/* CSS Variables for consistent theming */
:root {
    /* Colors */
    --color-primary: #239DAE;
    --color-primary-hover: #1e8a9a;
    --color-secondary: #6B7280;
    --color-success: #10B981;
    --color-warning: #F59E0B;
    --color-error: #EF4444;
    
    /* Background colors */
    --bg-primary: #FFFFFF;
    --bg-secondary: #F9FAFB;
    --bg-tertiary: #F3F4F6;
    --bg-sidebar: #FAFBFC;
    --bg-hover: #F3F4F6;
    --bg-active: #E5E7EB;
    
    /* Text colors */
    --text-primary: #111827;
    --text-secondary: #6B7280;
    --text-tertiary: #9CA3AF;
    --text-inverse: #FFFFFF;
    
    /* Border colors */
    --border-primary: #E5E7EB;
    --border-secondary: #D1D5DB;
    --border-focus: #239DAE;
    
    /* 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);
    
    /* Typography */
    --font-family-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-family-mono: 'JetBrains Mono', 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    
    /* Border radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
}

/* Dark theme variables */
[data-theme="dark"] {
    --bg-primary: #1F2937;
    --bg-secondary: #111827;
    --bg-tertiary: #0F172A;
    --bg-sidebar: #1E293B;
    --bg-hover: #374151;
    --bg-active: #4B5563;
    
    --text-primary: #F9FAFB;
    --text-secondary: #D1D5DB;
    --text-tertiary: #9CA3AF;
    
    --border-primary: #374151;
    --border-secondary: #4B5563;
}

/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    line-height: 1.5;
}

body {
    font-family: var(--font-family-sans);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    height: 100vh;
    overflow: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

/* Header */
.header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--spacing-lg);
    height: 60px;
    background-color: var(--bg-primary);
    border-bottom: 1px solid var(--border-primary);
    backdrop-filter: blur(8px);
    position: relative;
    z-index: 100;
}

.header-left,
.header-center,
.header-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.header-left {
    flex: 1;
}

.header-center {
    flex: 0 0 auto;
}

.header-right {
    flex: 1;
    justify-content: flex-end;
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.logo-icon {
    width: 28px;
    height: 28px;
    color: var(--color-primary);
}

.logo-text {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
}

.version-badge {
    background-color: var(--bg-tertiary);
    color: var(--text-secondary);
    padding: 0.125rem 0.5rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 500;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 0.5rem 1rem;
    border: none;
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
    white-space: nowrap;
    user-select: none;
}

.btn:focus {
    outline: 2px solid var(--border-focus);
    outline-offset: 2px;
}

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

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

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

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

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

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

.btn-small {
    padding: 0.375rem 0.75rem;
    font-size: 0.8125rem;
}

.btn-icon {
    width: 16px;
    height: 16px;
    stroke-width: 2;
}

/* Run controls */
.run-controls {
    display: flex;
    gap: var(--spacing-sm);
}

/* Dropdown */
.dropdown {
    position: relative;
}

.dropdown-trigger {
    position: relative;
}

.dropdown-arrow {
    width: 14px;
    height: 14px;
    opacity: 0.7;
    transition: transform var(--transition-fast);
}

.dropdown.open .dropdown-arrow {
    transform: rotate(180deg);
}

.dropdown-menu {
    position: absolute;
    top: calc(100% + 4px);
    right: 0;
    min-width: 200px;
    background-color: var(--bg-primary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-4px);
    transition: all var(--transition-fast);
    z-index: 1000;
}

.dropdown.open .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-item {
    padding: 0.75rem 1rem;
    cursor: pointer;
    color: var(--text-primary);
    border-bottom: 1px solid var(--border-primary);
    transition: background-color var(--transition-fast);
}

.dropdown-item:last-child {
    border-bottom: none;
}

.dropdown-item:hover {
    background-color: var(--bg-hover);
}

.dropdown-item:first-child {
    border-radius: var(--radius-md) var(--radius-md) 0 0;
}

.dropdown-item:last-child {
    border-radius: 0 0 var(--radius-md) var(--radius-md);
}

/* Main content area */
.main {
    display: flex;
    flex: 1;
    overflow: hidden;
}

/* Sidebar */
.sidebar {
    width: 280px;
    background-color: var(--bg-sidebar);
    border-right: 1px solid var(--border-primary);
    display: flex;
    flex-direction: column;
    transition: width var(--transition-normal);
    position: relative;
}

.sidebar.collapsed {
    width: 0;
    min-width: 0;
    border-right: none;
}

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

.sidebar-header h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.sidebar-content {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-md) 0;
}

.docs-section {
    margin-bottom: var(--spacing-lg);
}

.docs-section h4 {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.025em;
    padding: 0 var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
}

.docs-item {
    padding: 0.5rem var(--spacing-lg);
    cursor: pointer;
    color: var(--text-secondary);
    font-size: 0.875rem;
    transition: all var(--transition-fast);
    border-left: 3px solid transparent;
}

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

.docs-item.active {
    background-color: var(--bg-hover);
    color: var(--color-primary);
    border-left-color: var(--color-primary);
}

.sidebar-footer {
    padding: var(--spacing-lg);
    border-top: 1px solid var(--border-primary);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.github-link,
.discord-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
    transition: color var(--transition-fast);
}

.github-link:hover,
.discord-link:hover {
    color: var(--text-primary);
}

.github-link svg,
.discord-link svg {
    width: 16px;
    height: 16px;
}

/* Workspace */
.workspace {
    display: flex;
    flex: 1;
    overflow: hidden;
}

/* Panels */
.editor-panel,
.preview-panel {
    display: flex;
    flex-direction: column;
    min-width: 0;
    flex: 1;
}

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

.panel-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-primary);
}

.panel-icon {
    width: 16px;
    height: 16px;
    color: var(--text-secondary);
}

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

/* Zoom select styling */
.zoom-select {
    background-color: var(--bg-primary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-sm);
    padding: 0.375rem 0.5rem;
    font-size: 0.75rem;
    font-family: var(--font-family-sans);
    color: var(--text-primary);
    cursor: pointer;
    transition: all 0.2s ease;
    min-width: 80px;
    height: 32px; /* Match button height */
}

.zoom-select:hover {
    border-color: var(--border-secondary);
    background-color: var(--bg-hover);
}

.zoom-select:focus {
    outline: none;
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px rgba(35, 157, 174, 0.1);
}

/* Status indicator */
.status-indicator {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

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

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

.status-dot.error {
    background-color: var(--color-error);
    animation: none;
}

.status-text {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

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

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

.monaco-editor {
    border-radius: 0;
}

/* Splitter */
.splitter {
    width: 1px;
    background-color: var(--border-primary);
    cursor: col-resize;
    position: relative;
    z-index: 10;
}

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

/* Preview */
.preview-container {
    flex: 1;
    background-color: var(--bg-secondary);
    overflow: hidden; /* Hide overflow for zoom/pan */
}

.preview {
    width: 100%;
    height: 100%;
    padding: var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative; /* For zoom controls positioning */
    overflow: hidden; /* Hide overflow during pan */
    user-select: none; /* Prevent text selection during drag */
}

.preview-placeholder {
    text-align: center;
    color: var(--text-secondary);
    max-width: 400px;
}

/* Zoom Controls */
.zoom-controls {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    display: flex;
    gap: var(--spacing-xs);
    z-index: 1000;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.preview:hover .zoom-controls {
    opacity: 1;
}

.zoom-btn {
    padding: var(--spacing-sm);
    background: rgba(0, 0, 0, 0.7);
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 12px;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    color: white;
    backdrop-filter: blur(4px);
}

.zoom-btn:hover {
    background: rgba(0, 0, 0, 0.9);
    transform: scale(1.1);
}

.zoom-btn:active {
    transform: scale(0.9);
}

/* Pan cursor states */
.preview.pan-enabled {
    cursor: grab;
}

.preview.pan-active {
    cursor: grabbing;
}

/* Remove shadows and effects during drag */
.preview.pan-active svg {
    filter: none !important;
    box-shadow: none !important;
    transition: none !important;
}

.preview.pan-active {
    box-shadow: none !important;
}

/* Remove blur and effects during zoom */
.preview svg {
    transition: none !important;
    filter: none !important;
    image-rendering: auto;
}

.preview {
    image-rendering: auto;
}

/* Zoom levels - simplified since JS handles transforms */
.preview.zoom-fit {
    display: flex;
    align-items: center;
    justify-content: center;
}

.preview.zoom-fit svg {
    max-width: 100% !important;
    max-height: 100% !important;
    width: auto !important;
    height: auto !important;
}

/* Enable pan cursor for all zoom levels except fit */
.preview:not(.zoom-fit) {
    cursor: grab;
}

.preview:not(.zoom-fit).pan-active {
    cursor: grabbing;
}

.placeholder-content h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.placeholder-content p {
    margin-bottom: var(--spacing-lg);
    line-height: 1.6;
}

.placeholder-icon {
    width: 64px;
    height: 64px;
    color: var(--text-tertiary);
    margin: 0 auto var(--spacing-lg);
}

.quick-start {
    margin-top: var(--spacing-lg);
}

/* Output panel */
.output-panel {
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border-primary);
    display: flex;
    flex-direction: column;
    height: 200px;
    transition: height var(--transition-normal);
    overflow: hidden;
}

.output-panel.hidden {
    height: 0;
    border-top: none;
}

.output-content {
    flex: 1;
    font-family: var(--font-family-mono);
    font-size: 0.8125rem;
    line-height: 1.5;
    padding: var(--spacing-md);
    overflow-y: auto;
    white-space: pre-wrap;
    color: var(--text-secondary);
}

/* Message types */
.message {
    margin-bottom: var(--spacing-sm);
    padding: var(--spacing-sm);
    border-radius: var(--radius-sm);
    border-left: 3px solid;
}

.message-success {
    background-color: rgba(16, 185, 129, 0.1);
    border-left-color: var(--color-success);
    color: var(--color-success);
}

.message-error {
    background-color: rgba(239, 68, 68, 0.1);
    border-left-color: var(--color-error);
    color: var(--color-error);
}

.message-warning {
    background-color: rgba(245, 158, 11, 0.1);
    border-left-color: var(--color-warning);
    color: var(--color-warning);
}

.message-info {
    background-color: rgba(35, 157, 174, 0.1);
    border-left-color: var(--color-primary);
    color: var(--color-primary);
}

/* SVG preview styling */
.preview svg {
    max-width: 100%;
    max-height: 100%;
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-md);
    background-color: var(--bg-primary);
    /* Remove box-shadow for cleaner zoom/pan */
}

/* Loading states */
.loading {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.loading-spinner {
    width: 16px;
    height: 16px;
    border: 2px solid var(--border-primary);
    border-top: 2px solid var(--color-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Responsive design */
@media (max-width: 1024px) {
    .sidebar {
        position: absolute;
        left: 0;
        top: 0;
        bottom: 0;
        z-index: 200;
        transform: translateX(-100%);
        transition: transform var(--transition-normal);
    }
    
    .sidebar.open {
        transform: translateX(0);
    }
    
    .workspace {
        flex-direction: column;
    }
    
    .editor-panel,
    .preview-panel {
        height: 50vh;
    }
    
    .splitter {
        width: 100%;
        height: 1px;
        cursor: row-resize;
    }
}

@media (max-width: 768px) {
    .header {
        padding: 0 var(--spacing-md);
    }
    
    .header-center {
        order: 3;
        flex: 1;
        justify-content: center;
    }
    
    .header-right {
        order: 2;
        flex: 0 0 auto;
    }
    
    .logo-text {
        display: none;
    }
    
    .run-controls {
        flex-direction: column;
        gap: var(--spacing-xs);
    }
    
    .btn {
        padding: 0.375rem 0.75rem;
        font-size: 0.8125rem;
    }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus styles */
button:focus-visible,
.docs-item:focus-visible {
    outline: 2px solid var(--border-focus);
    outline-offset: 2px;
}

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

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

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

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

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --border-primary: #000000;
        --border-secondary: #000000;
        --text-secondary: #000000;
    }
}

/* Documentation Modal */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

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

.modal-container {
    background: var(--bg-primary);
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    width: 90vw;
    max-width: 1200px;
    height: 80vh;
    max-height: 800px;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transform: translateY(20px);
    transition: transform 0.3s ease;
}

.modal-overlay.active .modal-container {
    transform: translateY(0);
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-primary);
    background: var(--bg-secondary);
}

.modal-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.modal-close {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border: none;
    background: transparent;
    border-radius: 6px;
    cursor: pointer;
    color: var(--text-secondary);
    transition: all 0.2s ease;
}

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

.modal-close svg {
    width: 18px;
    height: 18px;
}

.modal-content {
    display: flex;
    flex: 1;
    overflow: hidden;
}

.docs-sidebar {
    width: 240px;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-primary);
    overflow-y: auto;
}

.docs-nav {
    padding: 16px 0;
}

.docs-nav-item {
    display: flex;
    align-items: center;
    padding: 12px 20px;
    cursor: pointer;
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    transition: all 0.2s ease;
    border-left: 3px solid transparent;
}

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

.docs-nav-item.active {
    background: var(--bg-tertiary);
    color: var(--accent-primary);
    border-left-color: var(--accent-primary);
}

.docs-nav-icon {
    width: 18px;
    height: 18px;
    margin-right: 12px;
    flex-shrink: 0;
}

.docs-content {
    flex: 1;
    overflow-y: auto;
    padding: 32px;
}

.docs-tab {
    display: none;
}

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

.docs-tab h3 {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0 0 16px 0;
}

.docs-tab h4 {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
    margin: 32px 0 12px 0;
}

.docs-tab p {
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-secondary);
    margin: 0 0 16px 0;
}

.docs-tab ul {
    margin: 0 0 16px 0;
    padding-left: 20px;
}

.docs-tab li {
    font-size: 15px;
    line-height: 1.6;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.docs-tab pre {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-primary);
    border-radius: 8px;
    padding: 16px;
    margin: 16px 0 24px 0;
    overflow-x: auto;
    font-family: 'JetBrains Mono', Monaco, Menlo, monospace;
    font-size: 14px;
    line-height: 1.5;
    position: relative;
}

.copy-btn {
    position: absolute;
    top: 8px;
    right: 8px;
    background: var(--bg-primary);
    border: 1px solid var(--border-secondary);
    border-radius: 4px;
    padding: 6px;
    cursor: pointer;
    color: var(--text-secondary);
    transition: all 0.2s ease;
    opacity: 0;
}

.load-btn {
    position: absolute;
    top: 8px;
    right: 42px;
    background: var(--accent-primary);
    border: 1px solid var(--accent-primary);
    border-radius: 4px;
    padding: 6px;
    cursor: pointer;
    color: white;
    transition: all 0.2s ease;
    opacity: 0;
}

.docs-tab pre:hover .copy-btn,
.docs-tab pre:hover .load-btn {
    opacity: 1;
}

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

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

.docs-tab code {
    background: var(--bg-tertiary);
    color: var(--accent-primary);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: 'JetBrains Mono', Monaco, Menlo, monospace;
    font-size: 13px;
}

.docs-tab pre code {
    background: none;
    color: var(--text-primary);
    padding: 0;
}

/* Responsive modal */
@media (max-width: 768px) {
    .modal-container {
        width: 95vw;
        height: 90vh;
        margin: 20px;
    }
    
    .modal-content {
        flex-direction: column;
    }
    
    .docs-sidebar {
        width: 100%;
        height: auto;
        max-height: 200px;
        border-right: none;
        border-bottom: 1px solid var(--border-primary);
    }
    
    .docs-nav {
        display: flex;
        overflow-x: auto;
        padding: 8px;
        gap: 8px;
    }
    
    .docs-nav-item {
        white-space: nowrap;
        padding: 8px 12px;
        border-radius: 6px;
        border-left: none;
        font-size: 13px;
    }
    
    .docs-content {
        padding: 20px;
    }
}

/* Print styles */
@media print {
    .header,
    .sidebar,
    .output-panel {
        display: none;
    }
    
    .main {
        flex-direction: row;
    }
    
    .workspace {
        width: 100%;
    }
}