/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Colors */
    --primary-color: #6366f1;
    --primary-hover: #4f46e5;
    --secondary-color: #64748b;
    --secondary-hover: #475569;
    --success-color: #10b981;
    --error-color: #ef4444;
    --warning-color: #f59e0b;
    --info-color: #3b82f6;
    
    /* Backgrounds */
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #e2e8f0;
    --bg-dark: #1e293b;
    --bg-darker: #0f172a;
    
    /* Text */
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-light: #94a3b8;
    --text-white: #ffffff;
    
    /* Borders */
    --border-color: #e2e8f0;
    --border-radius: 8px;
    --border-radius-sm: 4px;
    --border-radius-lg: 12px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    
    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    
    /* Typography */
    --font-family: 'Inter', sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-md: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-md);
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-secondary);
    overflow-x: hidden;
}

/* Utility Classes */
.hidden {
    display: none !important;
}

.text-center {
    text-align: center;
}

.text-left {
    text-align: left;
}

.text-right {
    text-align: right;
}

.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }

.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }

/* Loading Screen */
.loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    transition: opacity var(--transition-slow), visibility var(--transition-slow);
}

.loading-screen.fade-out {
    opacity: 0;
    visibility: hidden;
}

.loading-spinner {
    text-align: center;
    color: var(--text-white);
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top: 4px solid var(--text-white);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto var(--space-md);
}

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

/* Navigation */
.navbar {
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-sm);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 64px;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--primary-color);
}

.nav-brand i {
    font-size: var(--font-size-xl);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.nav-item {
    position: relative;
}

.nav-link {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    transition: color var(--transition-fast);
}

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

.user-info {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    position: relative;
}

.user-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--primary-color);
    color: var(--text-white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-sm);
}

.user-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    min-width: 150px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-fast);
}

.user-info:hover .user-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-btn {
    width: 100%;
    padding: var(--space-sm) var(--space-md);
    text-align: left;
    border: none;
    background: none;
    cursor: pointer;
    transition: background-color var(--transition-fast);
}

.dropdown-btn:hover {
    background: var(--bg-secondary);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    border: none;
    border-radius: var(--border-radius);
    font-size: var(--font-size-sm);
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    user-select: none;
}

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

.btn-primary:hover {
    background: var(--primary-hover);
}

.btn-secondary {
    background: var(--secondary-color);
    color: var(--text-white);
}

.btn-secondary:hover {
    background: var(--secondary-hover);
}

.btn-success {
    background: var(--success-color);
    color: var(--text-white);
}

.btn-error {
    background: var(--error-color);
    color: var(--text-white);
}

.btn-sm {
    padding: var(--space-xs) var(--space-sm);
    font-size: var(--font-size-xs);
}

.btn-large {
    padding: var(--space-md) var(--space-xl);
    font-size: var(--font-size-lg);
}

.btn-full {
    width: 100%;
    justify-content: center;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* Main Content */
.main-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--space-xl) var(--space-md);
}

/* Welcome Section */
.welcome-section {
    text-align: center;
    padding: var(--space-2xl) 0;
}

.welcome-container h1 {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: var(--space-md);
}

.welcome-container p {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    margin-bottom: var(--space-2xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-xl);
    margin-bottom: var(--space-2xl);
}

.feature-card {
    background: var(--bg-primary);
    padding: var(--space-xl);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    text-align: center;
}

.feature-card i {
    font-size: var(--font-size-2xl);
    color: var(--primary-color);
    margin-bottom: var(--space-md);
}

.feature-card h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--space-sm);
}

.feature-card p {
    color: var(--text-secondary);
}

/* Canvas Section */
.canvas-section {
    padding: var(--space-xl) 0;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-xl);
}

.section-header h2 {
    font-size: var(--font-size-2xl);
    font-weight: 600;
}

.section-actions {
    display: flex;
    gap: var(--space-md);
}

.canvas-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--space-lg);
}

.canvas-card {
    background: var(--bg-primary);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
    cursor: pointer;
}

.canvas-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.canvas-card-header {
    padding: var(--space-lg);
    border-bottom: 1px solid var(--border-color);
}

.canvas-card-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--space-sm);
}

.canvas-card-description {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    margin-bottom: var(--space-md);
    line-height: 1.4;
}

.canvas-card-stats {
    display: flex;
    justify-content: space-between;
    padding: var(--space-md) var(--space-lg);
    background: var(--bg-secondary);
    font-size: var(--font-size-sm);
}

.canvas-stat {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

.canvas-stat i {
    color: var(--primary-color);
    width: 12px;
}

/* Editor Section */
.editor-section {
    padding: var(--space-xl) 0;
}

.editor-header {
    margin-bottom: var(--space-xl);
    padding-bottom: var(--space-md);
    border-bottom: 1px solid var(--border-color);
}

.editor-header-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: var(--space-md);
    flex-wrap: nowrap;
}

.editor-title {
    flex: 1;
    min-width: 0; /* Allow text to shrink */
}

.editor-title h2 {
    font-size: var(--font-size-2xl);
    font-weight: 600;
    margin-bottom: var(--space-xs);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.canvas-info {
    display: flex;
    gap: var(--space-md);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    flex-wrap: wrap;
}

.editor-actions {
    display: flex;
    gap: var(--space-sm);
    flex-shrink: 0; /* Prevent buttons from shrinking */
    align-items: flex-start;
}

.editor-actions .btn {
    white-space: nowrap;
    font-size: var(--font-size-sm);
    padding: var(--space-sm) var(--space-md);
}

.editor-layout {
    display: flex;
    flex-direction: column;
    gap: var(--space-xl);
    min-height: 600px;
}

/* Editor Panel */
.editor-panel {
    background: var(--bg-primary);
    border-radius: var(--border-radius-lg);
    padding: var(--space-lg);
    box-shadow: var(--shadow-md);
}

.editor-tools {
    margin-bottom: var(--space-lg);
}

.editor-tools h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--space-md);
}

.tool-group {
    display: flex;
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
}

.tool-btn {
    width: 40px;
    height: 40px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--bg-secondary);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

.tool-btn:hover,
.tool-btn.active {
    border-color: var(--primary-color);
    background: var(--primary-color);
    color: var(--text-white);
}

.color-palette h4 {
    font-size: var(--font-size-md);
    font-weight: 600;
    margin-bottom: var(--space-sm);
}

.color-grid {
    display: grid;
    grid-template-columns: repeat(8, 1fr);
    gap: var(--space-xs);
    margin-bottom: var(--space-md);
}

.color-square {
    width: 24px;
    height: 24px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.color-square:hover,
.color-square.active {
    border-color: var(--primary-color);
    transform: scale(1.1);
}



.canvas-container {
    position: relative;
    text-align: center;
}

.canvas-container canvas {
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--bg-primary);
    cursor: crosshair;
}

/* Integrated Canvas with Neighbors */
.integrated-canvas-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px; /* Minimal gap for seamless connection */
    margin-top: var(--space-lg);
}

.neighbor-row {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 2px; /* Minimal gap for seamless connection */
}

.main-canvas-container {
    position: relative;
    text-align: center;
    border: 2px solid var(--primary-color);
    border-radius: var(--border-radius);
    padding: var(--space-sm);
    background: var(--bg-secondary);
}

.main-canvas-container canvas {
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    background: var(--bg-primary);
    cursor: crosshair;
    display: block;
}

.canvas-label {
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: var(--space-xs);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.canvas-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    padding: var(--space-sm);
}

.position-indicator {
    background: rgba(0, 0, 0, 0.8);
    color: var(--text-white);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--border-radius-sm);
    font-size: var(--font-size-xs);
    font-family: 'Courier New', monospace;
}

/* Shared Panel - Removed from simplified editor */

/* Neighbor Panel */
.neighbor-panel {
    background: var(--bg-primary);
    border-radius: var(--border-radius-lg);
    padding: var(--space-lg);
    box-shadow: var(--shadow-md);
    display: flex;
    flex-direction: column;
}

.neighbor-header {
    margin-bottom: var(--space-lg);
    text-align: center;
}

.neighbor-header h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--space-xs);
}

.neighbor-subtitle {
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
}

.neighbor-grid {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    flex: 1;
}

.neighbor-row {
    display: flex;
    justify-content: center;
    gap: var(--space-sm);
}

.neighbor-cell {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-sm);
    border: none;
    border-radius: var(--border-radius-sm);
    background: transparent;
    transition: all var(--transition-fast);
    opacity: 0.9;
}

.neighbor-cell:hover {
    opacity: 1;
    transform: scale(1.02);
}

.neighbor-canvas {
    border: none;
    border-radius: var(--border-radius-sm);
    background: var(--bg-primary);
    image-rendering: pixelated;
    image-rendering: -moz-crisp-edges;
    image-rendering: crisp-edges;
    display: block;
}

.neighbor-cell.empty {
    border: none;
    background: transparent;
    opacity: 0.6;
}

.neighbor-cell.current {
    border: none;
    background: rgba(99, 102, 241, 0.05);
    color: var(--text-primary);
    border-radius: var(--border-radius);
}

.neighbor-cell.has-tile {
    border: none;
    background: transparent;
    opacity: 1;
}

.neighbor-label {
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-align: center;
}

.neighbor-canvas {
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    background: var(--bg-primary);
    image-rendering: pixelated;
    image-rendering: -moz-crisp-edges;
    image-rendering: crisp-edges;
}

.neighbor-cell.current .neighbor-canvas {
    border: none;
}

.neighbor-cell.has-tile .neighbor-canvas {
    border-color: var(--success-color);
}

.user-list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.user-chip {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-xs) var(--space-sm);
    background: var(--bg-secondary);
    border-radius: var(--border-radius-sm);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.user-chip .user-avatar {
    width: 20px;
    height: 20px;
    font-size: var(--font-size-xs);
}

/* Modals */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-fast);
}

.modal.active {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background: var(--bg-primary);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    transform: scale(0.9);
    transition: transform var(--transition-fast);
}

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

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

.modal-header h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
}

.close-btn {
    background: none;
    border: none;
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    cursor: pointer;
    padding: var(--space-sm);
    border-radius: var(--border-radius);
    transition: color var(--transition-fast);
}

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

/* Forms */
form {
    padding: var(--space-lg);
}

.form-group {
    margin-bottom: var(--space-md);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-md);
}

.form-group label {
    display: block;
    margin-bottom: var(--space-sm);
    font-weight: 500;
    color: var(--text-primary);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: var(--space-sm) var(--space-md);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: var(--font-size-sm);
    transition: border-color var(--transition-fast);
}

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

.form-group textarea {
    resize: vertical;
}

.form-group input[type="checkbox"] {
    width: auto;
    margin-right: var(--space-sm);
}

/* Toast Notifications */
.toast {
    position: fixed;
    bottom: var(--space-lg);
    right: var(--space-lg);
    background: var(--bg-primary);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    padding: var(--space-md);
    max-width: 300px;
    z-index: 3000;
    transform: translateX(100%);
    transition: transform var(--transition-fast);
}

.toast.show {
    transform: translateX(0);
}

.toast-content {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.toast-icon {
    font-size: var(--font-size-lg);
}

.toast.success {
    border-left: 4px solid var(--success-color);
}

.toast.success .toast-icon {
    color: var(--success-color);
}

.toast.error {
    border-left: 4px solid var(--error-color);
}

.toast.error .toast-icon {
    color: var(--error-color);
}

.toast.warning {
    border-left: 4px solid var(--warning-color);
}

.toast.warning .toast-icon {
    color: var(--warning-color);
}

.toast.info {
    border-left: 4px solid var(--info-color);
}

.toast.info .toast-icon {
    color: var(--info-color);
}

/* Responsive Design */
@media (max-width: 768px) {
    .main-content {
        padding: var(--space-md);
    }
    
    .nav-container {
        padding: 0 var(--space-sm);
    }
    
    .nav-menu {
        gap: var(--space-sm);
    }
    
    .section-header {
        flex-direction: column;
        gap: var(--space-md);
        align-items: flex-start;
    }
    
    .editor-layout {
        gap: var(--space-md);
    }
    
    .integrated-canvas-container {
        gap: var(--space-sm);
    }
    
    .neighbor-row {
        flex-direction: column;
        gap: var(--space-sm);
    }
    
    .main-canvas-container {
        padding: var(--space-sm);
    }
    
    .main-canvas-container canvas {
        max-width: 100%;
        height: auto;
    }
    
    .feature-grid {
        grid-template-columns: 1fr;
    }
    
    .canvas-grid {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .welcome-container h1 {
        font-size: var(--font-size-2xl);
    }
    
    .btn-large {
        padding: var(--space-md);
        font-size: var(--font-size-md);
    }
    
    .modal-content {
        margin: var(--space-md);
        width: calc(100% - 2rem);
    }
}

/* Animation Classes */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideIn {
    from {
        transform: translateX(-100%);
    }
    to {
        transform: translateX(0);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

.animate-fade-in {
    animation: fadeIn 0.5s ease-out;
}

.animate-slide-in {
    animation: slideIn 0.3s ease-out;
}

.animate-pulse {
    animation: pulse 2s ease-in-out infinite;
}

/* Pixel Art Specific Styles */
.pixel-canvas {
    image-rendering: pixelated;
    image-rendering: -moz-crisp-edges;
    image-rendering: crisp-edges;
}

.tile-preview {
    width: 64px;
    height: 64px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    image-rendering: pixelated;
    image-rendering: -moz-crisp-edges;
    image-rendering: crisp-edges;
}

/* Gallery Styles */
.gallery-filters {
    display: flex;
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
}

.filter-btn {
    padding: var(--space-sm) var(--space-md);
    border: 1px solid var(--border-color);
    background: var(--bg-secondary);
    color: var(--text-secondary);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--primary-color);
    color: var(--text-white);
    border-color: var(--primary-color);
}

.tile-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: var(--space-lg);
}

.tile-card {
    background: var(--bg-primary);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-fast);
}

.tile-card:hover {
    transform: translateY(-2px);
}

.tile-card-image {
    width: 100%;
    height: 200px;
    background: var(--bg-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    border-bottom: 1px solid var(--border-color);
}

.tile-card-content {
    padding: var(--space-md);
}

.tile-card-title {
    font-weight: 600;
    margin-bottom: var(--space-sm);
}

.tile-card-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.tile-likes {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.tile-likes i {
    color: var(--error-color);
} 

/* Canvas Grid Enhancements */
.loading, .error {
    text-align: center;
    padding: var(--space-xl);
    color: var(--text-secondary);
    font-style: italic;
}

.error {
    color: var(--error-color);
}

.empty-state {
    text-align: center;
    padding: var(--space-xl);
    color: var(--text-secondary);
}

.empty-state h3 {
    margin-bottom: var(--space-sm);
    color: var(--text-primary);
}

.empty-state p {
    margin-bottom: var(--space-lg);
}

.canvas-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--space-sm);
}

.canvas-card-actions {
    margin-left: var(--space-sm);
} 

/* Enhanced Login & Register Button Styles */
.nav-link.btn-primary,
.nav-link.btn-secondary {
    padding: 3px 4px;
    font-size: 16px;
    font-weight: 600;
    border-radius: 8px;
    transition: all 0.3s ease;
    text-transform: none;
    letter-spacing: 0.5px;
    border: 2px solid transparent;
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.nav-link.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-color: rgba(255, 255, 255, 0.2);
}

.nav-link.btn-primary:hover {
    background: linear-gradient(135deg, #5a67d8 0%, #6b46c1 100%);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.3);
    border-color: rgba(255, 255, 255, 0.3);
}

.nav-link.btn-secondary {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    color: white;
    border-color: rgba(255, 255, 255, 0.2);
}

.nav-link.btn-secondary:hover {
    background: linear-gradient(135deg, #3b82f6 0%, #06b6d4 100%);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(79, 172, 254, 0.3);
    border-color: rgba(255, 255, 255, 0.3);
}

.nav-link.btn-primary:active,
.nav-link.btn-secondary:active {
    transform: translateY(0);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.nav-link.btn-primary i,
.nav-link.btn-secondary i {
    font-size: 14px;
    margin-right: 8px;
    transition: transform 0.3s ease;
}

.nav-link.btn-primary:hover i,
.nav-link.btn-secondary:hover i {
    transform: scale(1.1);
}

/* Focus states for accessibility */
.nav-link.btn-primary:focus,
.nav-link.btn-secondary:focus {
    outline: 2px solid rgba(255, 255, 255, 0.5);
    outline-offset: 2px;
}

/* Mobile responsiveness */
@media (max-width: 768px) {
    .nav-link.btn-primary,
    .nav-link.btn-secondary {
        padding: 2px 3px;
        font-size: 14px;
        margin: 2px 4px;
        width: auto;
        min-width: 60px;
        border-width: 1.5px;
    }
    
    .nav-menu {
        gap: 6px;
    }
    
    .nav-item {
        width: auto;
    }
}

/* Even smaller screens - make buttons more compact */
@media (max-width: 480px) {
    .nav-link.btn-primary,
    .nav-link.btn-secondary {
        padding: 1px 2px;
        font-size: 13px;
        margin: 2px;
        border-radius: 6px;
        border-width: 1px;
        min-width: 50px;
    }
    
    .nav-link.btn-primary i,
    .nav-link.btn-secondary i {
        font-size: 12px;
        margin-right: 4px;
    }
}

/* Loading state for buttons */
.nav-link.btn-primary.loading,
.nav-link.btn-secondary.loading {
    cursor: not-allowed;
    opacity: 0.8;
    pointer-events: none;
}

.nav-link.btn-primary.loading::after,
.nav-link.btn-secondary.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top: 2px solid white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    transform: translate(-50%, -50%);
}

@keyframes spin {
    0% { transform: translate(-50%, -50%) rotate(0deg); }
    100% { transform: translate(-50%, -50%) rotate(360deg); }
} 

/* Enhanced tool buttons */
.tool-group {
    display: flex;
    gap: var(--space-sm);
    flex-wrap: wrap;
}

.tool-btn {
    width: 36px;
    height: 36px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    background: var(--bg-primary);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-sm);
}

.tool-btn:hover {
    background: var(--bg-secondary);
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: translateY(-1px);
}

.tool-btn.active {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: var(--text-white);
    box-shadow: var(--shadow-sm);
}

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

/* Tools section styling */
.tools-section {
    margin-bottom: var(--space-md);
}

.tools-section h3 {
    font-size: var(--font-size-sm);
    margin-bottom: var(--space-xs);
    color: var(--text-secondary);
}

/* Enhanced canvas info - simple and clean */
.canvas-info {
    display: flex;
    flex-wrap: nowrap;
    gap: 6px;
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    align-items: center;
    max-width: 70%;
}

.canvas-info span {
    padding: 2px 6px;
    background: var(--bg-secondary);
    border-radius: var(--border-radius-sm);
    border: 0.5px solid #d1d5db;
    white-space: nowrap;
    flex-shrink: 0;
} 

/* Palette selector */
.palette-selector {
    margin-bottom: var(--space-sm);
}

.palette-select {
    width: 100%;
    padding: var(--space-xs) var(--space-sm);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: var(--font-size-sm);
    cursor: pointer;
}

.palette-select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.1);
}

/* Enhanced color palette */
.color-palette {
    flex: 1;
    min-width: 200px;
}

.color-palette h4 {
    font-size: var(--font-size-sm);
    margin-bottom: var(--space-xs);
}

.color-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 4px;
    margin-bottom: var(--space-sm);
}

.color-square {
    width: 32px;
    height: 32px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    position: relative;
}

.color-square:hover {
    border-color: var(--primary-color);
    transform: scale(1.1);
}

.color-square.active {
    border-color: var(--primary-color);
    border-width: 3px;
    transform: scale(1.05);
}

.color-square.active::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-size: 12px;
    font-weight: bold;
    text-shadow: 1px 1px 1px rgba(0, 0, 0, 0.5);
} 

/* Compact editor tools */
.editor-tools {
    margin-bottom: var(--space-md);
    padding: var(--space-xs) 0;
}

.tools-row {
    display: flex;
    align-items: flex-start;
    gap: var(--space-lg);
}

.tools-section {
    flex-shrink: 0;
    margin-bottom: var(--space-md);
}

.tools-section h3 {
    font-size: var(--font-size-sm);
    margin-bottom: var(--space-xs);
    color: var(--text-secondary);
}

.color-palette {
    flex: 1;
    min-width: 200px;
}

.color-palette h4 {
    font-size: var(--font-size-sm);
    margin-bottom: var(--space-xs);
} 

/* Mobile responsive adjustments */
@media (max-width: 768px) {
    .editor-header-content {
        flex-direction: column;
        align-items: stretch;
        gap: var(--space-sm);
    }
    
    .editor-title h2 {
        font-size: var(--font-size-xl);
    }
    
    .canvas-info {
        gap: var(--space-sm);
    }
    
    .editor-actions {
        justify-content: flex-end;
    }
    
    .editor-actions .btn {
        flex: 1;
        max-width: 120px;
    }
}

@media (max-width: 480px) {
    .editor-actions {
        flex-direction: column;
        gap: var(--space-xs);
    }
    
    .editor-actions .btn {
        max-width: none;
    }
} 

.viewer-section {
    position: relative;
}

.viewer-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    padding: var(--space-md) 0;
    margin-bottom: var(--space-lg);
}

.viewer-actions {
    display: flex;
    gap: var(--space-sm);
    justify-content: flex-end;
    align-items: center;
}

.viewer-actions .btn {
    white-space: nowrap;
    font-size: var(--font-size-sm);
    padding: var(--space-sm) var(--space-md);
} 

/* Editor Tools */
.editor-tools {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: var(--space-lg);
    margin-bottom: var(--space-lg);
    box-shadow: var(--shadow-sm);
}

.tools-row {
    display: flex;
    gap: var(--space-xl);
    align-items: flex-start;
    justify-content: flex-start;
}

.tools-section {
    flex: 0 0 auto;
}

.tools-section h3 {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: var(--space-md);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Color Palette */
.color-palette {
    flex: 0 0 auto;
}

.color-palette h4 {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: var(--space-md);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.color-grid {
    display: grid;
    grid-template-columns: repeat(8, 1fr);
    gap: 3px;
    max-width: 180px;
}

.color-square {
    width: 20px;
    height: 20px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    position: relative;
}

.color-square:hover {
    transform: scale(1.15);
    box-shadow: var(--shadow-md);
}

.color-square.active {
    border: 2px solid var(--primary-color);
    transform: scale(1.15);
}

.color-square.active::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-size: 10px;
    font-weight: bold;
    text-shadow: 1px 1px 1px rgba(0, 0, 0, 0.5);
} 

@media (max-width: 768px) {
    .editor-tools {
        padding: var(--space-md);
        margin-bottom: var(--space-md);
    }
    
    .tools-row {
        flex-direction: column;
        gap: var(--space-lg);
        align-items: center;
    }
    
    .tools-section {
        width: 100%;
        text-align: center;
    }
    
    .color-palette {
        width: 100%;
        text-align: center;
    }
    
    .color-grid {
        max-width: 240px;
        margin: 0 auto;
    }
    
    .tool-group {
        justify-content: center;
    }
} 

@media (max-width: 480px) {
    .tools-row {
        gap: var(--space-md);
    }
    
    .color-grid {
        max-width: 200px;
    }
    
    .tool-btn {
        width: 32px;
        height: 32px;
        font-size: var(--font-size-xs);
    }
} 

/* Floating Tools Panel */
.floating-tools-panel {
    position: fixed;
    top: 64px; /* Position right against the navigation banner - adjusted from 80px */
    left: 0;
    right: 0;
    z-index: 1000;
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
    padding: 8px var(--space-lg);
    margin: 0;
    transition: transform var(--transition-normal);
    /* Ensure it stays fixed on mobile */
    transform: translateZ(0);
    -webkit-transform: translateZ(0);
    will-change: transform;
    /* Touch interaction support */
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    -khtml-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
    touch-action: manipulation;
}

.floating-tools-panel .tools-row {
    display: flex;
    gap: var(--space-md);
    align-items: center;
    justify-content: center;
    max-width: 600px;
    margin: 0 auto;
    padding: 0;
}

.floating-tools-panel .tools-section {
    flex: 0 0 auto;
    margin: 0;
    padding: 0;
}

.floating-tools-panel .tools-section h3 {
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--text-secondary);
    margin: 0 0 4px 0;
    padding: 0;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    line-height: 1;
}

.floating-tools-panel .tool-group {
    display: flex;
    gap: var(--space-xs);
    flex-wrap: wrap;
    margin: 0;
    padding: 0;
    align-items: center;
}

.floating-tools-panel .tool-btn {
    width: 32px;
    height: 32px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    background: var(--bg-primary);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-xs);
    margin: 0;
    padding: 0;
    /* Touch interaction support */
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    -khtml-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
    touch-action: manipulation;
    /* Prevent text selection on mobile */
    -webkit-tap-highlight-color: transparent;
}

.floating-tools-panel .tool-btn:hover {
    background: var(--bg-secondary);
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: translateY(-1px);
}

.floating-tools-panel .tool-btn.active {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: var(--text-white);
    box-shadow: var(--shadow-sm);
}

/* Mobile touch states */
.floating-tools-panel .tool-btn:active,
.floating-tools-panel .tool-btn.touch-active {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: var(--text-white);
    transform: scale(0.95);
    box-shadow: var(--shadow-sm);
}

/* Mobile-specific touch feedback */
@media (hover: none) and (pointer: coarse) {
    .floating-tools-panel .tool-btn:hover {
        background: var(--bg-primary);
        border-color: var(--border-color);
        color: var(--text-secondary);
        transform: none;
    }
    
    .floating-tools-panel .tool-btn:active,
    .floating-tools-panel .tool-btn.touch-active {
        background: var(--primary-color);
        border-color: var(--primary-color);
        color: var(--text-white);
        transform: scale(0.95);
        box-shadow: var(--shadow-sm);
    }
}

.floating-tools-panel .color-palette {
    flex: 0 0 auto;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.floating-tools-panel .color-palette h4 {
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--text-secondary);
    margin: 0 0 4px 0;
    padding: 0;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    line-height: 1;
}

.floating-tools-panel .color-grid {
    display: grid;
    grid-template-columns: repeat(8, 1fr);
    gap: 2px;
    max-width: 160px;
    margin: 0;
    padding: 0;
}

.floating-tools-panel .color-square {
    width: 18px;
    height: 18px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    position: relative;
    margin: 0;
    padding: 0;
    /* Touch interaction support */
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    -khtml-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
    touch-action: manipulation;
    /* Prevent text selection on mobile */
    -webkit-tap-highlight-color: transparent;
}

.floating-tools-panel .color-square:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-sm);
}

.floating-tools-panel .color-square.active {
    border: 2px solid var(--primary-color);
    transform: scale(1.1);
}

.floating-tools-panel .color-square.active::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-size: 8px;
    font-weight: bold;
    text-shadow: 1px 1px 1px rgba(0, 0, 0, 0.5);
}

/* Mobile touch states for color squares */
.floating-tools-panel .color-square:active,
.floating-tools-panel .color-square.touch-active {
    transform: scale(1.2);
    box-shadow: var(--shadow-md);
}

/* Mobile-specific touch feedback for color squares */
@media (hover: none) and (pointer: coarse) {
    .floating-tools-panel .color-square:hover {
        transform: none;
        box-shadow: none;
    }
    
    .floating-tools-panel .color-square:active,
    .floating-tools-panel .color-square.touch-active {
        transform: scale(1.2);
        box-shadow: var(--shadow-md);
    }
}

/* Adjust editor layout to account for floating panel */
.editor-section {
    padding-top: 100px; /* Reduced padding since panel is more compact */
    margin: 0;
}

/* Mobile responsive for floating panel */
@media (max-width: 768px) {
    .floating-tools-panel {
        position: fixed;
        top: 56px; /* Adjust for smaller mobile header - positioned right against it */
        left: 0;
        right: 0;
        z-index: 1000;
        padding: 6px var(--space-md);
        margin: 0;
        /* Ensure fixed positioning on mobile */
        transform: translateZ(0);
        -webkit-transform: translateZ(0);
        will-change: transform;
        /* Prevent mobile browser quirks */
        -webkit-backface-visibility: hidden;
        backface-visibility: hidden;
    }
    
    .floating-tools-panel .tools-row {
        flex-direction: column; /* Stack vertically on mobile */
        gap: var(--space-sm);
        align-items: center;
        max-width: 100%; /* Use full width */
        margin: 0 auto;
        padding: 0;
    }
    
    .floating-tools-panel .tools-section {
        flex: 0 0 auto;
        margin: 0;
        padding: 0;
        width: 100%; /* Use full width */
        display: flex;
        justify-content: center;
    }
    
    .floating-tools-panel .color-palette {
        flex: 0 0 auto;
        margin: 0;
        padding: 0;
        width: 100%; /* Use full width */
        display: flex;
        justify-content: center;
    }
    
    .floating-tools-panel .color-grid {
        max-width: 200px; /* Allow more width since it's stacked */
        margin: 0;
        padding: 0;
    }
    
    .floating-tools-panel .tool-group {
        justify-content: center;
        margin: 0;
        padding: 0;
    }
    
    .editor-section {
        padding-top: 140px; /* Increased padding for stacked layout */
        margin: 0;
    }
}

@media (max-width: 480px) {
    .floating-tools-panel {
        position: fixed;
        top: 52px; /* Even tighter positioning for very small screens */
        left: 0;
        right: 0;
        z-index: 1000;
        padding: 4px var(--space-md);
        margin: 0;
        /* Ensure fixed positioning on mobile */
        transform: translateZ(0);
        -webkit-transform: translateZ(0);
        will-change: transform;
        /* Prevent mobile browser quirks */
        -webkit-backface-visibility: hidden;
        backface-visibility: hidden;
    }
    
    .floating-tools-panel .tools-row {
        flex-direction: column; /* Keep stacked on very small screens */
        gap: var(--space-xs);
        max-width: 100%;
        margin: 0 auto;
        padding: 0;
    }
    
    .floating-tools-panel .tools-section {
        width: 100%;
        justify-content: center;
        margin: 0;
        padding: 0;
    }
    
    .floating-tools-panel .color-palette {
        width: 100%;
        justify-content: center;
        margin: 0;
        padding: 0;
    }
    
    .floating-tools-panel .color-grid {
        max-width: 180px; /* Slightly smaller but still visible */
        margin: 0;
        padding: 0;
    }
    
    .floating-tools-panel .tool-btn {
        width: 28px;
        height: 28px;
        font-size: var(--font-size-xs);
        margin: 0;
        padding: 0;
    }
    
    .floating-tools-panel .color-square {
        width: 16px;
        height: 16px;
        margin: 0;
        padding: 0;
    }
    
    .editor-section {
        padding-top: 120px; /* Adjusted padding for very small screens */
        margin: 0;
    }
}