/* ==========================================================================
   EBOOK STUDIO - MODERN DESIGN SYSTEM & STYLE SHEET
   ========================================================================== */

/* Variables & Base System */
:root {
    --bg-app: #090d16;
    --bg-sidebar: #111827;
    --bg-header: #1f2937;
    --border-color: #374151;
    --border-light: #4b5563;
    
    --accent: #8b5cf6;
    --accent-hover: #7c3aed;
    --accent-glow: rgba(139, 92, 246, 0.25);
    
    --text-main: #f3f4f6;
    --text-muted: #9ca3af;
    --text-dark: #1f2937;
    
    --danger: #ef4444;
    --danger-hover: #dc2626;
    --success: #10b981;
    
    --canvas-bg: #1e293b;
    --paper-bg: #ffffff;
    
    --shadow-premium: 0 10px 25px -5px rgba(0, 0, 0, 0.3), 0 8px 10px -6px rgba(0, 0, 0, 0.3);
    --shadow-paper: 0 20px 25px -5px rgba(0, 0, 0, 0.2), 0 10px 10px -5px rgba(0, 0, 0, 0.2);
    --shadow-inset: inset 0 2px 4px 0 rgba(0, 0, 0, 0.06);
    
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    
    --transition-fast: 0.15s ease;
    --transition-normal: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset & Scrollbars */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', sans-serif;
    -webkit-font-smoothing: antialiased;
}

.hide {
    display: none !important;
}

body {
    background-color: var(--bg-app);
    color: var(--text-main);
    overflow: hidden;
    height: 100vh;
    width: 100vw;
}

.studio-auth-gate {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 24px;
    background:
        radial-gradient(circle at 20% 20%, rgba(139, 92, 246, 0.18), transparent 34%),
        radial-gradient(circle at 80% 80%, rgba(236, 72, 153, 0.12), transparent 30%),
        var(--bg-app);
}

.studio-login-card {
    width: min(440px, 100%);
    padding: 38px;
    border: 1px solid var(--border-color);
    border-radius: 24px;
    background: rgba(17, 24, 39, 0.94);
    box-shadow: var(--shadow-premium);
}

.studio-login-brand {
    width: 58px;
    height: 58px;
    display: grid;
    place-items: center;
    margin-bottom: 22px;
    border-radius: 18px;
    background: linear-gradient(135deg, var(--accent), #ec4899);
    font-size: 24px;
}

.studio-login-kicker {
    color: #c4b5fd;
    font-size: 11px;
    font-weight: 800;
    letter-spacing: 0.16em;
    margin-bottom: 8px;
}

.studio-login-card h1 {
    font-family: 'Playfair Display', serif;
    font-size: 34px;
    margin-bottom: 8px;
}

#studio-auth-message,
.studio-login-note {
    color: var(--text-muted);
    font-size: 13px;
    line-height: 1.55;
}

.studio-auth-error {
    min-height: 20px;
    margin: 12px 0;
    color: #fca5a5;
    font-size: 13px;
}

#studio-login-form {
    display: grid;
    gap: 8px;
}

#studio-login-form label {
    margin-top: 6px;
    color: #d1d5db;
    font-size: 12px;
    font-weight: 600;
}

#studio-login-form input {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid var(--border-color);
    border-radius: 10px;
    background: #0f172a;
    color: var(--text-main);
    outline: none;
}

#studio-login-form input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

#studio-login-form .btn {
    margin-top: 12px;
    padding: 12px 16px;
}

.studio-login-divider {
    display: flex;
    align-items: center;
    gap: 12px;
    margin: 20px 0;
    color: var(--text-muted);
    font-size: 11px;
}

.studio-login-divider::before,
.studio-login-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--border-color);
}

.studio-login-note {
    margin-top: 18px;
    text-align: center;
}

.studio-user-email {
    max-width: 150px;
    overflow: hidden;
    color: var(--text-muted);
    font-size: 11px;
    text-overflow: ellipsis;
    white-space: nowrap;
}

::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: var(--radius-sm);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--border-light);
}

/* App Layout */
.app-container {
    display: flex;
    flex-direction: column;
    height: 100vh;
}

/* Top Bar Styling */
.top-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: var(--bg-header);
    border-bottom: 1px solid var(--border-color);
    padding: 0 20px;
    height: 60px;
    z-index: 50;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-icon {
    font-size: 24px;
    color: var(--accent);
    filter: drop-shadow(0 0 8px var(--accent-glow));
}

.logo-text {
    font-size: 20px;
    font-weight: 800;
    letter-spacing: -0.5px;
}

.accent-text {
    color: var(--accent);
}

.project-title-container {
    display: flex;
    align-items: center;
    gap: 12px;
}

#project-title {
    background: transparent;
    border: 1px solid transparent;
    color: var(--text-main);
    font-size: 16px;
    font-weight: 600;
    padding: 4px 10px;
    border-radius: var(--radius-sm);
    transition: var(--transition-fast);
    max-width: 250px;
}

#project-title:hover, #project-title:focus {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--border-color);
    outline: none;
}

.saved-indicator {
    font-size: 11px;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 5px;
}

.saved-indicator i {
    color: var(--success);
}

.top-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* Main Area Layout */
.main-content {
    display: flex;
    flex: 1;
    height: calc(100vh - 60px);
    overflow: hidden;
}

/* Buttons System */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: var(--transition-normal);
}

.btn-primary {
    background-color: var(--accent);
    color: var(--text-main);
}

.btn-primary:hover {
    background-color: var(--accent-hover);
    box-shadow: 0 0 15px var(--accent-glow);
}

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

.btn-secondary:hover {
    background-color: rgba(255, 255, 255, 0.05);
    border-color: var(--border-light);
}

.btn-full {
    width: 100%;
}

.btn-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: transparent;
    color: var(--text-muted);
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition-fast);
}

.btn-icon:hover {
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-main);
}

.btn-icon:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

.btn-danger-hover:hover {
    background-color: rgba(239, 68, 68, 0.15) !important;
    color: var(--danger) !important;
}

/* Left Sidebar (Tabs & Panels) */
.sidebar-left {
    display: flex;
    width: 340px;
    background-color: var(--bg-sidebar);
    border-right: 1px solid var(--border-color);
    height: 100%;
}

.sidebar-tabs {
    display: flex;
    flex-direction: column;
    width: 70px;
    border-right: 1px solid var(--border-color);
    background-color: rgba(0, 0, 0, 0.2);
    padding: 10px 0;
    gap: 8px;
    align-items: center;
}

.tab-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 6px;
    background: transparent;
    border: none;
    color: var(--text-muted);
    width: 56px;
    height: 56px;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: 9px;
    transition: var(--transition-normal);
}

.tab-btn i {
    font-size: 18px;
}

.tab-btn:hover {
    color: var(--text-main);
    background: rgba(255, 255, 255, 0.05);
}

.tab-btn.active {
    color: var(--accent);
    background: rgba(139, 92, 246, 0.1);
}

.tab-content-container {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
}

.tab-panel {
    display: none;
}

.tab-panel.active {
    display: block;
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.panel-header h3 {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-main);
}

.panel-desc {
    font-size: 12px;
    color: var(--text-muted);
    margin-bottom: 20px;
    line-height: 1.5;
}

/* Insertables & Gallery Grid */
.add-section {
    margin-bottom: 24px;
}

.add-section h4 {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    color: var(--text-muted);
    margin-bottom: 10px;
}

.add-buttons-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.add-item-btn {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-main);
    padding: 12px;
    font-size: 12px;
    font-weight: 500;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 10px;
    transition: var(--transition-fast);
}

.add-item-btn:hover {
    border-color: var(--accent);
    background: rgba(139, 92, 246, 0.05);
    transform: translateY(-1px);
}

/* Asset Galleries */
.assets-gallery {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.gallery-item {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 10px;
    cursor: grab;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    transition: var(--transition-normal);
}

.gallery-item img {
    width: 64px;
    height: 64px;
    object-fit: contain;
    pointer-events: none;
    transition: var(--transition-fast);
}

.gallery-item span {
    font-size: 11px;
    font-weight: 500;
    color: var(--text-muted);
}

.gallery-item:hover {
    border-color: var(--accent);
    background: rgba(139, 92, 246, 0.05);
}

.gallery-item:hover img {
    transform: scale(1.1);
}

.gallery-item:active {
    cursor: grabbing;
}

/* Backgrounds gallery */
.backgrounds-gallery {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.bg-gallery-item {
    position: relative;
    height: 70px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    overflow: hidden;
    cursor: pointer;
    transition: var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

.bg-gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    position: absolute;
    top: 0;
    left: 0;
    z-index: 1;
}

.bg-gallery-item span {
    position: relative;
    z-index: 2;
    font-size: 11px;
    font-weight: 600;
    text-shadow: 0 1px 4px rgba(0, 0, 0, 0.8);
    background: rgba(0, 0, 0, 0.4);
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    color: white;
}

.bg-gallery-item:hover {
    border-color: var(--accent);
    transform: scale(1.02);
}

/* Pages Manager List */
.pages-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
    padding-bottom: 20px;
}

.page-thumbnail-card {
    display: flex;
    align-items: center;
    gap: 12px;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 8px;
    cursor: pointer;
    transition: var(--transition-normal);
}

.page-thumbnail-card:hover {
    border-color: var(--border-light);
    background: rgba(255, 255, 255, 0.04);
}

.page-thumbnail-card.active {
    border-color: var(--accent);
    background: rgba(139, 92, 246, 0.08);
    box-shadow: 0 0 10px rgba(139, 92, 246, 0.15);
}

.page-index {
    font-size: 12px;
    font-weight: 700;
    color: var(--text-muted);
    width: 20px;
    text-align: center;
}

.thumbnail-preview {
    width: 90px;
    height: 60px;
    background-color: var(--canvas-bg);
    border-radius: var(--radius-sm);
    border: 1px solid rgba(255, 255, 255, 0.1);
    background-size: cover;
    background-position: center;
    position: relative;
    overflow: hidden;
}

.thumbnail-preview.has-bg {
    background-color: white;
}

.thumbnail-preview-elements {
    width: 100%;
    height: 100%;
    position: relative;
    pointer-events: none;
    transform: scale(0.125); /* scaled down from 720x480 */
    transform-origin: top left;
}

.thumbnail-actions {
    margin-left: auto;
    display: flex;
    gap: 2px;
}

/* Color Psychology Styles */
.palettes-container {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.palette-card {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 15px;
    transition: var(--transition-normal);
}

.palette-card:hover {
    border-color: var(--accent);
    background: rgba(255, 255, 255, 0.04);
}

.palette-info h4 {
    font-size: 13px;
    font-weight: 700;
    margin-bottom: 4px;
}

.palette-info p {
    font-size: 11px;
    color: var(--text-muted);
    margin-bottom: 12px;
    line-height: 1.4;
}

.palette-swatches {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    height: 30px;
    border-radius: var(--radius-sm);
    overflow: hidden;
    cursor: pointer;
    box-shadow: var(--shadow-inset);
}

.swatch {
    height: 100%;
    transition: var(--transition-fast);
}

.swatch:hover {
    transform: scaleY(1.15);
}

/* Storytelling Styles */
.storytelling-container {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-group label {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-muted);
}

.form-group select, .form-group input, .form-group textarea {
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-main);
    padding: 8px 12px;
    font-size: 13px;
    transition: var(--transition-fast);
}

.form-group select:focus, .form-group input:focus, .form-group textarea:focus {
    border-color: var(--accent);
    outline: none;
}

.story-arc-steps {
    display: flex;
    flex-direction: column;
    gap: 10px;
    background: rgba(0, 0, 0, 0.15);
    border-radius: var(--radius-md);
    padding: 10px;
    border: 1px solid var(--border-color);
    max-height: 240px;
    overflow-y: auto;
}

.step-card {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 10px;
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.02);
    border-left: 3px solid var(--border-color);
    cursor: pointer;
    transition: var(--transition-fast);
}

.step-card:hover {
    background: rgba(255, 255, 255, 0.05);
}

.step-card.active {
    border-left-color: var(--accent);
    background: rgba(139, 92, 246, 0.08);
}

.step-check {
    font-size: 14px;
    color: var(--text-muted);
    margin-top: 2px;
}

.step-card.active .step-check {
    color: var(--accent);
}

.step-card.completed .step-check {
    color: var(--success);
}

.step-details h5 {
    font-size: 12px;
    font-weight: 700;
}

.step-details p {
    font-size: 10px;
    color: var(--text-muted);
    margin-top: 2px;
    line-height: 1.3;
}

.story-guidelines {
    background: rgba(139, 92, 246, 0.05);
    border: 1px solid rgba(139, 92, 246, 0.2);
    border-radius: var(--radius-md);
    padding: 15px;
    margin-top: 10px;
}

.story-guidelines h4 {
    font-size: 12px;
    font-weight: 700;
    color: var(--accent);
    margin-bottom: 8px;
}

.story-guidelines ul {
    list-style: none;
}

.story-guidelines li {
    font-size: 11px;
    color: var(--text-muted);
    margin-bottom: 6px;
    line-height: 1.4;
    position: relative;
    padding-left: 12px;
}

.story-guidelines li::before {
    content: "•";
    color: var(--accent);
    font-weight: bold;
    position: absolute;
    left: 0;
}

/* Workspace Canvas Area */
.workspace-area {
    flex: 1;
    background-color: var(--canvas-bg);
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
}

.canvas-toolbar {
    height: 48px;
    background-color: var(--bg-sidebar);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 16px;
}

.zoom-controls, .page-navigation, .canvas-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

#zoom-value, #page-indicator {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-muted);
}

.canvas-scroll-container {
    flex: 1;
    overflow: auto;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px;
}

/* Page Editor Canvas styling */
.canvas-wrapper {
    position: relative;
    padding: 10px;
    box-shadow: var(--shadow-premium);
    transition: transform 0.2s ease-out;
}

.ebook-page {
    position: relative;
    width: 720px;
    height: 480px;
    background-color: var(--paper-bg);
    border-radius: 4px;
    box-shadow: var(--shadow-paper);
    overflow: hidden;
    user-select: none;
    background-size: cover;
    background-position: center;
}

/* Grid overlay when drag element */
.ebook-page::after {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
    background-size: 30px 30px;
    background-image: 
        linear-gradient(to right, rgba(139, 92, 246, 0.03) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(139, 92, 246, 0.03) 1px, transparent 1px);
    z-index: 1;
}

/* Elements on Canvas */
.canvas-element {
    position: absolute;
    box-sizing: border-box;
    cursor: move;
    z-index: 5;
    padding: 4px;
    outline: 1px solid transparent;
    transition: outline-color var(--transition-fast);
}

.canvas-element.selected {
    outline: 2px solid var(--accent);
    z-index: 20 !important;
}

/* Element inner content */
.canvas-element-content {
    width: 100%;
    height: 100%;
    user-select: none;
}

/* Text Element specific styling */
.canvas-element[data-type="title"] {
    min-width: 120px;
}

.canvas-element[data-type="title"] .canvas-element-content {
    font-family: 'Fredoka', sans-serif;
    font-size: 32px;
    font-weight: 700;
    color: var(--text-dark);
    line-height: 1.2;
    white-space: pre-wrap;
    word-break: break-word;
}

.canvas-element[data-type="paragraph"] {
    min-width: 150px;
}

.canvas-element[data-type="paragraph"] .canvas-element-content {
    font-family: 'Playpen Sans', sans-serif;
    font-size: 18px;
    font-weight: 400;
    color: var(--text-dark);
    line-height: 1.4;
    white-space: pre-wrap;
    word-break: break-word;
}

/* Image Element specific styling */
.canvas-element[data-type="image"] {
    display: flex;
    align-items: center;
    justify-content: center;
}

.canvas-element[data-type="image"] img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    pointer-events: none;
}

/* Shape Element specific styling */
.canvas-element[data-type="rect"] .canvas-element-content {
    background-color: #3b82f6;
    border: 1px solid #1d4ed8;
}

.canvas-element[data-type="circle"] .canvas-element-content {
    background-color: #ef4444;
    border: 1px solid #b91c1c;
    border-radius: 50%;
}

/* Resize Handles */
.resize-handle {
    position: absolute;
    width: 10px;
    height: 10px;
    background-color: white;
    border: 2px solid var(--accent);
    border-radius: 50%;
    display: none;
    z-index: 30;
}

.canvas-element.selected .resize-handle {
    display: block;
}

.resize-handle-nw { top: -5px; left: -5px; cursor: nwse-resize; }
.resize-handle-ne { top: -5px; right: -5px; cursor: nesw-resize; }
.resize-handle-sw { bottom: -5px; left: -5px; cursor: nesw-resize; }
.resize-handle-se { bottom: -5px; right: -5px; cursor: nwse-resize; }

/* Smart Alignment Guides */
.smart-guide {
    position: absolute;
    background-color: #ff007f;
    z-index: 100;
    pointer-events: none;
    display: none;
}

.smart-guide-x {
    left: 0;
    width: 100%;
    height: 1px;
    border-top: 1px dashed #ff007f;
}

.smart-guide-y {
    top: 0;
    height: 100%;
    width: 1px;
    border-left: 1px dashed #ff007f;
}

/* Right Sidebar (Properties Inspector) */
.sidebar-right {
    width: 320px;
    background-color: var(--bg-sidebar);
    border-left: 1px solid var(--border-color);
    height: 100%;
    overflow-y: auto;
    position: relative;
}

.no-selection-message {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 40px;
    text-align: center;
    color: var(--text-muted);
    gap: 15px;
}

.no-selection-message i {
    font-size: 32px;
    color: var(--border-light);
}

.no-selection-message p {
    font-size: 13px;
    line-height: 1.5;
}

.inspector-content {
    padding: 20px;
}

.inspector-content.hide {
    display: none;
}

@media (max-width: 1180px) {
    .sidebar-left { width: 290px; }
    .sidebar-right { width: 270px; }
    .saved-indicator { display: none; }
    .top-actions { gap: 6px; }
    .top-actions .btn { padding: 8px 10px; }
    .studio-user-email { display: none; }
}

@media (max-width: 760px) {
    .top-bar {
        height: 104px;
        padding: 8px 10px;
        display: grid;
        grid-template-columns: auto 1fr;
        grid-template-rows: 42px 42px;
    }
    .logo-text { display: none; }
    .project-title-container { justify-content: flex-end; }
    #project-title { max-width: 220px; text-align: right; }
    .top-actions {
        grid-column: 1 / -1;
        justify-content: center;
        overflow-x: auto;
    }
    .top-actions .btn { white-space: nowrap; }
    .main-content { height: calc(100vh - 104px); }
    .sidebar-left { width: 250px; min-width: 250px; }
    .sidebar-tabs { width: 56px; }
    .tab-btn { width: 48px; }
    .tab-content-container { padding: 14px; }
    .sidebar-right { display: none; }
    .workspace-area { min-width: 0; }
    .canvas-scroll-container {
        justify-content: flex-start;
        padding: 18px;
    }
}

.element-tag {
    font-size: 10px;
    background: rgba(139, 92, 246, 0.15);
    color: var(--accent);
    padding: 2px 8px;
    border-radius: 12px;
    font-weight: 700;
    text-transform: uppercase;
}

.inspector-section {
    border-bottom: 1px solid var(--border-color);
    padding: 16px 0;
}

.inspector-section:last-child {
    border-bottom: none;
}

.inspector-section h4 {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    color: var(--text-muted);
    margin-bottom: 12px;
}

.properties-row {
    display: flex;
    gap: 10px;
    margin-bottom: 12px;
}

.properties-row .form-group {
    flex: 1;
}

.properties-row-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
}

.form-group-inline {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.form-group-inline label {
    font-size: 9px;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
}

.form-group-inline input {
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-main);
    padding: 6px;
    font-size: 11px;
    width: 100%;
}

.text-style-actions {
    display: flex;
    gap: 5px;
    margin-top: 10px;
}

.style-toggle-btn {
    flex: 1;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-muted);
    padding: 8px;
    cursor: pointer;
    font-size: 13px;
    transition: var(--transition-fast);
}

.style-toggle-btn:hover {
    color: var(--text-main);
    border-color: var(--border-light);
}

.style-toggle-btn.active {
    background: rgba(139, 92, 246, 0.15);
    border-color: var(--accent);
    color: var(--accent);
}

.animation-preview-control {
    margin-top: 15px;
}

/* Preview Modal System */
.preview-dialog {
    width: 90%;
    max-width: 960px;
    height: 80%;
    max-height: 640px;
    background-color: var(--bg-sidebar);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    margin: auto;
    padding: 0;
    overflow: hidden;
    outline: none;
}

.preview-dialog::backdrop {
    background-color: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(8px);
}

.preview-header {
    height: 50px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 24px;
    border-bottom: 1px solid var(--border-color);
}

.preview-header h2 {
    font-size: 16px;
    font-weight: 700;
}

.preview-body {
    height: calc(100% - 90px);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px;
    background-color: var(--canvas-bg);
}

.preview-nav-btn {
    width: 48px;
    height: 48px;
    background: var(--bg-sidebar);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    color: var(--text-main);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 18px;
    transition: var(--transition-normal);
}

.preview-nav-btn:hover {
    background: var(--accent);
    border-color: var(--accent);
    box-shadow: 0 0 10px var(--accent-glow);
}

.preview-page-container {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}

.preview-page {
    position: relative;
    width: 720px;
    height: 480px;
    background-color: white;
    box-shadow: var(--shadow-paper);
    border-radius: 4px;
    overflow: hidden;
    transform: scale(0.9);
}

.preview-page .canvas-element {
    cursor: default;
}

.preview-footer {
    height: 40px;
    border-top: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
}

#preview-page-counter {
    font-size: 12px;
    color: var(--text-muted);
    font-weight: 600;
}

/* ==========================================================================
   KID-FRIENDLY ANIMATIONS (KEYFRAMES & TRIGGERS)
   ========================================================================== */

/* 1. Bounce */
.anim-bounce {
    animation-duration: 0.8s;
    animation-fill-mode: both;
    transform-origin: center bottom;
}
.anim-bounce-trigger {
    animation-name: bounceKey;
}
@keyframes bounceKey {
    0%, 20%, 53%, 80%, 100% {
        transform: translate3d(0,0,0) scaleY(1);
    }
    40%, 43% {
        transform: translate3d(0, -30px, 0) scaleY(1.1);
    }
    70% {
        transform: translate3d(0, -15px, 0) scaleY(1.05);
    }
    90% {
        transform: translate3d(0,-4px,0) scaleY(1.02);
    }
}

/* 2. Spin */
.anim-spin {
    animation-duration: 1s;
    animation-fill-mode: both;
}
.anim-spin-trigger {
    animation-name: spinKey;
}
@keyframes spinKey {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

/* 3. Float (Looping animation by default or single) */
.anim-float {
    animation-duration: 3s;
    animation-iteration-count: infinite;
    animation-timing-function: ease-in-out;
}
.anim-float-trigger {
    animation-name: floatKey;
}
@keyframes floatKey {
    0% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-12px);
    }
    100% {
        transform: translateY(0px);
    }
}

/* 4. Pulse */
.anim-pulse {
    animation-duration: 1.5s;
    animation-iteration-count: infinite;
    animation-timing-function: ease-in-out;
}
.anim-pulse-trigger {
    animation-name: pulseKey;
}
@keyframes pulseKey {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.08);
    }
    100% {
        transform: scale(1);
    }
}

/* 5. Wobble */
.anim-wobble {
    animation-duration: 0.8s;
    animation-fill-mode: both;
}
.anim-wobble-trigger {
    animation-name: wobbleKey;
}
@keyframes wobbleKey {
    0% { transform: rotate(0deg); }
    15% { transform: rotate(-5deg); }
    30% { transform: rotate(3deg); }
    45% { transform: rotate(-3deg); }
    60% { transform: rotate(2deg); }
    75% { transform: rotate(-1deg); }
    100% { transform: rotate(0deg); }
}

/* 6. Fade In */
.anim-fade-in {
    animation-duration: 1s;
    animation-fill-mode: both;
}
.anim-fade-in-trigger {
    animation-name: fadeInKey;
}
@keyframes fadeInKey {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* ==========================================================================
   AI ASSISTANT SIDEBAR PANEL & SPINNER
   ========================================================================== */
.api-setup-box {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 12px;
}

.ai-status-indicator {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 10px;
    font-size: 11px;
    font-weight: 600;
    color: var(--text-muted);
}

.ai-status-indicator i {
    font-size: 8px;
    color: #fbbf24;
}

.ai-status-indicator.offline i {
    color: #fbbf24;
    text-shadow: 0 0 6px rgba(251, 191, 36, 0.4);
}

.ai-status-indicator.online i {
    color: var(--success);
    text-shadow: 0 0 6px rgba(16, 185, 129, 0.4);
}

.ai-loading-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    margin-top: 20px;
    gap: 12px;
    padding: 15px;
    background: rgba(0, 0, 0, 0.3);
    border-radius: var(--radius-md);
    border: 1px dashed var(--border-color);
}

.ai-loading-container.hide {
    display: none;
}

.ai-spinner {
    width: 28px;
    height: 28px;
    border: 3px solid rgba(139, 92, 246, 0.15);
    border-top: 3px solid var(--accent);
    border-radius: 50%;
    animation: ai-spin-kf 0.8s linear infinite;
}

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

#ai-loading-text {
    font-size: 11px;
    color: var(--text-muted);
    font-weight: 500;
}