/* Modern Chi-Python Translator CSS */

/* Enhanced CSS Custom Properties for Modern Design */
:root {
    /* Enhanced Color Palette */
    --primary-color: #6366f1;
    --primary-hover: #5b5ff1;
    --primary-light: #a5b4fc;
    --secondary-color: #f59e0b;
    --secondary-hover: #d97706;
    --success-color: #10b981;
    --success-hover: #059669;
    --error-color: #ef4444;
    --error-hover: #dc2626;
    --warning-color: #f59e0b;
    --warning-hover: #d97706;
    --info-color: #3b82f6;
    --info-hover: #2563eb;
    
    /* Glassmorphism and Modern Effects */
    --glass-bg: rgba(255, 255, 255, 0.1);
    --glass-border: rgba(255, 255, 255, 0.2);
    --backdrop-blur: blur(20px);
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-success: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    
    /* Light theme with enhanced colors */
    --bg-primary: #fafbfc;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --bg-card: rgba(255, 255, 255, 0.95);
    --bg-elevated: #ffffff;
    --text-primary: #1a202c;
    --text-secondary: #4a5568;
    --text-muted: #718096;
    --text-accent: #6366f1;
    --border-color: #e2e8f0;
    --border-hover: #cbd5e1;
    --border-focus: #6366f1;
    
    /* Enhanced Shadows for Depth */
    --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --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);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --shadow-glow: 0 0 20px rgba(99, 102, 241, 0.3);
    --shadow-colored: 0 10px 25px rgba(99, 102, 241, 0.15);
    
    /* Enhanced Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', 'Monaco', 'SF Mono', 'Consolas', monospace;
    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --line-height-tight: 1.25;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.75;
    
    /* Enhanced Spacing System */
    --spacing-0: 0;
    --spacing-px: 1px;
    --spacing-1: 0.25rem;
    --spacing-2: 0.5rem;
    --spacing-3: 0.75rem;
    --spacing-4: 1rem;
    --spacing-5: 1.25rem;
    --spacing-6: 1.5rem;
    --spacing-8: 2rem;
    --spacing-10: 2.5rem;
    --spacing-12: 3rem;
    --spacing-16: 4rem;
    --spacing-20: 5rem;
    
    /* Enhanced Border Radius */
    --radius-none: 0;
    --radius-sm: 0.25rem;
    --radius-md: 0.375rem;
    --radius-lg: 0.5rem;
    --radius-xl: 0.75rem;
    --radius-2xl: 1rem;
    --radius-3xl: 1.5rem;
    --radius-full: 9999px;
    
    /* Enhanced Transitions & Animations */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: 500ms cubic-bezier(0.68, -0.55, 0.265, 1.55);
    --animation-duration: 0.3s;
    --animation-timing: cubic-bezier(0.4, 0, 0.2, 1);
}

/* Enhanced Dark theme */
[data-theme="dark"] {
    --bg-primary: #0f1419;
    --bg-secondary: #1a202c;
    --bg-tertiary: #2d3748;
    --bg-card: rgba(26, 32, 44, 0.95);
    --bg-elevated: #1a202c;
    --text-primary: #f7fafc;
    --text-secondary: #e2e8f0;
    --text-muted: #a0aec0;
    --text-accent: #9f7aea;
    --border-color: #2d3748;
    --border-hover: #4a5568;
    --border-focus: #9f7aea;
    
    /* Dark theme glassmorphism */
    --glass-bg: rgba(26, 32, 44, 0.3);
    --glass-border: rgba(255, 255, 255, 0.1);
    --shadow-glow: 0 0 20px rgba(159, 122, 234, 0.3);
    --shadow-colored: 0 10px 25px rgba(159, 122, 234, 0.15);
}

/* Global Styles */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.5;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    transition: background-color var(--transition-normal), color var(--transition-normal);
}

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

/* Header */
.header {
    background: var(--bg-card);
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    z-index: 100;
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-4) var(--spacing-6);
    max-width: 100%;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: var(--gradient-primary);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: var(--font-size-lg);
    box-shadow: var(--shadow-colored);
}

.logo-text h1 {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    line-height: var(--line-height-tight);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo-text span {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    font-weight: 500;
}

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

.status-indicator {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-2) var(--spacing-3);
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--success-color);
    animation: pulse 2s infinite;
}

.status-dot.connecting {
    background: var(--warning-color);
}

.status-dot.disconnected {
    background: var(--error-color);
}

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

.theme-toggle, .settings-btn {
    width: 40px;
    height: 40px;
    border: none;
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.theme-toggle:hover, .settings-btn:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    transform: translateY(-1px);
}

.theme-toggle .fa-sun {
    display: none;
}

[data-theme="dark"] .theme-toggle .fa-sun {
    display: inline-block;
}

[data-theme="dark"] .theme-toggle .fa-moon {
    display: none;
}

/* Navigation Tabs */
.nav-tabs {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: 0 var(--spacing-6);
}

.tab-list {
    display: flex;
    gap: var(--spacing-2);
}

.tab-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-3) var(--spacing-4);
    border: none;
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
    border-radius: var(--radius-md) var(--radius-md) 0 0;
    transition: all var(--transition-fast);
    position: relative;
}

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

.tab-btn.active {
    color: var(--text-primary);
    background: var(--bg-card);
    border-bottom: 2px solid var(--primary-color);
}

/* Main Content */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    background: var(--bg-primary);
}

.tab-content {
    display: none;
    flex: 1;
    overflow: hidden;
}

.tab-content.active {
    display: flex;
    flex-direction: column;
}

/* Control Panel */
.control-panel {
    display: flex;
    align-items: center;
    gap: var(--spacing-6);
    padding: var(--spacing-4) var(--spacing-6);
    background: var(--bg-card);
    border-bottom: 1px solid var(--border-color);
    flex-wrap: wrap;
}

.control-group {
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
}

.translation-mode {
    display: flex;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-1);
}

.mode-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-2) var(--spacing-4);
    border: none;
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    font-size: var(--font-size-sm);
    font-weight: 500;
}

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

.mode-btn:not(.active):hover {
    color: var(--text-secondary);
    background: var(--bg-tertiary);
}

.toggle-switches {
    display: flex;
    gap: var(--spacing-4);
}

.switch {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    cursor: pointer;
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.switch input {
    display: none;
}

.slider {
    width: 40px;
    height: 20px;
    background: var(--bg-tertiary);
    border-radius: 20px;
    position: relative;
    transition: background var(--transition-fast);
}

.slider::before {
    content: '';
    position: absolute;
    width: 16px;
    height: 16px;
    background: white;
    border-radius: 50%;
    top: 2px;
    left: 2px;
    transition: transform var(--transition-fast);
    box-shadow: var(--shadow-sm);
}

.switch input:checked + .slider {
    background: var(--primary-color);
}

.switch input:checked + .slider::before {
    transform: translateX(20px);
}

.action-buttons {
    display: flex;
    gap: var(--spacing-3);
    align-items: center;
    flex-wrap: wrap;
}

.file-actions {
    display: flex;
    gap: var(--spacing-2);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-2) var(--spacing-4);
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
    white-space: nowrap;
}

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

.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

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

.btn-success:hover {
    background: #059669;
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

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

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

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

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

/* Editor Container */
.editor-container {
    display: flex;
    flex: 1;
    overflow: hidden;
    position: relative;
}

.editor-panel {
    flex: 1;
    display: flex;
    flex-direction: column;
    background: var(--bg-card);
}

/* Fullscreen editor panel */
.editor-panel.fullscreen {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1000;
    background: var(--bg-card);
    border-radius: 0;
}

.editor-panel.fullscreen .editor-header {
    padding: var(--spacing-4) var(--spacing-6);
}

.editor-panel.fullscreen .editor-btn {
    width: 36px;
    height: 36px;
}

.editor-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-3) var(--spacing-4);
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
}

.editor-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    font-weight: 600;
    color: var(--text-primary);
}

.editor-actions {
    display: flex;
    gap: var(--spacing-2);
}

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

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

.editor-wrapper {
    flex: 1;
    position: relative;
    overflow: hidden;
}

.monaco-editor {
    width: 100% !important;
    height: 100% !important;
}

.editor-divider {
    width: 1px;
    background: var(--border-color);
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.divider-line {
    position: absolute;
    top: 0;
    bottom: 0;
    width: 1px;
    background: var(--border-color);
}

.swap-btn {
    width: 40px;
    height: 40px;
    border: 1px solid var(--border-color);
    background: var(--bg-card);
    border-radius: 50%;
    color: var(--text-muted);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    z-index: 10;
}

.swap-btn:hover {
    background: var(--primary-color);
    color: white;
    transform: rotate(180deg);
}

/* Output Panel */
.output-panel {
    background: var(--bg-card);
    border-top: 1px solid var(--border-color);
    max-height: 300px;
    min-height: 200px;
    display: flex;
    flex-direction: column;
    transition: all var(--transition-normal);
}

.output-panel.collapsed {
    max-height: 40px;
    min-height: 40px;
}

.output-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-3) var(--spacing-4);
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
}

.output-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    font-weight: 600;
    color: var(--text-primary);
}

.output-actions {
    display: flex;
    gap: var(--spacing-2);
}

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

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

.output-content {
    flex: 1;
    padding: var(--spacing-4);
    font-family: var(--font-mono);
    font-size: var(--font-size-sm);
    overflow-y: auto;
    background: var(--bg-primary);
}

.output-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: var(--text-muted);
    text-align: center;
}

.output-empty i {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-2);
    opacity: 0.5;
}

/* Terminal Styles */
.terminal-container {
    display: flex;
    flex-direction: column;
    height: 100%;
    background: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: var(--font-size-sm);
}

.terminal-output {
    flex: 1;
    padding: var(--spacing-4);
    overflow-y: auto;
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    max-height: calc(100% - 50px);
}

.terminal-welcome {
    margin-bottom: var(--spacing-4);
}

.welcome-line {
    color: var(--text-muted);
    margin-bottom: var(--spacing-1);
    font-style: italic;
}

.terminal-line {
    margin-bottom: var(--spacing-1);
    word-wrap: break-word;
    white-space: pre-wrap;
}

.terminal-command {
    color: var(--text-primary);
    font-weight: 500;
}

.terminal-output-text {
    color: var(--text-secondary);
    margin: var(--spacing-1) 0;
    padding-left: var(--spacing-4);
    white-space: pre-wrap;
    word-break: break-word;
}

.terminal-error {
    color: var(--error-color);
    margin: var(--spacing-1) 0;
    padding-left: var(--spacing-4);
    white-space: pre-wrap;
    word-break: break-word;
}

.terminal-success {
    color: var(--success-color);
    margin: var(--spacing-1) 0;
    padding-left: var(--spacing-4);
    white-space: pre-wrap;
    word-break: break-word;
}

.terminal-input-line {
    display: flex;
    align-items: center;
    padding: var(--spacing-3) var(--spacing-4);
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    min-height: 50px;
}

.terminal-prompt {
    color: var(--primary-color);
    font-weight: 600;
    margin-right: var(--spacing-2);
    white-space: nowrap;
    user-select: none;
    font-family: var(--font-mono);
}

.terminal-prompt span {
    font-family: var(--font-mono);
}

.terminal-command {
    color: var(--text-primary);
    font-weight: 500;
    font-family: var(--font-mono);
    margin: var(--spacing-1) 0;
}

.terminal-user-input {
    color: #ffff00;
    font-weight: 500;
    font-family: var(--font-mono);
    margin: var(--spacing-1) 0;
}

.terminal-system {
    color: #ff8800;
    font-weight: 500;
    font-family: var(--font-mono);
    margin: var(--spacing-1) 0;
}

.terminal-prompt-text {
    color: #00dddd;
    font-weight: 500;
    font-family: var(--font-mono);
    margin: var(--spacing-1) 0;
}

.terminal-loading {
    color: var(--text-muted);
    font-style: italic;
    margin: var(--spacing-1) 0;
    animation: pulse 1.5s infinite;
}

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

.terminal-input {
    flex: 1;
    background: transparent;
    border: none;
    outline: none;
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: var(--font-size-sm);
    line-height: 1.5;
    padding: var(--spacing-1) 0;
}

.terminal-input::placeholder {
    color: var(--text-muted);
    opacity: 0.7;
}

/* Examples Tab */
.examples-container {
    padding: var(--spacing-6);
    overflow-y: auto;
}

.examples-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-6);
    max-width: 1200px;
    margin: 0 auto;
}

.example-card {
    position: relative;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-6);
    cursor: pointer;
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
}

.example-card:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-lg);
    transform: translateY(-3px);
}

.example-card code {
    display: block;
    background: var(--bg-secondary);
    color: var(--primary-color);
    padding: var(--spacing-3);
    border-radius: var(--radius-md);
    font-family: var(--font-mono);
    font-size: var(--font-size-sm);
}

/* New Dynamic Examples Styles */
.examples-header {
    text-align: center;
    margin-bottom: var(--spacing-8);
    padding-bottom: var(--spacing-6);
    border-bottom: 1px solid var(--border-color);
}

.examples-header h2 {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-2);
}

.examples-header h2 i {
    color: var(--primary-color);
    margin-right: var(--spacing-2);
}

.examples-header p {
    color: var(--text-secondary);
    font-size: var(--font-size-lg);
}

.examples-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-12);
    color: var(--text-secondary);
}

.examples-loading .loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-color);
    border-top: 3px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: var(--spacing-4);
}

.examples-category-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin: var(--spacing-8) 0 var(--spacing-4) 0;
    padding-bottom: var(--spacing-3);
    border-bottom: 2px solid var(--primary-color);
    grid-column: 1 / -1;
}

.examples-category-header h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.examples-category-header h3 i {
    color: var(--primary-color);
}

.category-count {
    background: var(--primary-color);
    color: white;
    padding: var(--spacing-1) var(--spacing-3);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 500;
}

.example-card {
    position: relative;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-6);
    cursor: pointer;
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
}

.example-card:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-lg);
    transform: translateY(-3px);
}

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

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

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

.example-header h4 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.example-description {
    color: var(--text-secondary);
    line-height: 1.5;
    font-size: var(--font-size-sm);
    margin: 0;
}

.example-preview {
    background: var(--bg-tertiary);
    color: var(--primary-color);
    padding: var(--spacing-3);
    border-radius: var(--radius-md);
    font-family: var(--font-mono);
    font-size: var(--font-size-xs);
    border: 1px solid var(--border-color);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.example-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: auto;
    padding-top: var(--spacing-3);
    border-top: 1px solid var(--border-color);
}

.difficulty {
    padding: var(--spacing-1) var(--spacing-2);
    border-radius: var(--radius-md);
    font-size: var(--font-size-xs);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.difficulty.beginner {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success-color);
}

.difficulty.intermediate {
    background: rgba(245, 158, 11, 0.1);
    color: var(--warning-color);
}

.difficulty.advanced {
    background: rgba(239, 68, 68, 0.1);
    color: var(--error-color);
}

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

.examples-loaded .examples-loading {
    display: none;
}

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

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

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

.example-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    margin-bottom: var(--spacing-3);
}

.example-header i {
    width: 40px;
    height: 40px;
    background: var(--primary-color);
    color: white;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

.example-header h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
}

.example-header h4 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.example-description {
    color: var(--text-secondary);
    line-height: 1.5;
    font-size: var(--font-size-sm);
    margin: 0;
}

.example-preview {
    background: var(--bg-tertiary);
    color: var(--primary-color);
    padding: var(--spacing-3);
    border-radius: var(--radius-md);
    font-family: var(--font-mono);
    font-size: var(--font-size-xs);
    border: 1px solid var(--border-color);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.example-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: auto;
    padding-top: var(--spacing-3);
    border-top: 1px solid var(--border-color);
}

.difficulty {
    padding: var(--spacing-1) var(--spacing-2);
    border-radius: var(--radius-md);
    font-size: var(--font-size-xs);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.difficulty.beginner {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success-color);
}

.difficulty.intermediate {
    background: rgba(245, 158, 11, 0.1);
    color: var(--warning-color);
}

.difficulty.advanced {
    background: rgba(239, 68, 68, 0.1);
    color: var(--error-color);
}

.examples-header {
    text-align: center;
    margin-bottom: var(--spacing-8);
    padding-bottom: var(--spacing-6);
    border-bottom: 1px solid var(--border-color);
}

.examples-header h2 {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-2);
}

.examples-header h2 i {
    color: var(--primary-color);
    margin-right: var(--spacing-2);
}

.examples-header p {
    color: var(--text-secondary);
    font-size: var(--font-size-lg);
}

.examples-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-12);
    color: var(--text-secondary);
}

.examples-loading .loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-color);
    border-top: 3px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: var(--spacing-4);
}

.examples-category-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin: var(--spacing-8) 0 var(--spacing-4) 0;
    padding-bottom: var(--spacing-3);
    border-bottom: 2px solid var(--primary-color);
    grid-column: 1 / -1; /* Span all columns */
}

.examples-category-header h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.examples-category-header h3 i {
    color: var(--primary-color);
}

.category-count {
    background: var(--primary-color);
    color: white;
    padding: var(--spacing-1) var(--spacing-3);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 500;
}

/* Documentation Tab */
.docs-container {
    display: flex;
    height: 100%;
    overflow: hidden;
}

.docs-sidebar {
    width: 250px;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    padding: var(--spacing-6);
    overflow-y: auto;
}

.docs-sidebar h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-4);
}

.docs-nav {
    list-style: none;
}

.docs-nav li {
    margin-bottom: var(--spacing-2);
}

.docs-nav a {
    display: block;
    padding: var(--spacing-2) var(--spacing-3);
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.docs-nav a:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.docs-content {
    flex: 1;
    padding: var(--spacing-6);
    overflow-y: auto;
}

.docs-content h2 {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-4);
}

.syntax-table {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.syntax-table table {
    width: 100%;
    border-collapse: collapse;
}

.syntax-table th,
.syntax-table td {
    padding: var(--spacing-3) var(--spacing-4);
    text-align: left
    border-bottom: 1px solid var(--border-color);
}

.syntax-table th {
    background: var(--bg-secondary);
    font-weight: 600;
    color: var(--text-primary);
}

.syntax-table td {
    color: var(--text-secondary);
}

.syntax-table code {
    background: var(--bg-secondary);
    color: var(--primary-color);
    padding: var(--spacing-1) var(--spacing-2);
    border-radius: var(--radius-sm);
    font-family: var(--font-mono);
    font-size: var(--font-size-sm);
}

/* Toast Notifications */
.toast-container {
    position: fixed;
    top: var(--spacing-6);
    right: var(--spacing-6);
    z-index: 1000;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
}

.toast {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-left: 4px solid var(--primary-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-4);
    box-shadow: var(--shadow-lg);
    max-width: 400px;
    animation: slideIn 0.3s ease-out;
}

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

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

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

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal.show {
    display: flex;
}

.modal-content {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    max-width: 500px;
    width: 90%;
    max-height: 80vh;
    overflow: hidden;
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-6);
    border-bottom: 1px solid var(--border-color);
}

.modal-header h2 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-primary);
}

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

.modal-close:hover {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

.modal-body {
    padding: var(--spacing-6);
}

.setting-group {
    margin-bottom: var(--spacing-4);
}

.setting-group label {
    display: block;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: var(--spacing-2);
}

.setting-group select,
.setting-group input[type="range"] {
    width: 100%;
    padding: var(--spacing-2);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-primary);
    color: var(--text-primary);
}

/* Responsive Design */
@media (max-width: 768px) {
    .header-content {
        padding: var(--spacing-3) var(--spacing-4);
    }
    
    .logo-text h1 {
        font-size: var(--font-size-lg);
    }
    
    .control-panel {
        flex-direction: column;
        align-items: stretch;
        gap: var(--spacing-4);
    }
    
    .control-group {
        justify-content: space-between;
    }
    
    .editor-container {
        flex-direction: column;
    }
    
    .editor-divider {
        width: 100%;
        height: 1px;
        flex-direction: row;
    }
    
    .divider-line {
        left: 0;
        right: 0;
        top: 0;
        bottom: auto;
        width: 100%;
        height: 1px;
    }
    
    .examples-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-4);
    }
    
    .docs-container {
        flex-direction: column;
    }
    
    .docs-sidebar {
        width: 100%;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
    }
    
    .toast-container {
        top: var(--spacing-4);
        right: var(--spacing-4);
        left: var(--spacing-4);
    }
    
    .toast {
        max-width: none;
    }
}

/* Loading States */
.loading {
    opacity: 0.6;
    pointer-events: none;
}

.spinner {
    width: 20px;
    height: 20px;
    border: 2px solid var(--bg-tertiary);
    border-top: 2px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

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

/* Additional enhancements for modern UI */

/* Loading states and animations */
.btn.loading {
    position: relative;
    pointer-events: none;
    opacity: 0.7;
}

.btn.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 16px;
    height: 16px;
    border: 2px solid transparent;
    border-top: 2px solid currentColor;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

.btn.loading .fas {
    opacity: 0;
}

/* Enhanced tooltips */
[title] {
    position: relative;
}

[title]:hover::before {
    content: attr(title);
    position: absolute;
    bottom: 125%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--text-primary);
    color: var(--bg-primary);
    padding: var(--spacing-2) var(--spacing-3);
    border-radius: var(--radius-md);
    font-size: var(--font-size-xs);
    white-space: nowrap;
    z-index: 1000;
    opacity: 0;
    animation: fadeIn 0.3s ease-in-out forwards;
}

/* Code execution output styles */
.execution-success {
    border-left: 4px solid var(--success-color);
    background: rgba(16, 185, 129, 0.1);
    border-radius: var(--radius-md);
    padding: var(--spacing-4);
}

.execution-error {
    border-left: 4px solid var(--error-color);
    background: rgba(239, 68, 68, 0.1);
    border-radius: var(--radius-md);
    padding: var(--spacing-4);
}

.output-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    margin-bottom: var(--spacing-3);
    font-weight: 600;
    font-size: var(--font-size-sm);
}

.execution-success .output-header {
    color: var(--success-color);
}

.execution-error .output-header {
    color: var(--error-color);
}

.output-text, .error-text {
    background: var(--bg-secondary);
    color: var(--text-primary);
    padding: var(--spacing-3);
    border-radius: var(--radius-sm);
    font-family: var(--font-mono);
    font-size: var(--font-size-sm);
    line-height: 1.5;
    margin: 0;
    overflow-x: auto;
    white-space: pre-wrap;
    word-break: break-word;
}

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

/* Enhanced button hover effects */
.btn {
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.btn:hover::before {
    left: 100%;
}

/* Focus styles for accessibility */
.btn:focus,
.tab-btn:focus,
.editor-btn:focus,
.mode-btn:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Selection styles */
::selection {
    background: var(--primary-color);
    color: white;
}

::-moz-selection {
    background: var(--primary-color);
    color: white;
}
/* ...existing code... */

/* PTY Terminal Styles */
.terminal-line.system {
    color: #6c757d;
    font-style: italic;
    font-size: 0.9em;
    opacity: 0.8;
    margin: 2px 0;
}

.terminal-line.prompt {
    color: #007bff;
    font-weight: 600;
    background: rgba(0, 123, 255, 0.05);
    padding: 4px 8px;
    border-left: 3px solid #007bff;
    margin: 4px 0;
}

.terminal-line.user-input {
    color: #28a745;
    background: rgba(40, 167, 69, 0.1);
    padding: 2px 8px;
    border-left: 2px solid #28a745;
    font-style: italic;
}

.terminal-input.pty-input-mode {
    border: 2px solid #007bff !important;
    background: rgba(0, 123, 255, 0.02) !important;
    box-shadow: 0 0 8px rgba(0, 123, 255, 0.3) !important;
}

.terminal-input.pty-input-mode::placeholder {
    color: #007bff;
    font-weight: 500;
}

/* Input required indicator */
.input-required-indicator {
    display: inline-block;
    background: linear-gradient(45deg, #007bff, #0056b3);
    color: white;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 0.8em;
    font-weight: 600;
    margin-right: 8px;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { opacity: 1; }
    50% { opacity: 0.7; }
    100% { opacity: 1; }
}