.btn-teal {
    background: linear-gradient(135deg, #20c997 60%, #17a589 100%);
    color: #fff;
    border: none;
    box-shadow: 0 2px 8px rgba(32, 201, 151, 0.10);
}
.btn-teal:hover, .btn-teal:focus {
    background: linear-gradient(135deg, #48e6b5 60%, #20c997 100%);
    box-shadow: 0 4px 16px rgba(32, 201, 151, 0.18);
    color: #fff;
    transform: translateY(-1px) scale(1.03);
}
.btn-teal:active {
    background: linear-gradient(135deg, #17a589 60%, #138d75 100%);
    color: #fff;
    box-shadow: 0 1px 2px rgba(32, 201, 151, 0.10);
}

.btn-red {
    background: linear-gradient(135deg, #dc3545 60%, #c82333 100%);
    color: #fff;
    border: none;
    box-shadow: 0 2px 8px rgba(220, 53, 69, 0.10);
}
.btn-red:hover, .btn-red:focus {
    background: linear-gradient(135deg, #e85563 60%, #dc3545 100%);
    box-shadow: 0 4px 16px rgba(220, 53, 69, 0.18);
    color: #fff;
    transform: translateY(-1px) scale(1.03);
}
.btn-red:active {
    background: linear-gradient(135deg, #c82333 60%, #a71d2a 100%);
    color: #fff;
    box-shadow: 0 1px 2px rgba(220, 53, 69, 0.10);
}

.btn-green {
    background: linear-gradient(135deg, #28a745 60%, #218838 100%);
    color: #fff;
    border: none;
    box-shadow: 0 2px 8px rgba(40, 167, 69, 0.10);
}
.btn-green:hover, .btn-green:focus {
    background: linear-gradient(135deg, #34ce57 60%, #28a745 100%);
    box-shadow: 0 4px 16px rgba(40, 167, 69, 0.18);
    color: #fff;
    transform: translateY(-1px) scale(1.03);
}
.btn-green:active {
    background: linear-gradient(135deg, #218838 60%, #1e7e34 100%);
    color: #fff;
    box-shadow: 0 1px 2px rgba(40, 167, 69, 0.10);
}

.btn-blue {
    background: linear-gradient(135deg, #007bff 60%, #0056b3 100%);
    color: #fff;
    border: none;
    box-shadow: 0 2px 8px rgba(0, 123, 255, 0.10);
}
.btn-blue:hover, .btn-blue:focus {
    background: linear-gradient(135deg, #339cff 60%, #007bff 100%);
    box-shadow: 0 4px 16px rgba(0, 123, 255, 0.18);
    color: #fff;
    transform: translateY(-1px) scale(1.03);
}
.btn-blue:active {
    background: linear-gradient(135deg, #0056b3 60%, #003d80 100%);
    color: #fff;
    box-shadow: 0 1px 2px rgba(0, 123, 255, 0.10);
}

#reset-all-btn {
    background: linear-gradient(135deg, #dc3545 60%, #c82333 100%);
    color: #fff;
    border: none;
    box-shadow: 0 2px 8px rgba(220, 53, 69, 0.10);
}
#reset-all-btn:hover, #reset-all-btn:focus {
    background: linear-gradient(135deg, #e85563 60%, #dc3545 100%);
    box-shadow: 0 4px 16px rgba(220, 53, 69, 0.18);
    color: #fff;
    transform: translateY(-1px) scale(1.03);
}
#reset-all-btn:active {
    background: linear-gradient(135deg, #c82333 60%, #a71d2a 100%);
    color: #fff;
    box-shadow: 0 1px 2px rgba(220, 53, 69, 0.10);
}
/* Button color groups for visual distinction */
.btn-purple {
    background: linear-gradient(135deg, #6f42c1 60%, #5a32a3 100%);
    color: #fff;
    border: none;
    box-shadow: 0 2px 8px rgba(111, 66, 193, 0.10);
}
.btn-purple:hover, .btn-purple:focus {
    background: linear-gradient(135deg, #7c4dff 60%, #6f42c1 100%);
    box-shadow: 0 4px 16px rgba(111, 66, 193, 0.18);
    color: #fff;
    transform: translateY(-1px) scale(1.03);
}
.btn-purple:active {
    background: linear-gradient(135deg, #5a32a3 60%, #4b277e 100%);
    color: #fff;
    box-shadow: 0 1px 2px rgba(111, 66, 193, 0.10);
}

.btn-blue {
    background: linear-gradient(135deg, #007bff 60%, #0056b3 100%);
    color: #fff;
    border: none;
    box-shadow: 0 2px 8px rgba(0, 123, 255, 0.10);
}
.btn-blue:hover, .btn-blue:focus {
    background: linear-gradient(135deg, #339cff 60%, #007bff 100%);
    box-shadow: 0 4px 16px rgba(0, 123, 255, 0.18);
    color: #fff;
    transform: translateY(-1px) scale(1.03);
}
.btn-blue:active {
    background: linear-gradient(135deg, #0056b3 60%, #003d80 100%);
    color: #fff;
    box-shadow: 0 1px 2px rgba(0, 123, 255, 0.10);
}

.btn-green {
    background: linear-gradient(135deg, #28a745 60%, #218838 100%);
    color: #fff;
    border: none;
    box-shadow: 0 2px 8px rgba(40, 167, 69, 0.10);
}
.btn-green:hover, .btn-green:focus {
    background: linear-gradient(135deg, #34ce57 60%, #28a745 100%);
    box-shadow: 0 4px 16px rgba(40, 167, 69, 0.18);
    color: #fff;
    transform: translateY(-1px) scale(1.03);
}
.btn-green:active {
    background: linear-gradient(135deg, #218838 60%, #1e7e34 100%);
    color: #fff;
    box-shadow: 0 1px 2px rgba(40, 167, 69, 0.10);
}

.btn-red {
    background: linear-gradient(135deg, #dc3545 60%, #c82333 100%);
    color: #fff;
    border: none;
    box-shadow: 0 2px 8px rgba(220, 53, 69, 0.10);
}
.btn-red:hover, .btn-red:focus {
    background: linear-gradient(135deg, #e85563 60%, #dc3545 100%);
    box-shadow: 0 4px 16px rgba(220, 53, 69, 0.18);
    color: #fff;
    transform: translateY(-1px) scale(1.03);
}
.btn-red:active {
    background: linear-gradient(135deg, #c82333 60%, #a71d2a 100%);
    color: #fff;
    box-shadow: 0 1px 2px rgba(220, 53, 69, 0.10);
}

.btn-teal {
    background: linear-gradient(135deg, #20c997 60%, #17a589 100%);
    color: #fff;
    border: none;
    box-shadow: 0 2px 8px rgba(32, 201, 151, 0.10);
}
.btn-teal:hover, .btn-teal:focus {
    background: linear-gradient(135deg, #48e6b5 60%, #20c997 100%);
    box-shadow: 0 4px 16px rgba(32, 201, 151, 0.18);
    color: #fff;
    transform: translateY(-1px) scale(1.03);
}
.btn-teal:active {
    background: linear-gradient(135deg, #17a589 60%, #138d75 100%);
    color: #fff;
    box-shadow: 0 1px 2px rgba(32, 201, 151, 0.10);
}

/* Remove .btn-secondary purple style, use .btn-purple for Undo/Redo */
/* static/style.css */

/* 1. Base & Font Setup */
body {
    font-family: 'Inter', sans-serif;
    background-color: #f8f9fa; /* Lighter grey background */
    margin: 0 auto;
    max-width: 1400px;
    padding: 20px;
}

h1, h3 {
    color: #2c3e50;
}

/* 2. Header */
#app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

/* 2.5 Demo Section */
#demo-section {
    text-align: center;
    margin-bottom: 30px;
    padding: 25px;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border-radius: 12px;
    border: 1px solid #dee2e6;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

#demo-section h3 {
    margin: 0 0 20px 0;
    color: #2c3e50;
    font-size: 20px;
    font-weight: 700;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

#demo-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 15px;
    flex-wrap: wrap;
}

.demo-button {
    position: relative;
    padding: 14px 28px;
    font-size: 15px;
    font-weight: 600;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    min-width: 160px;
    text-align: center;
    user-select: none;

    /* 3D Effect Base */
    background: linear-gradient(145deg, #007bff, #0056b3);
    color: white;
    border-bottom: 4px solid #004085;
    box-shadow: 0 6px 12px rgba(0, 123, 255, 0.3);
    transform: translateY(0);
}

.demo-button:hover {
    background: linear-gradient(145deg, #0069d9, #007bff);
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0, 123, 255, 0.4);
    border-bottom: 4px solid #0056b3;
}

.demo-button:active {
    background: linear-gradient(145deg, #004085, #003366);
    transform: translateY(1px);
    box-shadow: 0 3px 6px rgba(0, 123, 255, 0.3);
    border-bottom: 2px solid #002752;
}

.demo-button.loading {
    background: linear-gradient(145deg, #6c757d, #5a6268);
    border-bottom: 4px solid #495057;
    cursor: not-allowed;
    transform: none;
    box-shadow: 0 4px 8px rgba(108, 117, 125, 0.3);
}

.demo-button.success {
    background: linear-gradient(145deg, #28a745, #218838);
    border-bottom: 4px solid #1e7e34;
    box-shadow: 0 6px 12px rgba(40, 167, 69, 0.3);
    animation: successPulse 0.6s ease-out;
}

@keyframes successPulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

.demo-description {
    margin: 0;
    color: #6c757d;
    font-size: 14px;
    font-style: italic;
    line-height: 1.4;
}

/* Responsive adjustments for demo section */
@media (max-width: 768px) {
    #demo-buttons {
        flex-direction: column;
        align-items: center;
        gap: 12px;
    }

    .demo-button {
        min-width: 200px;
        font-size: 14px;
        padding: 12px 24px;
    }
}

#app-logo {
    height: 100px;
}

#global-actions {
    display: flex;
    gap: 10px;
}

/* 3. Main Two-Column Layout */
#main-app-container {
    display: grid;
    grid-template-columns: 1fr 380px;
    gap: 50px; /* Increased from 30px to 50px for more space */
    align-items: start;
    min-height: calc(100vh - 200px);
}

#main-content {
    grid-column: 1;
    display: flex;
    flex-direction: column;
    align-items: center; /* Center children horizontally */
}

#sticky-sidebar-wrapper {
    grid-column: 2;
    position: sticky;
    top: 20px;
    display: flex;
    flex-direction: column;
    max-height: calc(100vh - 40px); /* Sets the boundary for the entire sticky block */
}

#sidebar-controls {
    display: flex;
    flex-direction: column;
    gap: 20px;
    overflow-y: auto; /* Allows the cards inside to scroll */
    flex-shrink: 1;   /* Allows this section to shrink when the preview expands */
}

/* Custom scrollbar styling for sidebar */
#sidebar-controls::-webkit-scrollbar {
    width: 8px;
}

#sidebar-controls::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 4px;
}

#sidebar-controls::-webkit-scrollbar-thumb {
    background: #c1c1c1;
    border-radius: 4px;
}

#sidebar-controls::-webkit-scrollbar-thumb:hover {
    background: #a8a8a8;
}



/* Floating Live Preview Window */
.floating-preview {
    position: fixed;
    top: 100px;
    right: 20px;
    width: 400px;
    height: 350px;
    background-color: white;
    box-shadow: 0 8px 32px rgba(0,0,0,0.2);
    border-radius: 12px;
    border: 1px solid #e2e8f0;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transition: all 0.3s ease;
    resize: both;
    min-width: 300px;
    min-height: 250px;
    max-width: 80vw;
    max-height: 80vh;
}

.floating-preview.hidden {
    display: none;
}

.floating-preview-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border-bottom: 1px solid #e2e8f0;
    cursor: move;
    user-select: none;
    flex-shrink: 0;
}

.floating-preview-header h4 {
    margin: 0;
    font-size: 14px;
    color: #333;
    flex: 1;
    cursor: move;
}

.floating-preview-close {
    background: none;
    border: none;
    color: #6c757d;
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.floating-preview-close:hover {
    background-color: #f8f9fa;
    color: #333;
}

.floating-preview-close:active {
    transform: scale(0.95);
}

.floating-preview-close .material-symbols-outlined {
    font-size: 18px;
}

.floating-preview-content {
    flex: 1;
    padding: 16px;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

#floating-preview-canvas {
    display: block;
    width: 100%;
    height: 100%;
    max-width: 100%;
    max-height: calc(100% - 40px); /* Account for info text */
    border: 1px solid #ddd;
    border-radius: 4px;
    background: white;
    margin: 0 auto;
    object-fit: contain;
    flex: 1;
}

.floating-preview-info {
    font-size: 11px;
    color: #666;
    text-align: center;
    margin-top: 8px;
    line-height: 1.3;
    flex-shrink: 0;
}

.floating-preview-resize-handle {
    position: absolute;
    bottom: 0;
    right: 0;
    width: 20px;
    height: 20px;
    cursor: nw-resize;
    background: linear-gradient(-45deg, transparent 30%, #ccc 30%, #ccc 70%, transparent 70%);
    border-radius: 0 0 12px 0;
    z-index: 1;
}

.floating-preview-resize-handle:hover {
    background: linear-gradient(-45deg, transparent 30%, #999 30%, #999 70%, transparent 70%);
}

/* Ensure floating preview doesn't interfere with page scrolling */
.floating-preview {
    pointer-events: auto;
}

.floating-preview * {
    pointer-events: auto;
}

/* Prevent text selection during drag */
.floating-preview-header {
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}

/* Live Preview Button Styling */
#live-preview-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-left: 10px;
    background: linear-gradient(145deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    padding: 10px 16px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 
        0 4px 15px rgba(102, 126, 234, 0.4),
        0 2px 4px rgba(0, 0, 0, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.2);
    position: relative;
    overflow: hidden;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

#live-preview-btn:hover {
    background: linear-gradient(145deg, #5a6fd8 0%, #6a4190 100%);
    transform: translateY(-2px);
    box-shadow: 
        0 6px 20px rgba(102, 126, 234, 0.5),
        0 4px 8px rgba(0, 0, 0, 0.15),
        inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

#live-preview-btn:active {
    background: linear-gradient(145deg, #4f64c6 0%, #5f3780 100%);
    transform: translateY(0);
    box-shadow: 
        0 2px 10px rgba(102, 126, 234, 0.3),
        0 1px 3px rgba(0, 0, 0, 0.2),
        inset 0 2px 4px rgba(0, 0, 0, 0.1);
}

#live-preview-btn:focus {
    outline: none;
    box-shadow: 
        0 4px 15px rgba(102, 126, 234, 0.4),
        0 2px 4px rgba(0, 0, 0, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.2),
        0 0 0 3px rgba(102, 126, 234, 0.3);
}

#live-preview-btn .material-symbols-outlined {
    font-size: 18px;
    filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.2));
}

/* Add a subtle glow effect */
#live-preview-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

#live-preview-btn:hover::before {
    left: 100%;
}



/* 4. Sidebar Card Styling */
.sidebar-card {
    background-color: white;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
    border-radius: 8px;
    border: 1px solid #e2e8f0;
    width: 100%;
    box-sizing: border-box;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 25px; /* Increased horizontal padding */
    cursor: pointer;
    border-bottom: 1px solid #eee;
}

.card-header h3 {
    margin: 0 10px 0 0; /* Add right margin to prevent overlap with collapse arrow */
    font-size: 16px;
    flex: 1; /* Allow title to take available space */
    word-wrap: break-word; /* Handle long titles gracefully */
}

.collapse-arrow {
    transition: transform 0.2s ease;
    color: #6c757d;
    font-size: 20px;
}

.sidebar-card.collapsed .collapse-arrow {
    transform: rotate(-90deg);
}

.card-content {
    padding: 20px;
    transition: all 0.2s ease;
}

.sidebar-card.collapsed .card-content {
    display: none;
}

.sidebar-card h3 {
    margin-top: 0;
    margin-bottom: 15px;
    border-bottom: 1px solid #eee;
    padding-bottom: 10px;
    font-size: 16px;
}

/* Fix Quality Advisor styling to match other sections */
#quality-feedback .card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 25px;
    cursor: pointer;
    border-bottom: 1px solid #eee;
}

#quality-feedback .card-header h3 {
    margin: 0 10px 0 0;
    font-size: 16px;
    flex: 1;
    word-wrap: break-word;
}

#quality-feedback .card-content {
    padding: 20px;
}

/* 5. Generic Form Control Styling within Cards */
.control-item {
    margin-bottom: 15px;
}
.control-item:last-child {
    margin-bottom: 0;
}
.control-item label {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
    font-size: 14px;
}
.control-item select, .control-item input[type="number"], .control-item input[type="range"] {
    width: 100%;
    box-sizing: border-box;
    padding: 8px;
    border: 1px solid #ccc;
    border-radius: 4px;
}

.input-with-button {
    display: flex;
}
.input-with-button input {
    flex-grow: 1;
    border-top-right-radius: 0;
    border-bottom-right-radius: 0;
}
.input-with-button button {
    border-top-left-radius: 0;
    border-bottom-left-radius: 0;
    border: 1px solid #ccc;
    background: #f0f0f0;
    cursor: pointer;
    padding: 0 12px;
}
.input-with-button button:hover {
    background: #e0e0e0;
}

#custom-labels {
    margin-top: 15px;
    margin-bottom: 15px;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(60px, 1fr));
    gap: 8px;
}
#custom-labels input {
    width: 100%;
    box-sizing: border-box;
    padding: 8px;
    border: 1px solid #ccc;
    border-radius: 4px;
    text-align: center;
    font-size: 14px;
}


/* 6. Figure Tabs */
#figure-tabs-container {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
    width: 100%; /* Take full width of parent */
    max-width: 1200px; /* Limit maximum width */
}

#figure-tabs {
    display: flex;
    flex-grow: 1;
    gap: 2px;
}

.figure-tab {
    padding: 10px 15px;
    cursor: pointer;
    border: 1px solid #ccc;
    border-bottom: none;
    border-radius: 8px 8px 0 0;
    background-color: #e9ecef;
    position: relative;
    display: flex;
    align-items: center;
}

.figure-tab.active {
    background-color: white;
    font-weight: bold;
}

/* Delete Last Figure Modal */
.delete-last-figure-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 10000;
    overflow: hidden; /* Prevent scrollbars on modal container */
}

.delete-last-figure-modal .modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    box-sizing: border-box;
    overflow: hidden; /* Prevent scrollbars on overlay */
}

.delete-last-figure-modal .modal-content {
    background: white;
    padding: 32px;
    border-radius: 16px;
    width: 100%;
    max-width: 520px;
    height: auto;
    min-height: auto;
    max-height: none; /* Remove height constraints */
    box-shadow: 0 12px 48px rgba(0, 0, 0, 0.4);
    position: relative;
    overflow: visible; /* Ensure content is not clipped */
    border: 1px solid #e2e8f0;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.delete-last-figure-modal h3 {
    margin: 0 0 16px 0;
    color: #2c3e50;
    font-size: 22px;
    font-weight: 700;
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
}

.delete-last-figure-modal h3::before {
    content: "⚠️";
    font-size: 24px;
}

.delete-last-figure-modal p {
    margin: 0 0 32px 0;
    color: #556573;
    line-height: 1.6;
    font-size: 16px;
    text-align: center;
    padding: 0;
    width: 100%;
    max-width: 100%;
}

.delete-last-figure-modal .modal-buttons {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: nowrap; /* Keep buttons on same line */
    align-items: center;
}

.delete-last-figure-modal .btn-primary {
    background: linear-gradient(145deg, #28a745, #1e7e34);
    color: white;
    border: none;
    padding: 14px 24px;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    font-size: 15px;
    min-width: 140px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(40, 167, 69, 0.3);
    white-space: nowrap;
}

.delete-last-figure-modal .btn-primary:hover {
    background: linear-gradient(145deg, #34ce57, #28a745);
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(40, 167, 69, 0.4);
}

.delete-last-figure-modal .btn-secondary {
    background: linear-gradient(145deg, #dc3545, #c82333);
    color: white;
    border: none;
    padding: 14px 24px;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    font-size: 15px;
    min-width: 140px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(220, 53, 69, 0.3);
    white-space: nowrap;
}

.delete-last-figure-modal .btn-secondary:hover {
    background: linear-gradient(145deg, #e85563, #dc3545);
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(220, 53, 69, 0.4);
}

.delete-last-figure-modal .btn-cancel {
    background: linear-gradient(145deg, #f8f9fa, #e9ecef);
    color: #495057;
    border: 2px solid #ced4da;
    padding: 12px 24px;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    font-size: 15px;
    min-width: 100px;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.delete-last-figure-modal .btn-cancel:hover {
    background: linear-gradient(145deg, #e9ecef, #dee2e6);
    border-color: #adb5bd;
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

/* Improved mobile responsiveness */
@media (max-width: 600px) {
    .delete-last-figure-modal .modal-overlay {
        padding: 16px;
    }

    .delete-last-figure-modal .modal-content {
        padding: 24px 20px;
        max-width: 100%;
        border-radius: 12px;
    }

    .delete-last-figure-modal h3 {
        font-size: 20px;
        margin-bottom: 12px;
    }

    .delete-last-figure-modal p {
        font-size: 15px;
        margin-bottom: 24px;
        padding: 0;
    }

    .delete-last-figure-modal .modal-buttons {
        flex-direction: column;
        gap: 12px;
        align-items: stretch;
    }

    .delete-last-figure-modal .btn-primary,
    .delete-last-figure-modal .btn-secondary,
    .delete-last-figure-modal .btn-cancel {
        width: 100%;
        min-width: auto;
        padding: 16px 20px;
        font-size: 16px;
    }
}

@media (max-width: 400px) {
    .delete-last-figure-modal .modal-overlay {
        padding: 12px;
    }

    .delete-last-figure-modal .modal-content {
        padding: 20px 16px;
    }
}

#add-figure-btn {
    font-size: 20px;
    font-weight: bold;
    padding: 5px 12px;
    background-color: #28a745;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    margin-left: 10px;
}
#add-figure-btn:hover {
    background-color: #1e7e34;
}

.delete-tab-btn {
    background: none; border: none; color: #aaa;
    font-weight: bold; font-size: 16px; margin-left: 10px;
    cursor: pointer; padding: 0 5px; border-radius: 50%;
}
.delete-tab-btn:hover { background-color: #ddd; color: #333; }


/* 7. Upload Area & Canvas */
#upload-area {
    border: 2px dashed #3498db;
    border-radius: 8px;
    padding: 50px;
    text-align: center;
    cursor: pointer;
    background-color: #f0f8ff;
    margin-bottom: 20px;
    width: 100%;
    max-width: 100%;
    margin-left: auto;
    margin-right: auto;
    box-sizing: border-box;
}
#upload-area p { color: #3498db; margin: 0; }
#upload-area:hover { background-color: #d0ebff; }

#figure-canvas-container {
    background-color: #777;
    border: 1px solid #ccc;
    min-height: 400px;
    position: relative;
    padding: 0;
    border-radius: 8px;
    overflow: auto;
    transition: width 0.15s ease, height 0.15s ease;
    margin: 0 auto;
    box-sizing: border-box;
}

#figure-canvas-container.auto-size {
    width: 100% !important;
    min-width: 0 !important;
    max-width: 100vw !important;
    min-height: 400px;
    box-sizing: border-box;
}

#figure-canvas-container.small-size {
    width: 600px;
    height: 450px;
}

#figure-canvas-container.medium-size {
    width: 800px;
    height: 600px;
}

#figure-canvas-container.large-size {
    width: 1000px;
    height: 750px;
}

#figure-canvas-container.custom-size {
    width: 800px;
    height: 600px;
}
#figure-canvas { 
    display: block; 
    max-width: 100%; 
    background-color: white;
    border-radius: 4px;
}

/* 8. Buttons */
button, .button-like-label {
    border-radius: 5px;
    border: 1px solid #ccc;
    padding: 10px 15px;
    cursor: pointer;
    transition: background-color 0.2s, transform 0.2s;
    font-size: 14px;
}
button:disabled {
    background-color: #e9ecef !important;
    cursor: not-allowed !important;
    color: #6c757d !important;
    border-color: #e9ecef !important;
}

#save-project-btn, #apply-edit-btn {
    background: linear-gradient(135deg, #28a745 60%, #218838 100%);
    color: white;
    border: none;
    box-shadow: 0 2px 8px rgba(40, 167, 69, 0.15);
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}
#save-project-btn:hover, #apply-edit-btn:hover {
    background: linear-gradient(135deg, #34ce57 60%, #28a745 100%);
    box-shadow: 0 4px 16px rgba(40, 167, 69, 0.25);
    color: white;
    transform: translateY(-2px) scale(1.02);
}

/* FAQ and Easypubplot buttons - Blue */
.button-like-label {
    background: linear-gradient(135deg, #007bff 60%, #0056b3 100%);
    color: white;
    border: none;
    box-shadow: 0 2px 8px rgba(0, 123, 255, 0.15);
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}
.button-like-label:hover {
    background: linear-gradient(135deg, #339cff 60%, #007bff 100%);
    box-shadow: 0 4px 16px rgba(0, 123, 255, 0.25);
    color: white;
    transform: translateY(-2px) scale(1.02);
}

/* Load Project button - Green */
#load-project-btn {
    background: linear-gradient(135deg, #28a745 60%, #218838 100%) !important;
    color: white !important;
    border: none !important;
    box-shadow: 0 2px 8px rgba(40, 167, 69, 0.15) !important;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1) !important;
}
#load-project-btn:hover {
    background: linear-gradient(135deg, #34ce57 60%, #28a745 100%) !important;
    box-shadow: 0 4px 16px rgba(40, 167, 69, 0.25) !important;
    color: white !important;
    transform: translateY(-2px) scale(1.02) !important;
}

/* Zoom controls - Blue initially */
#zoom-in-btn, #zoom-out-btn, #zoom-reset-btn {
    background: linear-gradient(135deg, #007bff 60%, #0056b3 100%) !important;
    color: white !important;
    border: none !important;
    box-shadow: 0 2px 8px rgba(0, 123, 255, 0.15) !important;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1) !important;
}
#zoom-in-btn:hover, #zoom-out-btn:hover, #zoom-reset-btn:hover {
    background: linear-gradient(135deg, #339cff 60%, #007bff 100%) !important;
    box-shadow: 0 4px 16px rgba(0, 123, 255, 0.25) !important;
    color: white !important;
    transform: translateY(-2px) scale(1.02) !important;
}

/* Save/Clear Legend buttons - Green/Red initially */
#save-caption-btn {
    background: linear-gradient(135deg, #28a745 60%, #218838 100%) !important;
    color: white !important;
    border: none !important;
    box-shadow: 0 2px 8px rgba(40, 167, 69, 0.15) !important;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1) !important;
}
#save-caption-btn:hover {
    background: linear-gradient(135deg, #34ce57 60%, #28a745 100%) !important;
    box-shadow: 0 4px 16px rgba(40, 167, 69, 0.25) !important;
    color: white !important;
    transform: translateY(-2px) scale(1.02) !important;
}

#clear-caption-btn {
    background: linear-gradient(135deg, #dc3545 60%, #c82333 100%) !important;
    color: white !important;
    border: none !important;
    box-shadow: 0 2px 8px rgba(220, 53, 69, 0.15) !important;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1) !important;
}
#clear-caption-btn:hover {
    background: linear-gradient(135deg, #e85563 60%, #dc3545 100%) !important;
    box-shadow: 0 4px 16px rgba(220, 53, 69, 0.25) !important;
    color: white !important;
    transform: translateY(-2px) scale(1.02) !important;
}

#undo-btn, #redo-btn {
    background: linear-gradient(135deg, #6f42c1 60%, #5a32a3 100%);
    color: white;
    border: none;
    box-shadow: 0 2px 8px rgba(111, 66, 193, 0.15);
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}
#undo-btn:hover, #redo-btn:hover {
    background: linear-gradient(135deg, #7c4dff 60%, #6f42c1 100%);
    box-shadow: 0 4px 16px rgba(111, 66, 193, 0.25);
    color: white;
    transform: translateY(-2px) scale(1.02);
}
#undo-btn:disabled, #redo-btn:disabled {
    background-color: #e9ecef !important;
    color: #6c757d !important;
    border-color: #e9ecef !important;
    cursor: not-allowed !important;
}
#undo-btn:disabled:hover, #redo-btn:disabled:hover {
    background-color: #e9ecef !important;
    color: #6c757d !important;
    border-color: #e9ecef !important;
}

#reset-all-btn {
    background: linear-gradient(135deg, #dc3545 60%, #c82333 100%);
    color: white;
    border: none;
    box-shadow: 0 2px 8px rgba(220, 53, 69, 0.15);
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}
#reset-all-btn:hover {
    background: linear-gradient(135deg, #e85563 60%, #dc3545 100%);
    box-shadow: 0 4px 16px rgba(220, 53, 69, 0.25);
    color: white;
    transform: translateY(-2px) scale(1.02);
}

#add-panels-btn {
    background-color: #6c757d;
    color: white;
    border-color: #6c757d;
}
#add-panels-btn:hover {
    background-color: #5a6268;
}

#layout-options {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    margin-bottom: 20px;
}
.layout-btn {
    background-color: #f8f9fa;
    border: 1px solid #ccc;
    color: #333;
    padding: 10px 15px;
    font-size: 14px;
    transition: all 0.2s ease;
    cursor: pointer;
    position: relative;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

/* Panel Feedback Group Styling */
.panel-feedback-group {
    list-style-type: none;
    padding: 12px 15px;
    margin: 10px 0;
    border-radius: 6px;
    border-left: 4px solid transparent;
    margin-left: 0;
    padding-left: 0;
    display: block;
    overflow: hidden;
}

/* Panel-specific background colors */
.panel-color-0 {
    background-color: #f0f8ff;
    border-left-color: #4a90e2;
}

.panel-color-1 {
    background-color: #f0fff0;
    border-left-color: #32cd32;
}

.panel-color-2 {
    background-color: #fff5ee;
    border-left-color: #ff7f50;
}

.panel-color-3 {
    background-color: #f5f0ff;
    border-left-color: #9370db;
}

.panel-color-4 {
    background-color: #fffacd;
    border-left-color: #ffd700;
}

.panel-color-5 {
    background-color: #ffe4e1;
    border-left-color: #ff69b4;
}

/* Ensure nested li elements maintain their original styling but with transparent backgrounds */
.panel-feedback-group li {
    margin-bottom: 6px;
    padding: 10px 12px;
    border-radius: 5px;
    border: 1px solid transparent;
    font-size: 14px;
    background-color: transparent !important;
}

.panel-feedback-group li:last-child {
    margin-bottom: 0;
}

/* Force transparent backgrounds for all feedback items to show panel group color */
.panel-feedback-group li.good { 
    color: #155724; 
    background-color: transparent !important; 
    border-color: #c3e6cb; 
}

.panel-feedback-group li.warning { 
    color: #856404; 
    background-color: transparent !important; 
    border-color: #ffeeba; 
}

.panel-feedback-group li.error { 
    color: #721c24; 
    background-color: transparent !important; 
    border-color: #f5c6cb; 
}

.panel-feedback-group li.info { 
    color: #0c5460; 
    background-color: transparent !important; 
    border-color: #bee5eb; 
}

.layout-btn:hover {
    background-color: #e9ecef;
    transform: translateY(-1px);
    box-shadow: 0 3px 6px rgba(0, 0, 0, 0.15);
}

.layout-btn:active, .layout-btn.pressed {
    transform: translateY(1px);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
    background-color: #dee2e6;
}

.layout-btn.selected {
    background-color: #007bff;
    color: white;
    border-color: #007bff;
    box-shadow: 0 2px 6px rgba(0, 123, 255, 0.3);
}

.layout-btn.selected:hover {
    background-color: #0056b3;
    border-color: #0056b3;
}

.layout-btn.selected:active, .layout-btn.selected.pressed {
    background-color: #004085;
    transform: translateY(1px);
    box-shadow: 0 1px 3px rgba(0, 123, 255, 0.4);
}

.smart-layout-btn { 
    grid-column: span 2; 
    margin-bottom: 10px;
    border-bottom: 2px solid #e2e8f0;
    padding-bottom: 15px;
    font-weight: 600;
}

.smart-layout-btn.selected {
    background-color: #007bff;
    color: white;
    border-color: #007bff;
}

.smart-layout-btn:hover {
    background-color: #e9ecef;
    transform: translateY(-1px);
    box-shadow: 0 3px 6px rgba(0, 0, 0, 0.15);
}

.smart-layout-btn.selected:hover {
    background-color: #0056b3;
    border-color: #0056b3;
}

.layout-btn:last-child { 
    grid-column: span 2; 
    margin-top: 10px;
    border-top: 2px solid #e2e8f0;
    padding-top: 15px;
}

#export-options-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    margin-top: 15px;
}

.export-option-card {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease-in-out;
}

.export-option-card:hover {
    border-color: #007bff;
    background-color: #f0f8ff;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.05);
}

.export-option-card .material-symbols-outlined {
    font-size: 32px;
    padding: 4px;
    border-radius: 4px;
    color: white;
}

.export-option-card .icon-tiff { background-color: #007bff; }
.export-option-card .icon-pdf { background-color: #dc3545; }
.export-option-card .icon-png { background-color: #28a745; }
.export-option-card .icon-jpeg { background-color: #fd7e14; }

.export-text { line-height: 1.3; }
.export-title { font-weight: bold; }
.export-desc { font-size: 12px; color: #6c757d; }

/* 9. Quality Advisor & Misc */
#feedback-list {
    list-style-type: none;
    padding-left: 0;
    margin: 0;
}
#feedback-list li {
    padding: 10px 12px;
    border-radius: 5px;
    margin-bottom: 6px;
    border: 1px solid transparent;
    font-size: 14px;
}

/* For top-level messages that are not within panel groups, keep their backgrounds */
#feedback-list > li.good { color: #155724; background-color: #d4edda; border-color: #c3e6cb; }
#feedback-list > li.warning { color: #856404; background-color: #fff3cd; border-color: #ffeeba; }
#feedback-list > li.error { color: #721c24; background-color: #f8d7da; border-color: #f5c6cb; }
#feedback-list > li.info { color: #0c5460; background-color: #d1ecf1; border-color: #bee5eb; }

.hidden { display: none !important; }

.hidden-by-default { display: none; }

#individual-export-container.has-content { display: block !important; }
.individual-export-btn {
    color: white; border-radius: 5px; border: none;
    padding: 8px 12px; cursor: pointer;
    font-size: 14px; width: 100%; margin-top: 5px;
    display: inline-flex; align-items: center; justify-content: center;
}

#main-content > #quality-feedback { margin-top: 20px; }

.main-content-card {
    background-color: white;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
    border-radius: 8px;
    border: 1px solid #e2e8f0;
    margin: 20px 0;
    width: 100%; /* Take full width of parent */
    max-width: 1200px; /* Limit maximum width */
}

.main-content-card .card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 25px; /* Increased horizontal padding */
    cursor: pointer;
    border-bottom: 1px solid #eee;
}

.main-content-card .card-header h3 {
    margin: 0 10px 0 0; /* Add right margin to prevent overlap with collapse arrow */
    font-size: 16px;
    flex: 1; /* Allow title to take available space */
    word-wrap: break-word; /* Handle long titles gracefully */
}

.main-content-card .card-content {
    padding: 20px;
    transition: all 0.2s ease;
}

.main-content-card.collapsed .card-content {
    display: none;
}

.main-content-card.collapsed .collapse-arrow {
    transform: rotate(-90deg);
}

#canvas-actions {
    margin: 15px 0;
    display: flex;
    gap: 10px;
    align-items: center;
    flex-wrap: wrap;
    width: 100%;
    max-width: 100%;
    margin-left: auto;
    margin-right: auto;
}

#zoom-controls {
    display: flex;
    gap: 8px;
    align-items: center;
    margin-left: auto;
}

#zoom-level {
    font-weight: bold;
    min-width: 50px;
    text-align: center;
}

#container-controls {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-left: auto;
}

.container-size-controls {
    display: flex;
    align-items: center;
    gap: 10px;
}

.container-size-controls label {
    font-size: 14px;
    font-weight: 500;
    color: #2c3e50;
    white-space: nowrap;
}

.container-size-controls select {
    padding: 8px 12px;
    border: 1px solid #ccc;
    border-radius: 5px;
    font-size: 14px;
    background-color: white;
    cursor: pointer;
    min-width: 150px;
}

.container-size-controls select:focus {
    outline: none;
    border-color: #007bff;
    box-shadow: 0 0 0 2px rgba(0, 123, 255, 0.25);
}

#custom-size-controls {
    background-color: #f8f9fa;
    border: 1px solid #e9ecef;
    border-radius: 6px;
    padding: 12px;
}

.custom-size-inputs {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.custom-size-inputs label {
    font-size: 13px;
    font-weight: 500;
    color: #495057;
    white-space: nowrap;
}

.custom-size-inputs input {
    width: 80px;
    padding: 6px 8px;
    border: 1px solid #ced4da;
    border-radius: 4px;
    font-size: 13px;
    text-align: center;
}

.custom-size-inputs input:focus {
    outline: none;
    border-color: #007bff;
    box-shadow: 0 0 0 2px rgba(0, 123, 255, 0.25);
}

#apply-custom-size-btn {
    padding: 6px 12px;
    font-size: 13px;
    background-color: #007bff;
    color: white;
    border: 1px solid #007bff;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.2s;
}

#apply-custom-size-btn:hover {
    background-color: #0056b3;
}

/* Responsive adjustments for container controls */
@media (max-width: 768px) {
    #container-controls {
        margin-left: 0;
        width: 100%;
    }

    .custom-size-inputs {
        flex-direction: column;
        align-items: stretch;
    }

    .custom-size-inputs input {
        width: 100%;
    }

    .container-size-controls {
        flex-direction: column;
        align-items: stretch;
        gap: 8px;
    }

    .container-size-controls select {
        min-width: 100%;
    }
}

@media (max-width: 480px) {
    #canvas-actions {
        flex-direction: column;
        align-items: stretch;
    }

    #zoom-controls {
        margin-left: 0;
        justify-content: center;
    }

    #container-controls {
        margin-left: 0;
    }
}



#main-footer {
    text-align: center;
    margin-top: 50px;
    padding-top: 20px;
    border-top: 1px solid #e0e0e0;
}
#main-footer a {
    color: #555;
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s;
}
#main-footer a:hover {
    color: #007bff;
    text-decoration: underline;
}

/* 10. Loading Spinner */
.spinner {
    display: inline-block;
    width: 12px;
    height: 12px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: #fff;
    animation: spin 0.8s ease-in-out infinite;
    margin-left: 8px;
}

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

/* Dark spinner for light backgrounds */
.spinner.dark {
    border-color: rgba(0, 0, 0, 0.3);
    border-top-color: #333;
}

/* Export button styling */
#export-figure-btn {
    width: 100%;
    margin-top: 15px;
    padding: 12px 20px;
    background-color: #28a745;
    color: white;
    border: none;
    border-radius: 6px;
    font-weight: 600;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.2s ease;
}

#export-figure-btn:hover:not(:disabled) {
    background-color: #218838;
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(40, 167, 69, 0.3);
}

#export-figure-btn:disabled {
    background-color: #6c757d;
    cursor: not-allowed;
    opacity: 0.6;
    transform: none;
    box-shadow: none;
}

/* Export format selection styling */
.export-option-card.active-selection {
    border-color: #007bff;
    background-color: #e3f2fd;
    box-shadow: 0 2px 8px rgba(0, 123, 255, 0.2);
}

/* Label spacing control styling */
.label-spacing-control {
    margin-bottom: 15px;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    padding: 15px;
    background-color: #f9f9f9;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    transition: background-color 0.3s, box-shadow 0.3s;
}

.label-spacing-control:hover {
    background-color: #f1f1f1;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.08);
}

.label-spacing-input-group {
    display: flex;
    align-items: center;
    gap: 8px;
    justify-content: center;
    position: relative;
}

.label-spacing-input-group::after {
    content: "px";
    position: absolute;
    right: 44px;
    top: 50%;
    transform: translateY(-50%);
    color: #6c757d;
    font-size: 12px;
    pointer-events: none;
}

#label-spacing-number {
    width: 60px;
    text-align: center;
    padding: 8px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-weight: 500;
    -moz-appearance: textfield;
}

#label-spacing-number::-webkit-outer-spin-button,
#label-spacing-number::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

#label-spacing-value {
    font-weight: 600;
    color: #007bff;
}

/* 11. Panel List Management */
#panel-list-container, #panel-list-container-main {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    max-height: none;
    overflow: visible;
    justify-content: center;
}

.panel-list-item {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 8px 12px;
    background-color: #f8f9fa;
    border: 1px solid #e9ecef;
    border-radius: 4px;
    cursor: grab;
    transition: all 0.2s ease;
    user-select: none;
    min-width: 60px;
    flex-direction: column;
    text-align: center;
    gap: 4px;
}

.panel-list-item:hover {
    background-color: #e9ecef;
    border-color: #ced4da;
}

.panel-list-item.dragging {
    opacity: 0.5;
    cursor: grabbing;
}

.panel-list-item.drag-over {
    border-color: #007bff;
    background-color: #e3f2fd;
}

.panel-info {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.panel-thumbnail {
    width: 32px;
    height: 32px;
    border-radius: 2px;
    border: 1px solid #ddd;
    object-fit: cover;
}

.panel-label {
    font-weight: 500;
    font-size: 12px;
}

.panel-actions {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-top: 4px;
}

.panel-delete-btn {
    background: linear-gradient(145deg, #dc3545, #c82333);
    border: none;
    color: white;
    cursor: pointer;
    padding: 4px 6px;
    border-radius: 4px;
    font-size: 16px;
    line-height: 1;
    transition: all 0.2s ease;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 4px rgba(220, 53, 69, 0.3);
    border-bottom: 2px solid #bd2130;
}

.panel-edit-btn {
    background: linear-gradient(145deg, #007bff, #0056b3);
    border: none;
    color: white;
    cursor: pointer;
    padding: 4px 6px;
    border-radius: 4px;
    font-size: 14px;
    line-height: 1;
    transition: all 0.2s ease;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 4px rgba(0, 123, 255, 0.3);
    border-bottom: 2px solid #0056b3;
}

.panel-edit-btn:hover {
    background: linear-gradient(145deg, #0069d9, #007bff);
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(0, 123, 255, 0.4);
}

.panel-edit-btn:active {
    transform: translateY(1px);
    box-shadow: 0 1px 2px rgba(0, 123, 255, 0.3);
    background: linear-gradient(145deg, #0056b3, #004085);
}

.panel-edit-btn .material-symbols-outlined {
    font-size: 14px;
}

.panel-delete-btn:hover {
    background: linear-gradient(145deg, #e85563, #dc3545);
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(220, 53, 69, 0.4);
}

.panel-delete-btn:active {
    transform: translateY(1px);
    box-shadow: 0 1px 2px rgba(220, 53, 69, 0.3);
    background: linear-gradient(145deg, #bd2130, #a71e2a);
}

.panel-drag-handle {
    color: #6c757d;
    cursor: grab;
}

/* 12. Context Menu */
.context-menu {
    position: fixed;
    background-color: white;
    border: 1px solid #ccc;
    border-radius: 4px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
    z-index: 1001;
    display: none;
    min-width: 140px;
}

.context-menu-item {
    padding: 8px 12px;
    cursor: pointer;
    font-size: 14px;
    transition: background-color 0.2s;
}

.context-menu-item:hover {
    background-color: #f8f9fa;
}

.context-menu-item:first-child {
    border-radius: 4px 4px 0 0;
}

.context-menu-item:last-child {
    border-radius: 0 0 4px 4px;
}

/* 13. Figure Caption Editor */
#figure-caption-editor {
    width: 100%;
    min-height: 80px;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-family: inherit;
    font-size: 14px;
    line-height: 1.4;
    resize: vertical;
    margin-bottom: 15px;
    box-sizing: border-box;
}

#figure-caption-editor:focus {
    outline: none;
    border-color: #007bff;
    box-shadow: 0 0 0 2px rgba(0,123,255,0.25);
}

.figure-caption-actions {
    display: flex;
    gap: 12px;
    justify-content: flex-end;
    margin-top: 10px;
}

/* 3D Button Styles */

/* Modern unified button style */
.btn {
    border-radius: 6px;
    border: none;
    padding: 10px 20px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.18s, box-shadow 0.18s, transform 0.15s;
    text-transform: none;
    letter-spacing: 0.2px;
    min-width: 120px;
    text-align: center;
    box-shadow: 0 2px 8px rgba(80, 80, 120, 0.08);
    background: #f4f4f8;
    color: #333;
    outline: none;
    margin: 0 2px;
}
.btn:active {
    transform: translateY(1px);
    box-shadow: 0 1px 2px rgba(80, 80, 120, 0.10);
}
.btn-secondary {
    background: linear-gradient(135deg, #6f42c1 60%, #5a32a3 100%);
    color: #fff;
    border: none;
    box-shadow: 0 2px 8px rgba(111, 66, 193, 0.10);
}
.btn-secondary:hover, .btn-secondary:focus {
    background: linear-gradient(135deg, #7c4dff 60%, #6f42c1 100%);
    box-shadow: 0 4px 16px rgba(111, 66, 193, 0.18);
    color: #fff;
    transform: translateY(-1px) scale(1.03);
}
.btn-secondary:active {
    background: linear-gradient(135deg, #5a32a3 60%, #4b277e 100%);
    color: #fff;
    box-shadow: 0 1px 2px rgba(111, 66, 193, 0.10);
}

/* 15. Journal Info Display */
.journal-info {
    margin-top: 15px;
    padding: 12px;
    background-color: #f8f9fa;
    border: 1px solid #e9ecef;
    border-radius: 4px;
    font-size: 13px;
    line-height: 1.4;
    color: #495057;
}

.journal-info:empty {
    display: none;
}

.journal-info h5 {
    margin: 0 0 8px 0;
    font-size: 14px;
    font-weight: 600;
    color: #343a40;
}

.journal-info ul {
    margin: 0;
    padding-left: 16px;
}

.journal-info li {
    margin-bottom: 4px;
}

.journal-info .journal-spec {
    font-weight: 500;
    color: #007bff;
}

.journal-info .journal-note {
    font-size: 12px;
    color: #6c757d;
    font-style: italic;
    margin-left: 8px;
}

/* 14. Enhanced Zoom Controls */
#fit-to-page-btn {
    background: linear-gradient(135deg, #007bff 60%, #0056b3 100%);
    color: white;
    border: none;
    box-shadow: 0 2px 8px rgba(0, 123, 255, 0.15);
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

#fit-to-page-btn:hover {
    background: linear-gradient(135deg, #339cff 60%, #007bff 100%);
    box-shadow: 0 4px 16px rgba(0, 123, 255, 0.25);
    color: white;
    transform: translateY(-2px) scale(1.02);
}

/* 16. Feedback Modal Styling */
#feedback-modal .modal-overlay {
    background-color: rgba(0, 0, 0, 0.7);
    z-index: 10001;
}

.feedback-modal-content {
    background: white;
    border-radius: 16px;
    padding: 0;
    width: 100%;
    max-width: 480px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    position: relative;
    overflow: hidden;
    border: 1px solid #e2e8f0;
}

.feedback-header {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    padding: 24px 32px;
    border-bottom: 1px solid #e2e8f0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.feedback-header h3 {
    margin: 0;
    color: #2c3e50;
    font-size: 22px;
    font-weight: 700;
}

.feedback-close {
    background: none;
    border: none;
    font-size: 24px;
    color: #6c757d;
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
    transition: all 0.2s ease;
    line-height: 1;
}

.feedback-close:hover {
    background-color: #f8f9fa;
    color: #333;
}

.feedback-body {
    padding: 32px;
}

.rating-section {
    margin-bottom: 24px;
    text-align: center;
}

.emoji-rating {
    display: flex;
    justify-content: space-between;
    gap: 8px;
    margin: 16px 0;
}

.emoji-btn {
    background: none;
    border: 2px solid transparent;
    border-radius: 50%;
    width: 60px;
    height: 60px;
    font-size: 32px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.emoji-btn:hover {
    background-color: #f8f9fa;
    border-color: #007bff;
    transform: scale(1.1);
}

.emoji-btn.selected {
    background-color: #e3f2fd;
    border-color: #007bff;
    transform: scale(1.15);
    box-shadow: 0 4px 12px rgba(0, 123, 255, 0.3);
}

.feedback-form {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

#feedback-text {
    width: 100%;
    min-height: 100px;
    padding: 12px;
    border: 2px solid #e2e8f0;
    border-radius: 8px;
    font-family: inherit;
    font-size: 14px;
    line-height: 1.5;
    resize: vertical;
    transition: border-color 0.3s ease;
    box-sizing: border-box;
}

#feedback-text:focus {
    outline: none;
    border-color: #007bff;
    box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.1);
}

.feedback-submit-btn {
    background: linear-gradient(145deg, #28a745, #218838);
    color: white;
    border: none;
    border-radius: 8px;
    padding: 14px 28px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    box-shadow: 0 4px 12px rgba(40, 167, 69, 0.3);
    border-bottom: 3px solid #1e7e34;
    position: relative;
    min-height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.feedback-submit-btn:hover {
    background: linear-gradient(145deg, #34ce57, #28a745);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(40, 167, 69, 0.4);
}

.feedback-submit-btn:active {
    transform: translateY(0);
    box-shadow: 0 4px 8px rgba(40, 167, 69, 0.3);
}

.feedback-submit-btn:disabled {
    background: linear-gradient(145deg, #6c757d, #5a6268);
    border-bottom-color: #495057;
    cursor: not-allowed;
    transform: none;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

/* Mobile responsiveness */
@media (max-width: 600px) {
    .feedback-modal-content {
        max-width: 95vw;
        margin: 20px;
    }

    .feedback-header {
        padding: 20px 24px;
    }

    .feedback-body {
        padding: 24px;
    }

    .emoji-rating {
        gap: 4px;
    }

    .emoji-btn {
        width: 50px;
        height: 50px;
        font-size: 24px;
    }
}

/* Smart Layout Loading Modal */
.smart-layout-modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(4px);
}

.smart-layout-modal-content {
    background: linear-gradient(145deg, #ffffff, #f8f9fa);
    border-radius: 20px;
    padding: 40px 50px;
    text-align: center;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    border: 1px solid #e2e8f0;
    max-width: 450px;
    width: 90%;
    position: relative;
    overflow: hidden;
}

.smart-layout-modal-content::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 123, 255, 0.1), transparent);
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% { left: -100%; }
    100% { left: 100%; }
}

.smart-layout-spinner {
    width: 60px;
    height: 60px;
    border: 4px solid #e9ecef;
    border-top: 4px solid #007bff;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 25px auto;
    position: relative;
}

.smart-layout-spinner::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 30px;
    height: 30px;
    border: 2px solid transparent;
    border-top: 2px solid #28a745;
    border-radius: 50%;
    transform: translate(-50%, -50%);
    animation: spin 0.5s linear infinite reverse;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.smart-layout-main-message {
    margin: 0 0 15px 0;
    color: #2c3e50;
    font-size: 24px;
    font-weight: 700;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
    background: linear-gradient(135deg, #007bff, #0056b3);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.smart-layout-sub-message {
    margin: 0;
    color: #6c757d;
    font-size: 16px;
    font-weight: 500;
    line-height: 1.4;
    opacity: 0.9;
}

/* Pulsing effect for enhanced visual appeal */
.smart-layout-modal-content {
    animation: modalPulse 3s ease-in-out infinite;
}

@keyframes modalPulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.02); }
}

/* Responsive adjustments */
@media (max-width: 600px) {
    .smart-layout-modal-content {
        padding: 30px 25px;
        border-radius: 16px;
    }

    .smart-layout-spinner {
        width: 50px;
        height: 50px;
        margin-bottom: 20px;
    }

    .smart-layout-main-message {
        font-size: 20px;
        margin-bottom: 12px;
    }

    .smart-layout-sub-message {
        font-size: 14px;
    }
}

/* 17. Edit Modal Styling */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    width: 95vw;
    height: 95vh;
    max-width: 1400px;
    max-height: 90vh;
    min-height: 0;
    display: grid;
    grid-template-columns: 2fr 1fr;
    position: relative;
    padding: 16px;
    box-sizing: border-box;
    overflow: hidden; /* Prevent modal content from scrolling */
}

.edit-controls {
    min-width: 200px;
    flex: 1 1 0;
    min-height: 0;
    max-height: 100%; /* Use full height of parent */
    overflow-y: scroll !important; /* Force scrollbar to always be visible */
    overflow-x: hidden;
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    height: 100%;
    /* Firefox scrollbar styling */
    scrollbar-width: thin;
    scrollbar-color: #94a3b8 #f1f5f9;
    /* Ensure scrollbar is always visible when content overflows */
    scrollbar-gutter: stable;
}

.accordion, .accordion-item, .accordion-header, .accordion-panel, .control-group {
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    margin: 0;
    padding-left: 0;
    padding-right: 0;
}

.accordion {
    margin-left: 0;
    margin-right: 0;
    margin-bottom: 12px;
    padding: 0;
}

.accordion-header {
    overflow-wrap: anywhere;
    word-break: break-word;
    padding: 12px 12px;
}

.edit-controls::-webkit-scrollbar {
    width: 16px; /* Make scrollbar wider for better visibility */
    background: #f1f5f9;
}

.edit-controls::-webkit-scrollbar-track {
    background: #e2e8f0; /* Darker track for better visibility */
    border-radius: 8px;
    margin: 4px 0;
    border: 1px solid #cbd5e1;
}

.edit-controls::-webkit-scrollbar-thumb {
    background: #475569; /* Much darker thumb for better visibility */
    border-radius: 8px;
    border: 2px solid #e2e8f0;
    min-height: 40px;
}

.edit-controls::-webkit-scrollbar-thumb:hover {
    background: #334155; /* Even darker on hover */
}

.edit-controls::-webkit-scrollbar-corner {
    background: #f1f5f9;
}

/* Ensure scrollbar is always visible */
.edit-controls::-webkit-scrollbar-thumb:active {
    background: #1e293b;
}

.edit-controls.collapsed {
    overflow: visible; /* Allow button to be visible */
}

.edit-controls.collapsed > *:not(.collapse-panel-btn):not(.resize-handle) {
    visibility: hidden; /* Hide content but preserve space */
}

/* Ensure the scrollable content area is properly defined */
.edit-controls > .sidebar-card {
    flex-shrink: 0;
    margin-bottom: 12px;
}

.edit-controls > .sidebar-card:last-child {
    margin-bottom: 0;
}

/* Add some minimum content to ensure scrolling works */
.edit-controls .card-content {
    min-height: 50px;
}

/* Ensure proper spacing for scrollable content */
.edit-controls .sidebar-card {
    margin-bottom: 16px;
}

.edit-controls .sidebar-card:last-child {
    margin-bottom: 0;
    padding-bottom: 16px; /* Add bottom padding to last card */
}

/* Force minimum height to ensure scrolling works */
.edit-controls {
    min-height: 600px; /* Force minimum height to ensure content overflows */
}

/* Ensure the modal content has proper height constraints */
.modal-content {
    height: 90vh !important; /* Force height */
    max-height: 90vh !important; /* Force max height */
}

/* Force scrollbar to always be visible - override any conflicting styles */
.edit-controls,
#edit-controls-panel,
.edit-controls[style*="overflow"],
div[id="edit-controls-panel"] {
    overflow-y: scroll !important;
    overflow-x: hidden !important;
}

/* Target the specific element by ID for maximum specificity */
#edit-controls-panel {
    overflow-y: scroll !important;
    overflow-x: hidden !important;
    scrollbar-width: thin !important;
    scrollbar-color: #475569 #e2e8f0 !important;
}

/* Ensure scrollbar is always visible regardless of content */
.edit-controls::-webkit-scrollbar {
    width: 16px !important; /* Make scrollbar wider for better visibility */
    background: #f1f5f9 !important;
    display: block !important;
}

.edit-controls::-webkit-scrollbar-track {
    background: #e2e8f0 !important; /* Darker track for better visibility */
    border-radius: 8px !important;
    margin: 4px 0 !important;
    border: 1px solid #cbd5e1 !important;
    display: block !important;
}

.edit-controls::-webkit-scrollbar-thumb {
    background: #475569 !important; /* Much darker thumb for better visibility */
    border-radius: 8px !important;
    border: 2px solid #e2e8f0 !important;
    min-height: 40px !important;
    display: block !important;
}

.edit-controls::-webkit-scrollbar-thumb:hover {
    background: #334155 !important; /* Even darker on hover */
}

.edit-controls::-webkit-scrollbar-corner {
    background: #f1f5f9 !important;
}

/* Ensure scrollbar is always visible */
.edit-controls::-webkit-scrollbar-thumb:active {
    background: #1e293b !important;
}

.edit-controls-header {
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: flex-end;
    gap: 18px;
    padding: 12px 24px 12px 35px;
    background: linear-gradient(90deg, #f8fafc 0%, #e9ecef 100%);
    border-radius: 8px 8px 0 0;
    box-shadow: 0 1px 2px rgba(0,0,0,0.03);
    margin-bottom: 8px;
    flex-shrink: 0;
    min-height: 56px;
    flex-wrap: wrap;
}

.edit-controls-header h3 {
    margin: 0;
    font-size: 1.6rem;
    font-weight: 700;
    line-height: 1.2;
    display: flex;
    align-items: center;
}

.modal-actions-top.sticky-actions {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 12px;
    margin-left: auto;
    flex-wrap: wrap;
    min-width: 0;
    justify-content: center;
    background: linear-gradient(90deg, #f8fafc 0%, #e9ecef 100%);
    border-radius: 8px;
    padding: 8px 0;
}

.modal-actions-top.sticky-actions button {
    min-width: 90px;
    font-size: 1rem;
    padding: 7px 14px;
    border-radius: 6px;
    margin: 0;
    flex-shrink: 1;
    max-width: 100%;
    overflow: hidden;
    text-overflow: ellipsis;
}

.collapse-panel-btn {
    position: absolute;
    left: -15px;
    top: 50%;
    transform: translateY(-50%);
    background: #ffffff;
    border: 1px solid #d1d5db;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    cursor: pointer;
    z-index: 10;
    padding: 4px;
    border-radius: 50%;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 30px;
    height: 30px;
}

.collapse-panel-btn:hover {
    background: #f0fdf4;
    border-color: #4ade80;
    transform: translateY(-50%) scale(1.1);
}

.collapse-panel-btn:focus {
    outline: 2px solid #3b82f6;
    outline-offset: 2px;
}

.edit-controls.collapsed .collapse-panel-btn {
    transform: translateY(-50%) rotate(180deg);
    left: -15px;
}

.resize-handle {
    position: absolute;
    left: 0;
    top: 0;
    width: 10px;
    height: 100%;
    cursor: ew-resize;
    z-index: 2;
    transition: background 0.2s;
}

.resize-handle:hover {
    background: rgba(59, 130, 246, 0.2);
}

.accordion {
    box-sizing: border-box;
    margin-left: 8px;
    margin-right: 8px;
    margin-bottom: 12px;
    padding-left: 0;
    padding-right: 0;
    width: auto;
    max-width: 100%;
}

.accordion-item {
    border-radius: 6px;
    margin-bottom: 8px;
    background: #fff;
    box-shadow: 0 1px 4px rgba(0,0,0,0.04);
    border: 1px solid #e2e8f0;
    overflow: hidden;
}

.accordion-header {
    width: 100%;
    background: none;
    border: none;
    text-align: left;
    padding: 12px 16px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    outline: none;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: background 0.2s;
}

.accordion-header:focus {
    background: #e9ecef;
    outline: 2px solid #007bff;
}

.accordion-header[aria-expanded="true"] {
    background: #f1f5f9;
}

.accordion-panel {
    padding: 14px 18px 10px 18px;
    display: block;
    animation: accordion-fade-in 0.3s;
}

.accordion-panel[hidden] {
    display: none;
}

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

/* Ensure all .control-group, .accordion-item, and .accordion-panel have box-sizing and margin */
.control-group, .accordion-item, .accordion-panel {
    box-sizing: border-box;
    margin-right: 0;
    margin-left: 0;
    max-width: 100%;
}

.accordion-item:first-child .accordion-header {
    background: #f1f5f9;
}

.accordion-item:first-child .accordion-panel {
    display: block !important;
}

.modal-left-column {
    display: flex;
    flex-direction: column;
    overflow: hidden; /* <--- ADDED */
    min-height: 0;
    height: 100%;
    flex: 1 1 0;
}

#edit-canvas-container {
    flex: 1 1 auto;
    min-height: 0;
    position: relative;
    overflow: hidden;
    background-color: #f8f9fa;
    border: 1px solid #ddd;
    border-radius: 4px;
}

#edit-canvas {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    max-width: 100%;
    max-height: 100%;
    padding: 10px;
    box-sizing: border-box;
    object-fit: contain;
}

#edit-modal-preview {
    position: relative;
    width: 100%;
    max-height: 160px;
    flex-shrink: 0;
    margin-top: 15px;
    background-color: white;
    box-shadow: 0 2px 8px rgba(0,0,0,0.15);
    border-radius: 6px;
    border: 1px solid #e2e8f0;
    transition: all 0.3s ease;
    overflow: hidden;
    user-select: none;
    display: flex;
    flex-direction: column;
}

#edit-modal-preview.expanded {
    max-height: 160px;
}

#edit-modal-preview.collapsed {
    height: 42px !important;
    min-height: 42px !important;
    max-height: 42px !important;
    overflow: hidden;
}

.edit-preview-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 6px 12px;
    border-bottom: 1px solid #e2e8f0;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border-radius: 6px 6px 0 0;
    box-shadow: 0 1px 2px rgba(0,0,0,0.05);
}

.edit-preview-header h4 {
    margin: 0;
    font-size: 12px;
    color: #333;
    flex: 1;
    font-weight: 600;
}

.edit-preview-content {
    padding: 8px;
    transition: all 0.3s ease;
    flex: 1 1 auto;
    display: flex;
    flex-direction: column;
    justify-content: center;
    min-height: 0;
}

#edit-modal-mini-preview-canvas {
    display: block;
    width: 100%;
    height: auto;
    max-width: 100%;
    max-height: 100%;
    flex: 1 1 auto;
    border: 1px solid #ddd;
    border-radius: 4px;
    background: white;
    margin: 0 auto;
    object-fit: contain;
}

@media (max-width: 1200px) {
    .modal-content {
        grid-template-columns: 1fr 320px;
        width: 98vw;
        height: 95vh;
    }
}

@media (max-width: 900px) {
    .modal-content {
        grid-template-columns: 1fr 300px;
        width: 98vw;
        height: 95vh;
    }
    .modal-left-column {
        padding: 15px;
    }
    .edit-controls {
        padding: 15px;
    }
}

@media (max-width: 768px) {
    .modal-content {
        grid-template-columns: 1fr;
        grid-template-rows: 1fr auto;
        width: 98vw;
        height: 95vh;
    }
    .modal-left-column {
        padding: 10px;
    }
    #edit-modal-preview {
        margin-top: 10px;
    }
    .edit-controls {
        padding: 10px;
        border-left: none;
        border-top: 3px solid #e2e8f0;
        box-shadow: inset 0 3px 6px rgba(0,0,0,0.08);
        max-height: 200px;
        overflow-y: auto;
    }
    .edit-controls::before {
        display: none;
    }
}

.edit-controls {
    padding: 20px;
    border-left: 3px solid #e2e8f0;
    background-color: #f8f9fa;
    overflow-y: auto;
    height: 100%;
    min-height: 0;
    box-shadow: inset 3px 0 6px rgba(0,0,0,0.08);
    position: relative;
}

.edit-controls::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(180deg, #e2e8f0 0%, #cbd5e0 50%, #e2e8f0 100%);
}

.edit-preview-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 2px 8px 2px 8px;
    border-bottom: 1px solid #e2e8f0;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border-radius: 6px 6px 0 0;
    box-shadow: 0 1px 2px rgba(0,0,0,0.05);
}

#edit-preview-toggle-btn {
    background: none;
    border: none;
    color: #6c757d;
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    z-index: 10;
}

#edit-preview-toggle-btn:hover {
    background-color: #f8f9fa;
    color: #333;
}

#edit-preview-toggle-btn:active {
    transform: scale(0.95);
}

#edit-preview-toggle-btn .material-symbols-outlined {
    font-size: 20px;
    transition: transform 0.3s ease;
}

#edit-modal-preview.expanded #edit-preview-toggle-btn .material-symbols-outlined {
    transform: rotate(180deg);
}

.edit-preview-info {
    font-size: 10px;
    color: #666;
    text-align: center;
    margin-top: 6px;
    line-height: 1.2;
}

.control-group {
    margin-bottom: 25px;
    padding-bottom: 20px;
    border-bottom: 1px solid #eee;
}

.control-group:last-child {
    border-bottom: none;
}

.control-group h4 {
    margin: 0 0 15px 0;
    font-size: 14px;
    font-weight: 600;
    color: #333;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.control-group .control-item {
    margin-bottom: 15px;
}

.control-group .control-item:last-child {
    margin-bottom: 0;
}

.tool-palette {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
    margin-bottom: 15px;
}

.tool-btn {
    padding: 10px;
    border: 1px solid #ddd;
    background-color: white;
    border-radius: 4px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

.tool-btn:hover {
    background-color: #f0f0f0;
    border-color: #007bff;
}

.tool-btn.active-tool {
    background-color: #007bff;
    color: white;
    border-color: #007bff;
}

.tool-btn .material-symbols-outlined {
    font-size: 18px;
}

.annotation-options {
    background-color: white;
    border: 1px solid #ddd;
    border-radius: 4px;
    padding: 12px;
    margin-top: 10px;
}

.font-style-btn {
    padding: 6px 10px;
    border: 1px solid #ddd;
    background-color: white;
    border-radius: 3px;
    cursor: pointer;
    font-weight: bold;
    transition: all 0.2s ease;
}

.font-style-btn:hover {
    background-color: #f0f0f0;
}

.font-style-btn.active {
    background-color: #007bff;
    color: white;
    border-color: #007bff;
}

.button-group {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.button-group button {
    flex: 1;
    min-width: 0;
    font-size: 12px;
    padding: 6px 10px;
    background-color: #f8f9fa;
    border: 1px solid #ccc;
    color: #333;
}

.button-group button:hover {
    background-color: #e9ecef;
}

.button-group button:active {
    background-color: #dee2e6;
}

/* Greyscale button styling to match other reset buttons */
#greyscale-btn {
    width: 100%;
    margin-bottom: 10px;
    padding: 8px 12px;
    background-color: #f8f9fa;
    border: 1px solid #ccc;
    color: #333;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 14px;
}

#greyscale-btn:hover {
    background-color: #e9ecef;
}

#greyscale-btn.active {
    background-color: #6c757d;
    color: white;
    border-color: #6c757d;
}

.edit-controls-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 1px solid #eee;
}

.modal-actions-top {
    display: flex;
    gap: 10px;
}

.modal-actions-top button {
    padding: 8px 16px;
    border-radius: 4px;
    font-weight: 500;
    font-size: 13px;
}

#cancel-edit-btn {
    background-color: #6c757d;
    color: white;
    border-color: #6c757d;
}

#cancel-edit-btn:hover {
    background-color: #5a6268;
}

.small-text {
    font-size: 12px;
    color: #6c757d;
    margin: 0 0 10px 0;
    line-height: 1.4;
}

/* 17. Custom Layout Mode Styles */
.custom-resize-handle {
    position: absolute;
    width: 8px;
    height: 8px;
    background-color: #007bff;
    border: 1px solid #ffffff;
    border-radius: 2px;
    cursor: pointer;
    z-index: 10;
}

.custom-resize-handle.nw { cursor: nw-resize; }
.custom-resize-handle.ne { cursor: ne-resize; }
.custom-resize-handle.sw { cursor: sw-resize; }
.custom-resize-handle.se { cursor: se-resize; }

.panel-selected-custom {
    box-shadow: 0 0 0 2px #007bff !important;
}

.snap-guide {
    position: absolute;
    background-color: #007bff;
    z-index: 5;
    opacity: 0.7;
}

.snap-guide.vertical {
    width: 1px;
    height: 100%;
}

.snap-guide.horizontal {
    width: 100%;
    height: 1px;
}

/*/* Layout Span Controls */
#layout-span-controls {
    margin-bottom: 20px;
}

#layout-span-controls h4 {
    margin-bottom: 10px;
    color: #333;
}

#layout-span-controls .small-text {
    margin-bottom: 15px;
}

#panel-colspan-input, #panel-rowspan-input {
    width: 100%;
    padding: 5px;
    border: 1px solid #ccc;
    border-radius: 4px;
}

/* Grid Controls Hierarchical Styling */
.grid-main-control {
    margin-bottom: 8px;
}

.grid-main-label {
    font-weight: 600;
    color: #2c3e50;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
}

.grid-main-label input[type="checkbox"] {
    margin: 0;
    transform: scale(1.1);
}

.grid-sub-controls {
    margin-left: 20px;
    padding-left: 15px;
    border-left: 2px solid #e9ecef;
    transition: all 0.3s ease;
}

.grid-sub-controls.disabled {
    opacity: 0.5;
    pointer-events: none;
}

.grid-sub-control {
    margin-bottom: 8px;
}

.grid-sub-label {
    font-weight: 500;
    color: #495057;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
}

.grid-sub-label input[type="checkbox"] {
    margin: 0;
}

.grid-options {
    margin-top: 15px;
    padding-top: 15px;
    border-top: 1px solid #e9ecef;
    background-color: #f8f9fa;
    border-radius: 6px;
    padding: 15px;
    margin-left: -15px;
    margin-right: -15px;
}

.grid-options .control-item {
    margin-bottom: 12px;
}

.grid-options .control-item:last-child {
    margin-bottom: 0;
}

.grid-options label {
    font-size: 13px;
    color: #6c757d;
    font-weight: 500;
}

/* Enhanced Panel Spacing Section */
.spacing-control {
    margin-bottom: 15px;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    padding: 15px;
    background-color: #f9f9f9;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    transition: background-color 0.3s, box-shadow 0.3s;
}

.spacing-control:hover {
    background-color: #f1f1f1;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.08);
}

.spacing-control label {
    display: block;
    margin-bottom: 12px;
    font-weight: 600;
    color: #2c3e50;
    font-size: 14px;
}

/* Stepper Controls */
.spacing-input-group {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 12px;
    justify-content: center;
}

.btn-sm {
    padding: 8px 12px;
    font-size: 14px;
    font-weight: 600;
    border: 2px solid #007bff;
    border-radius: 6px;
    background: white;
    color: #007bff;
    cursor: pointer;
    transition: all 0.2s ease;
    min-width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-sm:hover:not(:disabled) {
    background: #007bff;
    color: white;
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(0, 123, 255, 0.3);
}

.btn-sm:active:not(:disabled) {
    transform: translateY(0);
}

.btn-sm:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    transform: none;
}

#spacing-number {
    width: 60px;
    text-align: center;
    padding: 8px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-weight: 500;
    /* Remove spinner arrows */
    -moz-appearance: textfield;
}

#spacing-number::-webkit-outer-spin-button,
#spacing-number::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

/* Position px text inside the input */
.spacing-input-group {
    position: relative;
}

.spacing-input-group::after {
    content: "px";
    position: absolute;
    right: 44px;
    top: 50%;
    transform: translateY(-50%);
    color: #6c757d;
    font-size: 12px;
    pointer-events: none;
}

/* Reset and Preset Buttons */
.btn-link {
    background: none;
    border: none;
    color: #007bff;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: opacity 0.2s;
    padding: 4px 8px;
    border-radius: 4px;
}

.btn-link:hover {
    opacity: 0.7;
    background-color: rgba(0, 123, 255, 0.1);
}

.preset-btn {
    padding: 6px 12px;
    font-size: 12px;
    margin-right: 8px;
    border-radius: 20px;
    background: #f8f9fa;
    border: 1px solid #007bff;
    color: #007bff;
    display: inline-block;
}

.preset-btn:hover {
    background: #007bff;
    color: white;
}

/* Enhanced Range Slider - Blue Design with Hollow Circle */
#spacing-slider {
    -webkit-appearance: none;
    width: 100%;
    height: 8px;
    background: linear-gradient(to right, #007bff 0%, #007bff var(--slider-progress, 20%), #e9ecef var(--slider-progress, 20%), #e9ecef 100%);
    border-radius: 4px;
    margin: 15px 0;
    outline: none;
    transition: all 0.2s ease;
    padding: 0;
}

#spacing-slider:hover {
    box-shadow: 0 2px 8px rgba(0, 123, 255, 0.2);
}

/* Webkit (Chrome, Safari) */
#spacing-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: white;
    border: 3px solid #007bff;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.15);
    margin-top: -7px;
    position: relative;
}

#spacing-slider:hover::-webkit-slider-thumb {
    transform: scale(1.15);
    box-shadow: 0 3px 10px rgba(0, 123, 255, 0.3);
}

#spacing-slider:active::-webkit-slider-thumb {
    transform: scale(1.25);
}

/* Firefox */
#spacing-slider::-moz-range-thumb {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: white;
    border: 3px solid #007bff;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.15);
    box-sizing: border-box;
}

#spacing-slider:hover::-moz-range-thumb {
    transform: scale(1.15);
    box-shadow: 0 3px 10px rgba(0, 123, 255, 0.3);
}

#spacing-slider::-moz-range-track {
    height: 8px;
    background: #e9ecef;
    border-radius: 4px;
    border: none;
}

#spacing-slider::-moz-range-progress {
    height: 8px;
    background: #007bff;
    border-radius: 4px;
}

/* Inline Mini-Preview */
.spacing-preview-inline {
    display: flex;
    align-items: center;
    height: 12px;
    margin: 12px 0;
    padding: 0 4px;
    --current-spacing: 10px;
    background: rgba(0, 123, 255, 0.05);
    border-radius: 4px;
    border: 1px solid rgba(0, 123, 255, 0.1);
}

.spacing-preview-inline .block {
    flex: 1;
    background: #007bff;
    height: 8px;
    border-radius: 2px;
    opacity: 0.8;
}

.spacing-preview-inline .separator {
    width: var(--current-spacing);
    height: 8px;
    background: transparent;
}

/* Helper Text */
.small-text {
    font-size: 12px;
    color: #6c757d;
    margin-top: 8px;
    text-align: center;
    font-style: italic;
}

/* Current Value Display */
.spacing-current-value {
    text-align: center;
    font-weight: 600;
    color: #007bff;
    margin: 8px 0;
    font-size: 14px;
}

/* --- Collapsible and Resizable Side Panel --- */
.edit-controls {
    transition: width 0.3s cubic-bezier(0.4,0,0.2,1), min-width 0.3s cubic-bezier(0.4,0,0.2,1);
    min-width: 220px;
    max-width: 600px;
    width: 350px;
    position: relative;
    display: flex;
    flex-direction: column;
}
.edit-controls.collapsed {
    width: 36px !important;
    min-width: 36px !important;
    max-width: 36px !important;
    overflow: hidden;
    padding: 0;
}
.collapse-panel-btn {
    position: absolute;
    top: 12px;
    right: 8px;
    background: none;
    border: none;
    cursor: pointer;
    z-index: 2;
    padding: 4px;
    border-radius: 50%;
    transition: background 0.2s;
}
.collapse-panel-btn:focus {
    outline: 2px solid #007bff;
    background: #e9ecef;
}
.edit-controls.collapsed .collapse-panel-btn span {
    transform: rotate(180deg);
}
.resize-handle {
    position: absolute;
    top: 0;
    right: 0;
    width: 8px;
    height: 100%;
    cursor: ew-resize;
    z-index: 2;
    background: linear-gradient(90deg, #e2e8f0 0%, #cbd5e0 100%);
    opacity: 0.5;
    border-radius: 0 8px 8px 0;
}
.resize-handle:focus {
    outline: 2px solid #007bff;
    opacity: 1;
}

/* --- Sticky Apply/Cancel Buttons --- */
.sticky-actions {
    position: sticky;
    top: 0;
    background: #f8f9fa;
    z-index: 3;
    padding-bottom: 8px;
    border-bottom: 1px solid #e2e8f0;
    display: flex;
    gap: 10px;
    align-items: center;
}

/* --- Accordion Styles --- */
.accordion {
    width: 100%;
    margin-top: 18px;
}
.accordion-item {
    border-radius: 6px;
    margin-bottom: 8px;
    background: #fff;
    box-shadow: 0 1px 4px rgba(0,0,0,0.04);
    border: 1px solid #e2e8f0;
    overflow: hidden;
}
.accordion-header {
    width: 100%;
    background: none;
    border: none;
    text-align: left;
    padding: 12px 16px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    outline: none;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: background 0.2s;
}
.accordion-header:focus {
    background: #e9ecef;
    outline: 2px solid #007bff;
}
.accordion-header[aria-expanded="true"] {
    background: #f1f5f9;
}
.accordion-panel {
    padding: 14px 18px 10px 18px;
    display: block;
    animation: accordion-fade-in 0.3s;
}
.accordion-panel[hidden] {
    display: none;
}
@keyframes accordion-fade-in {
    from { opacity: 0; transform: translateY(-8px); }
    to { opacity: 1; transform: translateY(0); }
}

/* --- Accessibility & Visual Enhancements --- */
.tool-btn:focus, .font-style-btn:focus, .button-group button:focus, .accordion-header:focus {
    outline: 2px solid #007bff;
    outline-offset: 2px;
    background: #e9ecef;
}
.tool-btn.active-tool, .font-style-btn.active {
    background: #e0f2fe;
    border: 1.5px solid #38bdf8;
    color: #0284c7;
}
.edit-controls {
    box-shadow: 0 2px 12px rgba(0,0,0,0.07);
    border-left: 3px solid #e2e8f0;
    border-radius: 0 8px 8px 0;
}
.edit-controls-header {
    background: linear-gradient(90deg, #f8fafc 0%, #e9ecef 100%);
    border-radius: 8px 8px 0 0;
    box-shadow: 0 1px 2px rgba(0,0,0,0.03);
    padding-bottom: 8px;
    margin-bottom: 8px;
}

/* --- Responsive Tweaks --- */
@media (max-width: 900px) {
    .edit-controls { min-width: 120px; }
}
@media (max-width: 768px) {
    .edit-controls { width: 100vw !important; min-width: 0 !important; max-width: 100vw !important; border-left: none; border-top: 3px solid #e2e8f0; border-radius: 0 0 8px 8px; }
    .modal-content { grid-template-columns: 1fr; grid-template-rows: 1fr auto; }
}

/* --- side panel general --- */
.edit-controls{
    /* REMOVE this --> width:350px; */
    width:100%;            /* fill whatever the grid column supplies   */
    min-width:220px;       /* keep safety bounds for resize            */
    max-width:600px;
}

/* collapsed */
.edit-controls.collapsed{
    width:100%;            /* grid column is already 36 px             */
}

/* hide everything except header when collapsed */
.edit-controls.collapsed > :not(.edit-controls-header){display:none!important;}

/* Collapse button and resize handle on left edge */
.edit-controls-header {
    display: flex;
    flex-direction: row;
    align-items: flex-start;
    gap: 8px;
    position: relative;
    padding-left: 0;
}
.collapse-panel-btn {
    position: absolute;
    left: 0;
    top: 12px;
    background: none;
    border: none;
    cursor: pointer;
    z-index: 3;
    padding: 4px;
    border-radius: 50%;
    transition: background 0.2s;
    margin-left: 0;
}
.collapse-panel-btn:focus {
    outline: 2px solid #007bff;
    background: #e9ecef;
}
.edit-controls.collapsed .collapse-panel-btn span {
    transform: rotate(180deg);
}
.resize-handle {
    position: absolute;
    left: 0;
    top: 0;
    width: 10px;
    height: 100%;
    cursor: ew-resize;
    z-index: 2;
    background: linear-gradient(90deg, #e2e8f0 0%, #cbd5e0 100%);
    opacity: 0.7;
    border-radius: 8px 0 0 8px;
    transition: background 0.2s, opacity 0.2s;
}
.resize-handle:hover, .resize-handle:focus {
    background: #b6c2d1;
    opacity: 1;
    outline: 2px solid #007bff;
}
.edit-controls-header h3 {
    margin-left: 32px;
}

/* --- Final styles for a robust, centered, edge-positioned collapse button --- */
.edit-controls {
    position: relative; /* Required for absolute positioning of children */
    /* ... other styles remain the same ... */
}

.edit-controls.collapsed > *:not(.collapse-panel-btn):not(.resize-handle) {
    visibility: hidden;
    opacity: 0;
}

.resize-handle {
    position: absolute;
    left: 0;
    top: 0;
    width: 10px;
    height: 100%;
    cursor: ew-resize;
    z-index: 9;
}

.resize-handle:hover {
    background: rgba(59, 130, 246, 0.15);
}

.collapse-panel-btn {
    position: absolute;
    left: 0;
    top: 50%;
    transform: translate(-50%, -50%); /* Center it on the line */
    background: #ffffff;
    border: 1px solid #d1d5db;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    cursor: pointer;
    z-index: 10;
    padding: 4px;
    border-radius: 50%;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 30px;
    height: 30px;
}

.collapse-panel-btn:hover {
    transform: translate(-50%, -50%) scale(1.1);
    border-color: #3b82f6;
}

.edit-controls.collapsed .collapse-panel-btn {
    transform: translate(-50%, -50%) rotate(180deg);
}

/* --- Final, ROBUST styles for sidebar controls --- */

.edit-controls {
    position: relative;
    overflow: hidden; /* This is REQUIRED */
}

.edit-controls.collapsed {
    /* When collapsed, all direct children are hidden... */
    & > *:not(.collapse-panel-btn) {
        display: none;
    }
}

.resize-handle {
    position: absolute;
    left: 0;
    top: 0;
    width: 8px; /* A thinner, more subtle handle */
    height: 100%;
    cursor: ew-resize;
    z-index: 5;
    transition: background-color 0.2s;
}

.resize-handle:hover {
    background-color: rgba(59, 130, 246, 0.2);
}

.collapse-panel-btn {
    position: absolute;
    top: 50%;
    left: 1px; /* Position inside the left edge */
    transform: translateY(-50%); /* Vertically center it */
    z-index: 10;
    width: 28px;
    height: 28px;
    background-color: white;
    border: 1px solid #e5e7eb;
    box-shadow: 0 1px 3px rgba(0,0,0,0.08);
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.3s ease, background-color 0.2s;
}

.collapse-panel-btn:hover {
    background-color: #f0f9ff;
    border-color: #3b82f6;
}

.edit-controls.collapsed .collapse-panel-btn {
    /* When collapsed, center it within the 36px rail */
    left: 50%;
    transform: translate(-50%, -50%) rotate(180deg);
}

.edit-controls-header {
    padding-left: 35px; /* Add space for the button on the left */
}

/* Force visibility rules placed at bottom to override earlier rules */
.edit-controls.collapsed > * {
    display: none !important;
}
.edit-controls.collapsed .collapse-panel-btn,
.edit-controls.collapsed .resize-handle {
    display: flex !important;
}
.edit-controls.collapsed {
    width: 40px !important;
    min-width: 40px !important;
    max-width: 40px !important;
    overflow: visible !important;
}

.edit-controls .collapse-panel-btn span {
    transition: transform 0.3s;
    display: inline-block;
}
.edit-controls.collapsed .collapse-panel-btn span {
    transform: rotate(180deg) scaleX(-1);
}

#canvas-wrapper {
    width: auto;
    height: auto;
    /* Remove any position: absolute or top/left properties */
    display: block; /* or inline-block */
}

/* Export Progress Modal */
.export-progress-modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 10000;
    animation: fadeIn 0.3s ease-out;
}

.export-progress-modal-content {
    background: white;
    border-radius: 16px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    max-width: 480px;
    width: 90%;
    max-height: 90vh;
    overflow: hidden;
    animation: slideUp 0.3s ease-out;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.export-progress-header {
    display: flex;
    align-items: center;
    padding: 24px 24px 0 24px;
    gap: 16px;
}

.export-progress-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 24px;
    animation: pulse 2s infinite;
}

.export-progress-title {
    flex: 1;
    margin: 0;
    font-size: 20px;
    font-weight: 600;
    color: #2d3748;
}

.export-progress-close-btn {
    background: none;
    border: none;
    color: #a0aec0;
    cursor: pointer;
    padding: 8px;
    border-radius: 8px;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.export-progress-close-btn:hover {
    background: #f7fafc;
    color: #4a5568;
}

.export-progress-body {
    padding: 24px;
}

.export-progress-stage {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 24px;
    padding: 16px;
    background: #f7fafc;
    border-radius: 12px;
    border: 1px solid #e2e8f0;
}

.export-stage-icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 20px;
}

.export-stage-info {
    flex: 1;
}

.export-stage-text {
    display: block;
    font-weight: 600;
    color: #2d3748;
    margin-bottom: 4px;
}

.export-stage-detail {
    display: block;
    font-size: 14px;
    color: #718096;
}

.export-progress-bar-container {
    margin-bottom: 24px;
}

.export-progress-bar {
    width: 100%;
    height: 8px;
    background: #e2e8f0;
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 12px;
}

.export-progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #667eea 0%, #764ba2 100%);
    border-radius: 4px;
    transition: width 0.3s ease;
    width: 0%;
    position: relative;
}

.export-progress-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, transparent 0%, rgba(255, 255, 255, 0.3) 50%, transparent 100%);
    animation: shimmer 2s infinite;
}

.export-progress-text {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 14px;
}

#export-progress-percentage {
    font-weight: 600;
    color: #2d3748;
}

#export-progress-time {
    color: #718096;
}

.export-progress-details {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.export-detail-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.export-detail-label {
    font-size: 12px;
    color: #718096;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 500;
}

.export-detail-value {
    font-size: 14px;
    font-weight: 600;
    color: #2d3748;
}

.export-progress-actions {
    display: flex;
    justify-content: center;
    padding: 0 24px 24px 24px;
}

.export-progress-cancel-btn {
    background: #f7fafc;
    border: 1px solid #e2e8f0;
    color: #4a5568;
    padding: 12px 24px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: 8px;
}

.export-progress-cancel-btn:hover {
    background: #edf2f7;
    border-color: #cbd5e0;
    color: #2d3748;
}

.export-progress-cancel-btn:active {
    background: #e2e8f0;
    transform: translateY(1px);
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideUp {
    from { 
        opacity: 0;
        transform: translateY(20px) scale(0.95);
    }
    to { 
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

/* Responsive Design */
@media (max-width: 600px) {
    .export-progress-modal-content {
        width: 95%;
        margin: 20px;
    }
    
    .export-progress-header {
        padding: 20px 20px 0 20px;
    }
    
    .export-progress-body {
        padding: 20px;
    }
    
    .export-progress-actions {
        padding: 0 20px 20px 20px;
    }
    
    .export-progress-details {
        grid-template-columns: 1fr;
        gap: 12px;
    }
}

/* DPI Validation Message Styling */
.validation-message {
    font-size: 12px;
    margin-top: 5px;
    padding: 4px 8px;
    border-radius: 4px;
    background-color: #fef2f2;
    border: 1px solid #fecaca;
    color: #dc2626;
    animation: fadeIn 0.3s ease-in;
    transition: all 0.2s ease;
}

.validation-message:empty {
    display: none;
}

#dpi-validation-message {
    margin-left: 0;
    font-weight: 500;
}