/* CSS Design System for PDFCraft */

:root {
    /* Theme Variables - Dark Theme (Default) */
    --bg-primary: #0b0a11;
    --bg-secondary: #13111c;
    --bg-card: rgba(26, 24, 38, 0.7);
    --bg-card-hover: rgba(36, 33, 52, 0.85);
    
    --accent-primary: #8b5cf6;
    --accent-primary-hover: #7c3aed;
    --accent-secondary: #ec4899;
    --accent-glow: rgba(139, 92, 246, 0.15);
    
    --text-main: #f3f4f6;
    --text-muted: #9ca3af;
    --border-color: rgba(139, 92, 246, 0.12);
    --border-focus: rgba(139, 92, 246, 0.4);
    
    --danger: #ef4444;
    --success: #10b981;
    
    --font-sans: 'Inter', sans-serif;
    --font-heading: 'Outfit', sans-serif;
    
    --sidebar-width: 280px;
    --header-height: 80px;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.4);
}

/* Light Theme Variables */
body.light-theme {
    --bg-primary: #f8fafc;
    --bg-secondary: #f1f5f9;
    --bg-card: #ffffff;
    --bg-card-hover: #f8fafc;
    
    --accent-primary: #6d28d9;
    --accent-primary-hover: #5b21b6;
    --accent-secondary: #db2777;
    --accent-glow: rgba(109, 40, 217, 0.08);
    
    --text-main: #0f172a;
    --text-muted: #64748b;
    --border-color: rgba(109, 40, 217, 0.1);
    --border-focus: rgba(109, 40, 217, 0.3);
    
    --shadow-sm: 0 2px 8px rgba(109, 40, 217, 0.04);
    --shadow-md: 0 8px 24px rgba(109, 40, 217, 0.08);
    --shadow-lg: 0 16px 40px rgba(109, 40, 217, 0.12);
}

/* General Resets */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background-color: var(--bg-primary);
    color: var(--text-main);
    font-family: var(--font-sans);
    height: 100vh;
    overflow: hidden;
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* Scrollbar Customization */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}
::-webkit-scrollbar-track {
    background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: var(--radius-sm);
}
::-webkit-scrollbar-thumb:hover {
    background: var(--accent-primary);
}

/* App Container Layout */
.app-container {
    display: flex;
    height: 100vh;
    width: 100vw;
    overflow: hidden;
}

/* Sidebar Navigation */
.sidebar {
    width: var(--sidebar-width);
    background-color: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    padding: 2rem 1.5rem;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    flex-shrink: 0;
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

.logo-area {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 3rem;
}

.logo-icon {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    width: 44px;
    height: 44px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px var(--accent-glow);
}

.icon-brand {
    color: #ffffff;
    width: 22px;
    height: 22px;
}

.brand-title {
    font-family: var(--font-heading);
    font-size: 1.35rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    line-height: 1;
}

.brand-title span {
    color: var(--accent-primary);
}

.brand-badge {
    font-size: 0.7rem;
    color: var(--text-muted);
    font-weight: 500;
}

.nav-menu {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    flex-grow: 1;
}

.nav-btn {
    background: none;
    border: none;
    padding: 0.85rem 1rem;
    color: var(--text-muted);
    font-family: var(--font-sans);
    font-size: 0.95rem;
    font-weight: 500;
    border-radius: var(--radius-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    width: 100%;
    text-align: left;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-btn i {
    width: 18px;
    height: 18px;
}

.nav-btn:hover {
    color: var(--text-main);
    background-color: rgba(139, 92, 246, 0.06);
}

.nav-btn.active {
    color: #ffffff;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-primary-hover));
    box-shadow: 0 4px 14px var(--accent-glow);
}

.sidebar-footer {
    margin-top: auto;
}

.privacy-box {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 1rem;
    border-radius: var(--radius-md);
    display: flex;
    gap: 0.75rem;
    align-items: flex-start;
}

.privacy-box i {
    color: var(--success);
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    margin-top: 2px;
}

.privacy-box p {
    font-size: 0.75rem;
    color: var(--text-muted);
    line-height: 1.4;
}

.privacy-box strong {
    color: var(--text-main);
}

/* Workspace Layout */
.workspace {
    flex-grow: 1;
    padding: 2rem 2.5rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    background-color: var(--bg-primary);
    overflow: hidden;
    height: 100vh;
}

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

.tool-title-area h2 {
    font-family: var(--font-heading);
    font-size: 1.75rem;
    font-weight: 700;
}

.tool-title-area p {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-top: 0.25rem;
}

/* Buttons & Inputs */
.btn-icon {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

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

.btn {
    background: none;
    border: none;
    font-family: var(--font-sans);
    font-weight: 600;
    font-size: 0.9rem;
    padding: 0.65rem 1.25rem;
    border-radius: var(--radius-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn i {
    width: 16px;
    height: 16px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-primary-hover));
    color: #ffffff;
    box-shadow: 0 4px 12px var(--accent-glow);
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 18px var(--accent-glow);
}

.btn-primary:active {
    transform: translateY(1px);
}

.btn-secondary {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-main);
}

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

.btn-large {
    padding: 1rem 2rem;
    font-size: 1rem;
    border-radius: var(--radius-md);
}

.btn-sm {
    padding: 0.4rem 0.85rem;
    font-size: 0.8rem;
    border-radius: 6px;
}

.btn-toolbar {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    padding: 0.5rem 1rem;
    font-size: 0.85rem;
}

.btn-toolbar:hover, .btn-toolbar.active {
    border-color: var(--accent-primary);
    background-color: var(--bg-card-hover);
    color: var(--accent-primary);
}

/* Tool Tab Panels */
.tool-content {
    flex-grow: 1;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.tab-panel {
    display: none;
    animation: fadeIn 0.3s ease;
    height: 100%;
}

.tab-panel.active {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    height: 100%;
    overflow: hidden;
}

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

/* Upload Drop Zone */
.drop-zone {
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-lg);
    background-color: var(--bg-card);
    min-height: 350px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.drop-zone:hover, .drop-zone.drag-over {
    border-color: var(--accent-primary);
    background-color: var(--accent-glow);
    transform: scale(0.99);
}

.file-input {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: pointer;
}

.drop-zone-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    pointer-events: none;
    text-align: center;
    padding: 2rem;
}

.upload-icon-wrapper {
    width: 64px;
    height: 64px;
    background-color: rgba(139, 92, 246, 0.08);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 0.5rem;
    transition: transform 0.3s ease;
}

.drop-zone:hover .upload-icon-wrapper {
    transform: translateY(-4px);
    background-color: rgba(139, 92, 246, 0.15);
}

.upload-icon-wrapper i {
    width: 32px;
    height: 32px;
    color: var(--accent-primary);
}

.drop-zone-content h3 {
    font-family: var(--font-heading);
    font-size: 1.35rem;
    font-weight: 600;
}

.drop-zone-content p {
    color: var(--text-muted);
}

.drop-zone-content .highlight {
    color: var(--accent-primary);
    font-weight: 600;
}

.file-spec {
    font-size: 0.75rem;
    color: var(--text-muted);
    background-color: rgba(0,0,0,0.1);
    padding: 0.25rem 0.75rem;
    border-radius: 100px;
}

/* Workspace Card Container */
.workspace-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    display: flex;
    flex-direction: column;
    flex-grow: 1;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    height: 100%;
}

.workspace-card.drag-over-active {
    border-color: var(--accent-primary) !important;
    background-color: var(--accent-glow) !important;
    box-shadow: 0 0 30px rgba(139, 92, 246, 0.25) !important;
    transform: scale(0.995);
}


.card-header {
    padding: 1.25rem 2rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.card-header-left {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.card-header-actions {
    display: flex;
    gap: 0.75rem;
}

.badge {
    background-color: rgba(139, 92, 246, 0.12);
    color: var(--accent-primary);
    font-weight: 600;
    font-size: 0.8rem;
    padding: 0.35rem 0.85rem;
    border-radius: 100px;
    border: 1px solid rgba(139, 92, 246, 0.2);
}

.card-footer {
    padding: 1.5rem 2rem;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
}

/* Files Grid (Merge PDF Tool) */
.files-grid {
    padding: 2rem;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 1.5rem;
    min-height: 200px;
    max-height: 500px;
    overflow-y: auto;
}

.file-tile {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1rem;
    position: relative;
    cursor: grab;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    text-align: center;
}

.file-tile:hover {
    border-color: var(--accent-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.file-tile:active {
    cursor: grabbing;
}

.tile-preview {
    width: 80px;
    height: 110px;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 8px rgba(0,0,0,0.15);
    position: relative;
}

.tile-preview canvas {
    width: 100% !important;
    height: 100% !important;
    object-fit: contain;
}

.tile-icon-fallback {
    color: var(--text-muted);
}

.tile-title {
    font-size: 0.75rem;
    font-weight: 500;
    width: 100%;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.tile-pages {
    font-size: 0.65rem;
    color: var(--text-muted);
}

.tile-remove-btn {
    position: absolute;
    top: 8px;
    right: 8px;
    background-color: rgba(239, 68, 68, 0.15);
    border: none;
    color: var(--danger);
    width: 24px;
    height: 24px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: all 0.2s ease;
}

.file-tile:hover .tile-remove-btn {
    opacity: 1;
}

.tile-remove-btn:hover {
    background-color: var(--danger);
    color: #ffffff;
}

.file-tile-drag {
    opacity: 0.5;
    border: 2px dashed var(--accent-primary);
}

/* Split PDF Layout */
.split-controls-layout {
    display: grid;
    grid-template-columns: 300px 1fr;
    flex-grow: 1;
    overflow: hidden;
    height: auto;
}

.split-sidebar-options {
    padding: 2rem;
    border-right: 1px solid var(--border-color);
    background-color: rgba(0,0,0,0.05);
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    overflow-y: auto;
    height: 100%;
}

.split-sidebar-options h3 {
    font-size: 1rem;
    font-weight: 600;
    font-family: var(--font-heading);
}

.option-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.option-group label {
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-muted);
}

.radio-group {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-top: 0.25rem;
}

.radio-container {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    cursor: pointer;
}

.radio-container input {
    margin-top: 3px;
    accent-color: var(--accent-primary);
}

.radio-label {
    font-size: 0.85rem !important;
    color: var(--text-main) !important;
    line-height: 1.4;
}

.option-group input[type="text"] {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    padding: 0.75rem 1rem;
    border-radius: var(--radius-sm);
    color: var(--text-main);
    font-family: var(--font-sans);
    font-size: 0.9rem;
    outline: none;
    transition: border-color 0.2s ease;
}

.option-group input[type="text"]:focus {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 2px var(--border-focus);
}

.helper-text {
    font-size: 0.7rem;
    color: var(--text-muted);
    line-height: 1.4;
}

.helper-text-white {
    font-size: 0.75rem;
    color: var(--text-main);
    line-height: 1.4;
}

.selection-summary {
    margin-top: auto;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    padding: 1rem;
    border-radius: var(--radius-sm);
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.summary-row {
    display: flex;
    justify-content: space-between;
    font-size: 0.8rem;
}

.summary-row span:last-child {
    font-weight: 700;
    color: var(--accent-primary);
}

.split-pages-preview-container {
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    overflow: hidden;
    height: 100%;
}

.preview-actions {
    display: flex;
    gap: 0.5rem;
}

.pages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 1.25rem;
    overflow-y: auto;
    flex-grow: 1;
    padding-bottom: 1rem;
}

/* Page Thumbnail Tiles (Split Tool) */
.page-tile {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 0.75rem;
    cursor: pointer;
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.2s ease;
}

.page-tile:hover {
    border-color: var(--accent-primary);
    transform: translateY(-1px);
}

.page-tile.selected {
    border-color: var(--accent-primary);
    background-color: var(--accent-glow);
    box-shadow: 0 0 0 2px var(--accent-primary);
}

.page-preview {
    width: 90px;
    height: 125px;
    background-color: var(--bg-card);
    border-radius: 4px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.page-preview canvas {
    width: 100% !important;
    height: 100% !important;
    object-fit: contain;
}

.page-number {
    font-size: 0.75rem;
    font-weight: 600;
}

.page-checkbox {
    position: absolute;
    top: 8px;
    right: 8px;
    width: 18px;
    height: 18px;
    border-radius: 4px;
    border: 1px solid var(--border-color);
    background-color: var(--bg-card);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

.page-tile.selected .page-checkbox {
    background-color: var(--accent-primary);
    border-color: var(--accent-primary);
}

.page-checkbox::after {
    content: '';
    width: 4px;
    height: 8px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg) translate(-1px, -1px);
    display: none;
}

.page-tile.selected .page-checkbox::after {
    display: block;
}

/* Edit & Sign Layout */
.editor-toolbar {
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: 0.75rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

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

.editor-layout {
    display: grid;
    grid-template-columns: 160px 1fr;
    flex-grow: 1;
    overflow: hidden;
    height: auto;
}

.editor-thumbnails {
    padding: 1rem;
    border-right: 1px solid var(--border-color);
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    align-items: center;
    background-color: rgba(0,0,0,0.05);
    height: 100%;
}

.thumb-item {
    width: 100px;
    height: 140px;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    cursor: pointer;
    overflow: hidden;
    position: relative;
    box-shadow: var(--shadow-sm);
    transition: all 0.2s ease;
}

.thumb-item:hover {
    border-color: var(--accent-primary);
}

.thumb-item.active {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 2px var(--accent-primary);
}

.thumb-item canvas {
    width: 100% !important;
    height: 100% !important;
    object-fit: contain;
}

.thumb-number {
    position: absolute;
    bottom: 4px;
    left: 50%;
    transform: translateX(-50%);
    background-color: rgba(0,0,0,0.6);
    color: #ffffff;
    font-size: 0.65rem;
    padding: 0.1rem 0.4rem;
    border-radius: 10px;
}

.editor-canvas-container {
    flex-grow: 1;
    padding: 2rem;
    display: flex;
    align-items: flex-start; /* Fix the flexbox overflow top-cut bug! */
    justify-content: center;
    background-color: rgba(0, 0, 0, 0.2);
    overflow: auto;
    height: 100%;
}

.canvas-wrapper {
    position: relative;
    background-color: #ffffff;
    box-shadow: var(--shadow-lg);
    display: inline-block;
    margin: 2rem auto; /* Center element, allows scrolling to top and bottom when overflowing! */
}

.canvas-wrapper canvas {
    display: block;
}

/* Draggable Overlay Elements (Sign/Edit Tool) */
.draggable-overlay {
    position: absolute;
    cursor: move;
    user-select: none;
    border: 1px dashed transparent;
    box-sizing: border-box;
    z-index: 10;
}

.draggable-overlay:hover, .draggable-overlay.editing-active {
    border-color: var(--accent-primary);
}

.draggable-overlay .element-controls {
    position: absolute;
    top: -28px;
    right: 0;
    display: none;
    gap: 4px;
    background-color: var(--accent-primary);
    padding: 2px;
    border-radius: 4px;
    z-index: 10;
}

.draggable-overlay:hover .element-controls, .draggable-overlay.editing-active .element-controls {
    display: flex;
}

.control-btn {
    background: none;
    border: none;
    color: #ffffff;
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    border-radius: 2px;
}

.control-btn:hover {
    background-color: rgba(255,255,255,0.2);
}

.draggable-overlay.text-element {
    padding: 4px;
    font-family: 'Helvetica', Arial, sans-serif;
    color: #000000;
    font-size: 16px;
    min-width: 50px;
    white-space: nowrap;
    line-height: 1.2;
}

.draggable-overlay.text-element input {
    background: rgba(255, 255, 255, 0.95);
    border: 1.5px solid var(--accent-primary);
    border-radius: 4px;
    color: #000000;
    font-family: inherit;
    font-size: inherit;
    font-weight: inherit;
    outline: none;
    width: 100%;
    padding: 2px 6px;
    box-shadow: 0 0 10px rgba(139, 92, 246, 0.3);
}

.draggable-overlay.signature-element {
    width: 150px;
    height: 60px;
}

.draggable-overlay.signature-element img {
    width: 100%;
    height: 100%;
    pointer-events: none;
}

/* Resize handle for overlays */
.resize-handle {
    position: absolute;
    width: 12px;
    height: 12px;
    background-color: var(--accent-primary);
    border: 2px solid #ffffff;
    border-radius: 50%;
    bottom: -6px;
    right: -6px;
    cursor: nwse-resize;
    display: none;
    z-index: 100;
    box-shadow: 0 2px 6px rgba(0,0,0,0.3);
    pointer-events: auto !important;
}

.draggable-overlay:hover .resize-handle, .draggable-overlay.editing-active .resize-handle {
    display: block;
}

/* Modal Styling */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.75);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    transition: opacity 0.2s ease;
}

.modal-overlay.active {
    display: flex;
    opacity: 1;
}

.modal-content {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    width: 550px;
    box-shadow: var(--shadow-lg);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transform: scale(0.95);
    transition: transform 0.2s ease;
}

.modal-overlay.active .modal-content {
    transform: scale(1);
}

.modal-header {
    padding: 1.25rem 2rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    font-weight: 600;
}

.close-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 1.5rem;
    cursor: pointer;
}

.close-btn:hover {
    color: var(--text-main);
}

.modal-body {
    padding: 2rem;
}

.signature-pad-container {
    background-color: #ffffff;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    overflow: hidden;
}

.signature-pad-container canvas {
    display: block;
    cursor: crosshair;
}

.signature-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 1rem;
}

.color-options {
    display: flex;
    gap: 0.5rem;
}

.color-btn {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    border: 2px solid transparent;
    cursor: pointer;
}

.color-btn.active {
    border-color: var(--accent-primary);
    transform: scale(1.1);
}

.modal-footer {
    padding: 1.25rem 2rem;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
}

/* Processing Loading Overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(11, 10, 17, 0.9);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    text-align: center;
}

.loading-overlay.active {
    display: flex;
}

.spinner-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid rgba(139, 92, 246, 0.1);
    border-top-color: var(--accent-primary);
    border-radius: 50%;
    animation: spin 1s infinite linear;
}

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

.spinner-content h3 {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 600;
}

.spinner-content p {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* Monetization & Ad Slots CSS */
.ad-slot {
    margin: 1rem 0;
    background: rgba(255, 255, 255, 0.02);
    border: 1px dashed var(--border-color);
    border-radius: var(--radius-sm);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 0.5rem;
    overflow: hidden;
    transition: all 0.3s ease;
}

.ad-label {
    font-size: 0.55rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.8px;
    margin-bottom: 0.25rem;
}

.ad-placeholder {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-muted);
    border: 1px solid rgba(255, 255, 255, 0.04);
    background: rgba(0, 0, 0, 0.15);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100px;
    border-radius: 6px;
    text-align: center;
}

.sidebar-ad {
    margin-top: 0.75rem;
    margin-bottom: 0.25rem;
}

.sidebar-ad .ad-placeholder {
    height: 110px;
}

.horizontal-ad {
    margin: 0.5rem 1.5rem 1rem 1.5rem;
    height: 70px;
    flex-shrink: 0;
}

.horizontal-ad .ad-placeholder {
    height: 50px;
}

/* Footer Compliance Navigation Links */
.footer-link {
    color: var(--text-muted);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s ease;
}

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

/* Empty State Landing Ads */
.landing-ad {
    margin-top: 1.5rem;
    max-width: 360px;
    margin-left: auto;
    margin-right: auto;
}

.landing-ad .ad-placeholder {
    height: 280px;
    width: 336px;
}

/* Page tile action button styles (Rotate/Delete tools) */
.tile-action-btn {
    position: absolute;
    top: 8px;
    right: 8px;
    width: 26px;
    height: 26px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    background-color: var(--bg-card);
    color: var(--text-main);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s ease;
    z-index: 10;
    padding: 0;
}

.tile-action-btn:hover {
    background-color: var(--accent-primary);
    color: #fff;
    border-color: var(--accent-primary);
    transform: scale(1.05);
}

.page-tile.deleted {
    opacity: 0.35;
    border-color: var(--danger) !important;
}

.page-tile.deleted .tile-action-btn {
    background-color: var(--danger);
    color: #fff;
    border-color: var(--danger);
}