/* Collaborative Whiteboard Tutorial - Anthropic-Inspired Minimal Styles */

/* CSS Custom Properties for Clean, Minimal Theme */
:root {
    /* Anthropic-inspired neutral palette */
    --primary-bg: #ffffff;
    --secondary-bg: #fafafa;
    --tertiary-bg: #f5f5f5;
    --text-primary: #1a1a1a;
    --text-secondary: #666666;
    --text-muted: #999999;
    --border-color: #e5e5e5;
    --border-light: #f0f0f0;
    --border-medium: #d0d0d0;
    --border-hover: #b0b0b0;
    --hover-bg: #f8f8f8;
    --focus-ring: rgba(26, 26, 26, 0.1);
    
    /* Minimal accent colors - muted and professional */
    --accent-primary: #2d2d2d;
    --accent-success: #4a5d23;
    --accent-warning: #8b6914;
    --accent-danger: #7a2e2e;
    --accent-info: #2d4a5d;
    
    /* Whiteboard specific colors */
    --canvas-bg: #ffffff;
    --canvas-border: #d0d0d0;
    --tool-active: #007bff;
    --tool-hover: #0056b3;
    
    /* Subtle shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.03);
    --shadow-md: 0 2px 4px 0 rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 4px 8px 0 rgba(0, 0, 0, 0.08);
    
    /* Spacing system */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    
    /* Border radius - minimal */
    --border-radius-sm: 0.125rem;
    --border-radius: 0.25rem;
    --border-radius-lg: 0.375rem;
    
    /* Typography */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    --font-mono: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, monospace;
}

/* Dark theme - subtle and professional */
.theme-dark {
    --primary-bg: #0f0f0f;
    --secondary-bg: #1a1a1a;
    --tertiary-bg: #262626;
    --text-primary: #f0f0f0;
    --text-secondary: #b0b0b0;
    --text-muted: #808080;
    --border-color: #333333;
    --border-light: #262626;
    --border-medium: #404040;
    --border-hover: #666666;
    --hover-bg: #1f1f1f;
    --focus-ring: rgba(240, 240, 240, 0.1);
    
    --accent-primary: #e0e0e0;
    --accent-success: #7a9b3a;
    --accent-warning: #b8941f;
    --accent-danger: #a64444;
    --accent-info: #4a6b85;
    
    --canvas-bg: #1a1a1a;
    --canvas-border: #404040;
}

/* Base styles */
* {
    box-sizing: border-box;
}

body {
    font-family: var(--font-family);
    background: var(--primary-bg);
    color: var(--text-primary);
    margin: 0;
    padding: 0;
    line-height: 1.5;
    transition: background-color 0.15s ease, color 0.15s ease;
    font-size: 14px;
}

/* Navigation Styles - Match chat tutorial */
.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    height: 32px;
    width: auto;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2rem;
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 400;
    transition: color 0.2s ease;
    font-size: 0.95rem;
}

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

/* Responsive Navigation */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
}

/* Tutorial Header */
.tutorial-header {
    background: var(--primary-bg);
    border-bottom: 1px solid var(--border-color);
    padding: var(--space-6) 0;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-8);
}

.tutorial-info h1 {
    margin: 0 0 var(--space-1) 0;
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
}

.tutorial-info p {
    margin: 0;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.tutorial-actions {
    display: flex;
    gap: var(--space-3);
}

.tutorial-actions .btn {
    padding: var(--space-2) var(--space-4);
    font-weight: 500;
    border-radius: var(--border-radius);
    transition: all 0.15s ease;
    font-size: 13px;
    white-space: nowrap;
}

/* Tutorial Container */
.tutorial-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--space-8) var(--space-6);
}

/* Tutorial Sections */
.tutorial-section {
    margin-bottom: var(--space-8);
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--space-6);
    padding-bottom: var(--space-4);
    border-bottom: 1px solid var(--border-light);
}

.section-header h2,
.section-header h3 {
    color: var(--text-primary);
    font-weight: 600;
    margin: 0 0 var(--space-2) 0;
    font-family: var(--font-family);
}

.section-header h2 {
    font-size: 28px;
}

.section-header h3 {
    font-size: 20px;
}

.section-header p {
    color: var(--text-secondary);
    margin: 0;
    font-size: 14px;
    line-height: 1.5;
}

.section-actions {
    display: flex;
    gap: var(--space-3);
    flex-shrink: 0;
}

/* Feature Grid */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-6);
    margin-top: var(--space-6);
}

.feature-card {
    background: var(--secondary-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: var(--space-6);
    text-align: center;
    transition: all 0.15s ease;
    box-shadow: var(--shadow-sm);
}

.feature-card:hover {
    border-color: var(--border-medium);
    box-shadow: var(--shadow-md);
}

.feature-icon {
    width: 48px;
    height: 48px;
    background: var(--accent-primary);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--space-4);
    color: var(--primary-bg);
    font-size: 20px;
}

.feature-card h4 {
    color: var(--text-primary);
    font-size: 16px;
    font-weight: 600;
    margin-bottom: var(--space-3);
    font-family: var(--font-family);
}

.feature-card p {
    color: var(--text-secondary);
    margin: 0;
    line-height: 1.4;
    font-size: 13px;
}

/* Whiteboard Demo */
.whiteboard-demo {
    background: var(--secondary-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: var(--space-6);
    box-shadow: var(--shadow-sm);
    margin-top: var(--space-6);
}

/* Whiteboard Header */
.whiteboard-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-6);
    padding-bottom: var(--space-4);
    border-bottom: 1px solid var(--border-light);
}

.whiteboard-info h4 {
    color: var(--text-primary);
    font-size: 18px;
    font-weight: 600;
    margin-bottom: var(--space-1);
    font-family: var(--font-family);
}

.whiteboard-info p {
    color: var(--text-secondary);
    font-size: 13px;
    margin: 0;
}

.whiteboard-controls {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.connection-indicator {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-3);
    background: var(--tertiary-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 12px;
}

.connection-indicator #connection-indicator {
    color: var(--tool-active);
    font-size: 8px;
    animation: pulse 2s infinite;
}

.connection-indicator span {
    color: var(--text-secondary);
    font-weight: 500;
}

.user-count {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-3);
    background: var(--tertiary-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 12px;
    color: var(--text-secondary);
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

/* Tools Section */
.tools-section {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-6);
    margin-bottom: var(--space-6);
    padding: var(--space-4);
    background: var(--tertiary-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
}

.tool-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.tool-label {
    font-size: 11px;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: var(--space-1);
}

.tool-buttons {
    display: flex;
    gap: var(--space-1);
}

.tool-btn {
    width: 36px;
    height: 36px;
    border: 1px solid var(--border-color);
    background: var(--secondary-bg);
    border-radius: var(--border-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.15s ease;
    color: var(--text-secondary);
    font-size: 14px;
}

.tool-btn:hover {
    border-color: var(--tool-hover);
    background: var(--hover-bg);
    color: var(--tool-hover);
}

.tool-btn.active {
    border-color: var(--tool-active);
    background: var(--tool-active);
    color: var(--primary-bg);
    box-shadow: 0 0 0 2px rgba(0, 123, 255, 0.2);
}

.color-palette {
    display: flex;
    gap: var(--space-1);
    flex-wrap: wrap;
}

.color-btn {
    width: 24px;
    height: 24px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: all 0.15s ease;
    position: relative;
}

.color-btn:hover {
    transform: scale(1.1);
    border-color: var(--border-medium);
}

.color-btn.active {
    border-color: var(--tool-active);
    box-shadow: 0 0 0 2px rgba(0, 123, 255, 0.3);
    transform: scale(1.1);
}

.custom-color-input {
    width: 32px;
    height: 24px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    background: none;
    padding: 0;
}

.size-controls {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.size-slider {
    width: 100px;
    height: 4px;
    background: var(--border-color);
    border-radius: 2px;
    outline: none;
    cursor: pointer;
}

.size-slider::-webkit-slider-thumb {
    appearance: none;
    width: 16px;
    height: 16px;
    background: var(--tool-active);
    border-radius: 50%;
    cursor: pointer;
}

.size-slider::-moz-range-thumb {
    width: 16px;
    height: 16px;
    background: var(--tool-active);
    border-radius: 50%;
    cursor: pointer;
    border: none;
}

.size-display {
    font-size: 11px;
    color: var(--text-secondary);
    font-weight: 500;
    min-width: 30px;
}

.action-buttons {
    display: flex;
    gap: var(--space-1);
}

.action-btn {
    width: 36px;
    height: 36px;
    border: 1px solid var(--border-color);
    background: var(--secondary-bg);
    border-radius: var(--border-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.15s ease;
    color: var(--text-secondary);
    font-size: 14px;
}

.action-btn:hover {
    border-color: var(--border-medium);
    background: var(--hover-bg);
    color: var(--text-primary);
}

.action-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Canvas Section */
.canvas-section {
    margin-bottom: var(--space-6);
}

.canvas-container {
    position: relative;
    background: var(--canvas-bg);
    border: 2px solid var(--canvas-border);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    width: 100%;
    max-width: 100%;
}

#whiteboard-canvas {
    display: block;
    cursor: crosshair;
    width: 100%;
    height: auto;
    max-width: 100%;
}

.cursors-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 10;
}

.remote-cursor {
    position: absolute;
    width: 20px;
    height: 20px;
    pointer-events: none;
    transition: all 0.1s ease;
    z-index: 11;
}

.remote-cursor::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 0;
    height: 0;
    border-left: 10px solid;
    border-right: 10px solid transparent;
    border-bottom: 15px solid transparent;
    transform: rotate(-45deg);
}

.remote-cursor::after {
    content: attr(data-user);
    position: absolute;
    top: 20px;
    left: 0;
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 2px 6px;
    border-radius: 3px;
    font-size: 10px;
    white-space: nowrap;
    pointer-events: none;
}

.canvas-info {
    position: absolute;
    bottom: var(--space-2);
    right: var(--space-2);
    background: rgba(0, 0, 0, 0.7);
    color: white;
    padding: var(--space-1) var(--space-2);
    border-radius: var(--border-radius-sm);
    font-size: 10px;
    display: flex;
    gap: var(--space-3);
}

/* Users Section */
.users-section {
    background: var(--tertiary-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: var(--space-4);
    box-shadow: var(--shadow-sm);
}

.users-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-4);
}

.users-header h5 {
    color: var(--text-primary);
    font-size: 14px;
    font-weight: 600;
    margin: 0;
    font-family: var(--font-family);
}

.users-controls {
    display: flex;
    gap: var(--space-2);
}

.users-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.user-item {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3);
    background: var(--secondary-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    transition: all 0.15s ease;
}

.user-item:hover {
    border-color: var(--border-medium);
    box-shadow: var(--shadow-sm);
}

.user-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 14px;
    flex-shrink: 0;
}

.user-info {
    flex: 1;
    min-width: 0;
}

.user-name {
    font-size: 12px;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 2px;
}

.user-status {
    font-size: 10px;
    color: var(--text-muted);
}

.user-cursor-color {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    border: 1px solid var(--border-color);
    flex-shrink: 0;
}

/* Implementation Steps */
.implementation-steps {
    display: grid;
    gap: var(--space-6);
    margin-top: var(--space-6);
}

.step-card {
    background: var(--secondary-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: var(--space-6);
    display: flex;
    gap: var(--space-4);
    transition: all 0.15s ease;
    box-shadow: var(--shadow-sm);
}

.step-card:hover {
    border-color: var(--border-medium);
    box-shadow: var(--shadow-md);
}

.step-number {
    width: 32px;
    height: 32px;
    background: var(--accent-primary);
    color: var(--primary-bg);
    border-radius: var(--border-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 600;
    flex-shrink: 0;
}

.step-content {
    flex: 1;
}

.step-content h4 {
    color: var(--text-primary);
    font-size: 16px;
    font-weight: 600;
    margin-bottom: var(--space-2);
    font-family: var(--font-family);
}

.step-content p {
    color: var(--text-secondary);
    margin-bottom: var(--space-4);
    line-height: 1.4;
    font-size: 13px;
}

.code-preview {
    background: var(--tertiary-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    padding: var(--space-4);
    overflow-x: auto;
}

.code-preview pre {
    margin: 0;
    font-family: var(--font-mono);
    font-size: 12px;
    line-height: 1.4;
    color: var(--text-primary);
}

.code-preview code {
    color: var(--text-primary);
}

/* Tutorial Actions Section (different from header tutorial-actions) */
.tutorial-actions-section {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-6);
    margin-top: var(--space-8);
    padding-top: var(--space-8);
    border-top: 1px solid var(--border-light);
}

.action-card {
    background: var(--secondary-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: var(--space-6);
    text-align: center;
    transition: all 0.15s ease;
    box-shadow: var(--shadow-sm);
}

.action-card:hover {
    border-color: var(--border-medium);
    box-shadow: var(--shadow-md);
}

.action-card h4 {
    color: var(--text-primary);
    font-size: 16px;
    font-weight: 600;
    margin-bottom: var(--space-3);
    font-family: var(--font-family);
}

.action-card p {
    color: var(--text-secondary);
    margin-bottom: var(--space-4);
    line-height: 1.4;
    font-size: 13px;
}

.action-card .btn {
    padding: var(--space-3) var(--space-5);
    font-weight: 500;
    border-radius: var(--border-radius);
}

/* Modal Styles */
.modal-content {
    background: var(--secondary-bg);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

.modal-header {
    border-bottom: 1px solid var(--border-light);
}

.modal-title {
    color: var(--text-primary);
    font-family: var(--font-family);
}

.modal-body {
    color: var(--text-primary);
}

/* Button Styles - Clean and minimal */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-2) var(--space-4);
    border: 1px solid transparent;
    border-radius: var(--border-radius);
    font-size: 13px;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.15s ease;
    gap: var(--space-2);
    font-family: var(--font-family);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

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

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

.btn-secondary {
    background: var(--tertiary-bg);
    color: var(--text-primary);
    border-color: var(--border-color);
}

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

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

.btn-success:hover {
    opacity: 0.9;
    color: var(--primary-bg);
}

.btn-outline-light {
    background: transparent;
    color: var(--text-primary);
    border-color: var(--border-color);
}

.btn-outline-light:hover {
    background: var(--hover-bg);
    border-color: var(--border-medium);
    color: var(--text-primary);
}

.btn-outline-primary {
    background: transparent;
    color: var(--accent-primary);
    border-color: var(--accent-primary);
}

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

.btn-light {
    background: var(--secondary-bg);
    color: var(--text-primary);
    border-color: var(--border-color);
}

.btn-light:hover {
    background: var(--tertiary-bg);
    border-color: var(--border-medium);
    color: var(--text-primary);
}

.btn-outline {
    background: transparent;
    color: var(--accent-primary);
    border-color: var(--accent-primary);
}

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

.btn-ghost {
    background: transparent;
    border: none;
    color: var(--text-secondary);
}

.btn-ghost:hover {
    background: var(--hover-bg);
    color: var(--text-primary);
}

.btn-sm {
    padding: var(--space-1) var(--space-3);
    font-size: 11px;
}

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

/* Utility Classes */
.text-muted {
    color: var(--text-muted) !important;
}

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

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

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

/* Container */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--space-6);
}

/* Responsive Design */
@media (max-width: 1200px) {
    .tools-section {
        flex-direction: column;
        gap: var(--space-4);
    }
    
    .tool-group {
        flex-direction: row;
        align-items: center;
        gap: var(--space-4);
    }
    
    .tool-label {
        min-width: 60px;
        margin-bottom: 0;
    }
}

@media (max-width: 768px) {
    .tutorial-container {
        padding: var(--space-6) var(--space-4);
    }
    
    .tutorial-nav {
        flex-direction: column;
        gap: var(--space-4);
        text-align: center;
    }
    
    .tutorial-title h1 {
        font-size: 20px;
    }
    
    .tutorial-actions {
        flex-direction: column;
        width: 100%;
    }
    
    .section-header {
        flex-direction: column;
        gap: var(--space-4);
        align-items: flex-start;
    }
    
    .whiteboard-header {
        flex-direction: column;
        gap: var(--space-4);
        text-align: center;
    }
    
    .whiteboard-controls {
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .tools-section {
        padding: var(--space-3);
    }
    
    .tool-group {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-2);
    }
    
    .tool-label {
        min-width: auto;
    }
    
    .canvas-container {
        border-width: 1px;
    }
    
    #whiteboard-canvas {
        max-height: 400px;
    }
    
    .step-card {
        flex-direction: column;
        text-align: center;
    }
    
    .step-number {
        align-self: center;
    }
    
    .tutorial-actions {
        grid-template-columns: 1fr;
    }
    
    .container {
        padding: 0 var(--space-4);
    }
}

@media (max-width: 480px) {
    .tutorial-container {
        padding: var(--space-4) var(--space-3);
    }
    
    .tutorial-header {
        padding: var(--space-4) 0;
    }
    
    .tutorial-title h1 {
        font-size: 18px;
    }
    
    .tutorial-title p {
        font-size: 13px;
    }
    
    .feature-grid {
        grid-template-columns: 1fr;
        gap: var(--space-4);
    }
    
    .tools-section {
        padding: var(--space-2);
        gap: var(--space-3);
    }
    
    .tool-buttons {
        flex-wrap: wrap;
    }
    
    .color-palette {
        max-width: 200px;
    }
    
    .canvas-info {
        flex-direction: column;
        gap: var(--space-1);
    }
    
    .whiteboard-demo {
        padding: var(--space-4);
    }
    
    .step-card {
        padding: var(--space-4);
    }
    
    .action-card {
        padding: var(--space-4);
    }
    
    .container {
        padding: 0 var(--space-3);
    }
}

/* Spinner */
.spinner-border {
    display: inline-block;
    width: 2rem;
    height: 2rem;
    vertical-align: text-bottom;
    border: 0.25em solid currentColor;
    border-right-color: transparent;
    border-radius: 50%;
    animation: spinner-border 0.75s linear infinite;
}

@keyframes spinner-border {
    to { transform: rotate(360deg); }
}

.visually-hidden {
    position: absolute !important;
    width: 1px !important;
    height: 1px !important;
    padding: 0 !important;
    margin: -1px !important;
    overflow: hidden !important;
    clip: rect(0, 0, 0, 0) !important;
    white-space: nowrap !important;
    border: 0 !important;
}

/* Footer Styles - Dark footer to match chat tutorial */
.footer {
    background-color: #111827 !important;
    color: #d1d5db !important;
    padding: 3rem 2rem 2rem;
    margin-top: auto;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h4 {
    color: white;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.footer-section ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-section li {
    margin-bottom: 0.5rem;
}

.footer-section a {
    color: #9ca3af;
    text-decoration: none;
    font-size: 0.875rem;
    transition: color 0.2s ease;
}

.footer-section a:hover {
    color: #d1d5db;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 2rem;
    border-top: 1px solid #374151;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-bottom-left {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.footer-bottom-left p {
    color: #9ca3af !important;
    font-size: 0.875rem;
    margin: 0;
    line-height: 1.4;
}

.footer-bottom-links {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.footer-bottom-links a {
    color: #9ca3af !important;
    text-decoration: none;
    font-size: 0.875rem;
    transition: color 0.2s ease;
}

.footer-bottom-links a:hover {
    color: #d1d5db !important;
}

.footer-bottom-right {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.language-selector {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: #9ca3af;
    font-size: 0.875rem;
    cursor: pointer;
    transition: color 0.2s ease;
}

.language-selector:hover {
    color: #d1d5db;
}

.language-selector i {
    font-size: 0.875rem;
    color: #9ca3af;
}

/* Tutorial Sidebar */
.tutorial-sidebar {
    position: fixed;
    top: 0;
    right: -400px;
    width: 400px;
    height: 100vh;
    background: var(--primary-bg);
    border-left: 1px solid var(--border-color);
    box-shadow: var(--shadow-lg);
    transition: right 0.3s ease;
    z-index: 1000;
    overflow-y: auto;
}

.tutorial-sidebar.open {
    right: 0;
}

.sidebar-header {
    background: var(--accent-primary);
    color: var(--primary-bg);
    padding: var(--space-4);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.sidebar-header h3 {
    margin: 0;
    font-size: 1rem;
    font-weight: 600;
}

.sidebar-content {
    padding: var(--space-4);
}

.tutorial-step {
    background: var(--secondary-bg);
    border-radius: var(--border-radius);
    padding: var(--space-4);
    margin-bottom: var(--space-4);
    border-left: 3px solid var(--border-color);
    transition: var(--transition);
}

.tutorial-step.active {
    border-left-color: var(--accent-primary);
    background: rgba(45, 45, 45, 0.05);
}

.tutorial-step.completed {
    border-left-color: var(--accent-success);
    background: rgba(74, 93, 35, 0.05);
}

.tutorial-step h4 {
    margin: 0 0 var(--space-2) 0;
    font-size: 0.9rem;
    font-weight: 600;
}

.tutorial-step p {
    margin: 0 0 var(--space-3) 0;
    color: var(--text-secondary);
    font-size: 0.875rem;
    line-height: 1.4;
}

.code-preview {
    background: var(--tertiary-bg);
    border-radius: var(--border-radius-sm);
    padding: var(--space-3);
    margin-top: var(--space-2);
    border: 1px solid var(--border-color);
}

.code-preview pre {
    margin: 0;
    font-size: 11px;
    line-height: 1.4;
    overflow-x: auto;
    font-family: var(--font-mono);
    color: var(--text-primary);
}

.step-actions {
    margin-top: var(--space-2);
}

.sidebar-footer {
    padding: var(--space-4);
    border-top: 1px solid var(--border-light);
}

/* Tutorial Toggle Button */
.tutorial-toggle {
    position: fixed;
    top: 50%;
    right: var(--space-4);
    transform: translateY(-50%);
    background: var(--accent-primary);
    color: var(--primary-bg);
    border: none;
    border-radius: var(--border-radius);
    padding: var(--space-3);
    box-shadow: var(--shadow-md);
    cursor: pointer;
    transition: var(--transition);
    z-index: 999;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-1);
    font-size: 11px;
}

.tutorial-toggle:hover {
    background: var(--text-primary);
    transform: translateY(-50%) scale(1.05);
}

.tutorial-toggle i {
    font-size: 1rem;
}

/* Footer responsive styles */
@media (max-width: 768px) {
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
    
    .footer-bottom-links {
        justify-content: center;
    }
    
    .tutorial-sidebar {
        width: 100%;
        right: -100%;
    }
    
    .tutorial-toggle {
        right: var(--space-2);
        padding: var(--space-2);
    }
}

@media (max-width: 480px) {
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .footer-bottom-links {
        flex-direction: column;
        gap: 0.5rem;
    }
}