-action: pan-x pan-y;
    overflow: auto;
    -webkit-overflow-scrolling: touch;
}

.pdf-custom-viewer--drawing-mode .pdf-custom-viewer-scroll {
    cursor: crosshair;
}

#pdfViewerModal.pdf-viewer-modal--drawing-mode .pdf-custom-viewer-toolbar--in-modal-header,
#pdfViewerModal.pdf-viewer-modal--drawing-mode .pdf-viewer-header-fitwidth-btn,
#pdfViewerModal.pdf-viewer-modal--drawing-mode .pdf-viewer-pdf-tools-menu-wrap,
#pdfViewerModal.pdf-viewer-modal--drawing-mode .pdf-viewer-header-inline,
#pdfViewerModal.pdf-viewer-modal--drawing-mode .pdf-viewer-thumbs-toggle-btn {
    pointer-events: none;
    opacity: 0.45;
}

#pdfViewerModal.pdf-viewer-modal--external .pdf-viewer-draw-toggle,
#pdfViewerModal.pdf-viewer-modal--external .pdf-viewer-drawing-tools,
#pdfViewerModal.pdf-viewer-modal--external .pdf-viewer-save-drawing {
    display: none !important;
}

@container pdfviewermodal (max-width: 520px) {
    .pdf-viewer-drawing-tools {
        left: 0.5rem;
        right: 0.5rem;
        transform: none;
        max-width: none;
    }

    .pdf-drawing-size-picker {
        display: none;
    }
}