/**
 * Multi-Language Code Editor IDE Styles
 * 
 * A full-featured IDE interface with:
 * - Python: File explorer, Monaco Editor, Pyodide execution
 * - Web: HTML/CSS/JS editors with live preview
 * - Terminal: Command reference (read-only)
 * - Material Design theme integration
 * 
 * Design: Custom educational IDE (not VS Code clone)
 */

/* Loading State */
.editor-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    gap: 1.5rem;
    background: var(--md-default-bg-color);
}

.loading-spinner {
    width: 60px;
    height: 60px;
    border: 4px solid var(--md-default-fg-color--lightest);
    border-top: 4px solid var(--md-primary-fg-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

.editor-loading p {
    color: var(--md-default-fg-color--light);
    font-size: 1.1rem;
    font-weight: 500;
}

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

/* Main IDE Container */
#code-editor-app {
    display: flex;
    flex-direction: column;
    background: var(--md-default-bg-color);
    overflow: hidden;
    height: 100%;
    min-height: 0;
}

/* Toolbar */
.ide-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.375rem 0.75rem;
    background: linear-gradient(135deg, var(--md-primary-fg-color), var(--md-accent-fg-color));
    color: white;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
    min-height: 42px;
}

.ide-toolbar-left {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

/* Mode Switcher */
.ide-mode-switcher {
    display: flex;
    gap: 0.25rem;
    background: rgba(0, 0, 0, 0.2);
    padding: 0.25rem;
    border-radius: 0.375rem;
}

.mode-btn {
    padding: 0.375rem 0.75rem;
    background: transparent;
    color: rgba(255, 255, 255, 0.7);
    border: none;
    border-radius: 0.25rem;
    font-size: 0.8rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
}

.mode-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    color: white;
}

.mode-btn.active {
    background: white;
    color: var(--md-primary-fg-color);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.ide-title {
    font-size: 1rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.ide-title::before {
    content: '{ }';
    font-size: 1.2rem;
    font-weight: 700;
}

.ide-toolbar-actions {
    display: flex;
    gap: 0.375rem;
}

/* Mobile Files Toggle - Hidden by default, shown only on mobile */
/* Unified Mobile Sidebar Toggle Button */
.mobile-sidebar-btn {
    display: none;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    padding: 0;
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border: none;
    border-radius: 0.25rem;
    cursor: pointer;
    transition: all 0.2s ease;
    backdrop-filter: blur(10px);
}

.mobile-sidebar-btn:hover {
    background: rgba(255, 255, 255, 0.3);
}

.mobile-sidebar-btn:active {
    transform: scale(0.95);
}

.mobile-sidebar-btn svg {
    width: 20px;
    height: 20px;
    stroke: currentColor;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
    fill: none;
}

.ide-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.375rem 0.75rem;
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border: none;
    border-radius: 0.25rem;
    font-size: 0.8rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    backdrop-filter: blur(10px);
    white-space: nowrap;
}

.ide-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-1px);
}

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

.ide-btn.primary {
    background: rgba(255, 255, 255, 0.95);
    color: var(--md-primary-fg-color);
}

.ide-btn.primary:hover {
    background: white;
}

.ide-btn-stop {
    background: rgba(239, 83, 80, 0.9);
    color: white;
}

.ide-btn-stop:hover {
    background: rgba(239, 83, 80, 1);
}

/* SVG Icons for buttons */
.ide-btn svg {
    width: 14px;
    height: 14px;
    stroke: currentColor;
    fill: none;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

/* Main Workspace */
.ide-workspace {
    display: grid;
    grid-template-columns: auto 1fr;
    flex: 1;
    min-height: 0;
    overflow: hidden;
}

/* Python layout: sidebar column | editor column (editor-area uses flexbox internally) */
.ide-workspace.python-mode {
    grid-template-columns: auto 1fr;
}

.ide-workspace.python-mode .ide-sidebar {
    /* Sidebar is full height, independent column */
    height: 100%;
}

.ide-workspace.python-mode .ide-editor-area {
    /* Editor area uses flexbox to stack editor and console */
    display: flex;
    flex-direction: column;
    min-height: 0;
    height: 100%;
}

/* Web mode: sidebar column | editor column (same grid layout as Python) */
.ide-workspace.web-mode {
    grid-template-columns: auto 1fr;
}

.ide-workspace.web-mode .ide-sidebar {
    height: 100%;
}

.ide-workspace.web-mode .ide-editor-area {
    display: flex;
    flex-direction: column;
    min-height: 0;
    height: 100%;
}

/* Unified IDE Sidebar - Works for both Python and Web modes */
.ide-sidebar {
    width: 250px;
    min-width: 150px;
    max-width: 400px;
    background: var(--md-code-bg-color);
    border-right: 1px solid var(--md-default-fg-color--lightest);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transition: width 0.3s ease, transform 0.3s ease;
    position: relative;
}

/* Sidebar Header - Unified design */
.sidebar-header {
    padding: 0.5rem 0.75rem;
    background: var(--md-default-fg-color--lightest);
    border-bottom: 1px solid var(--md-default-fg-color--lighter);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    min-height: 40px;
}

.sidebar-icon {
    display: flex;
    align-items: center;
    flex-shrink: 0;
}

.sidebar-icon svg {
    width: 18px;
    height: 18px;
    stroke: var(--md-default-fg-color);
    fill: none;
}

.sidebar-title {
    flex: 1;
    font-weight: 600;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--md-default-fg-color);
    white-space: nowrap;
    overflow: hidden;
}

.sidebar-toggle-btn {
    background: none;
    border: none;
    color: var(--md-default-fg-color--light);
    cursor: pointer;
    padding: 0.25rem;
    display: flex;
    align-items: center;
    transition: all 0.2s ease;
    flex-shrink: 0;
}

.sidebar-toggle-btn:hover {
    color: var(--md-primary-fg-color);
    background: var(--md-default-fg-color--lightest);
    border-radius: 0.25rem;
}

.sidebar-toggle-btn svg {
    width: 16px;
    height: 16px;
    stroke: currentColor;
    fill: none;
}

/* Sidebar Content Area */
.sidebar-content {
    flex: 1;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
}

/* Collapsed State */
.ide-sidebar.collapsed {
    width: 40px !important;
    min-width: 40px !important;
}

.ide-sidebar.collapsed .sidebar-resize-handle {
    display: none;
}

.ide-sidebar.collapsed .sidebar-header {
    justify-content: center;
    padding: 0.5rem 0.25rem;
    flex-direction: column;
    gap: 0.5rem;
}

.ide-sidebar.collapsed .sidebar-title {
    display: none;
}

.ide-sidebar.collapsed .sidebar-icon {
    margin: 0;
}

.ide-sidebar.collapsed .sidebar-icon svg {
    width: 20px;
    height: 20px;
}

.ide-sidebar.collapsed .sidebar-toggle-btn {
    padding: 0.125rem;
}

.ide-sidebar.collapsed .sidebar-toggle-btn svg {
    width: 14px;
    height: 14px;
}

.ide-sidebar.collapsed .sidebar-content {
    display: none;
}

/* Unified Sidebar Resize Handle */
.sidebar-resize-handle {
    position: absolute;
    right: -2px;
    top: 0;
    bottom: 0;
    width: 4px;
    background: transparent;
    cursor: col-resize;
    z-index: 3;
    transition: background 0.2s ease;
}

.sidebar-resize-handle:hover,
.sidebar-resize-handle.resizing {
    background: var(--md-accent-fg-color);
    opacity: 0.6;
}

/* Python Mode: File List */
.file-list {
    flex: 1;
    overflow-y: auto;
    padding: 0.5rem;
}

.file-item {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.3rem 0.5rem;
    cursor: pointer;
    border-radius: 0.25rem;
    transition: all 0.2s ease;
    position: relative;
    margin-bottom: 0.125rem;
    font-size: 0.8rem;
}

.file-item:hover {
    background: var(--md-default-fg-color--lightest);
}

.file-item.active {
    background: var(--md-primary-fg-color--transparent);
    font-weight: 500;
}

.file-item.template::after {
    content: '⚠';
    position: absolute;
    right: 2rem;
    opacity: 0.4;
    font-size: 0.8rem;
}

.file-icon {
    font-size: 0.9rem;
    flex-shrink: 0;
}

.file-icon::before {
    content: '📄';
}

.file-item.active .file-icon::before {
    content: '📝';
}

.file-name {
    color: var(--md-typeset-color);
    flex: 1;
    font-size: 0.8rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    min-width: 0;
}

.file-delete {
    background: none;
    border: none;
    color: var(--md-default-fg-color--light);
    cursor: pointer;
    padding: 0.25rem;
    opacity: 0;
    transition: all 0.2s ease;
}

.file-item:hover .file-delete {
    opacity: 1;
}

.file-delete:hover {
    color: var(--md-error-fg-color, #ef5350);
}

.file-delete::before {
    content: '✕';
    font-size: 1.1rem;
}

.new-file-form {
    padding: 0.5rem;
    background: var(--md-default-fg-color--lightest);
    border-top: 1px solid var(--md-default-fg-color--lighter);
    flex-shrink: 0;
}

.ide-sidebar.collapsed .new-file-form {
    display: none;
}

.new-file-input {
    width: 100%;
    padding: 0.5rem;
    border: 1px solid var(--md-default-fg-color--lighter);
    border-radius: 0.25rem;
    background: var(--md-default-bg-color);
    color: var(--md-default-fg-color);
    font-family: var(--md-code-font-family);
    font-size: 0.85rem;
    box-sizing: border-box;
}

.new-file-input:focus {
    outline: none;
    border-color: var(--md-primary-fg-color);
}

/* Context Menu */
.context-menu {
    position: fixed;
    background: var(--md-default-bg-color);
    border: 1px solid var(--md-default-fg-color--lighter);
    border-radius: 0.375rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    padding: 0.5rem 0;
    z-index: 300;
    min-width: 180px;
}

.context-menu-item {
    padding: 0.6rem 1rem;
    cursor: pointer;
    transition: background 0.2s ease;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.9rem;
}

.context-menu-item:hover {
    background: var(--md-default-fg-color--lightest);
}

.context-menu-item::before {
    width: 1.2rem;
    text-align: center;
}

.context-menu-item.rename::before { content: '✏'; }
.context-menu-item.duplicate::before { content: '📋'; }
.context-menu-item.delete::before { content: '🗑'; }

/* Editor Area */
.ide-editor-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    background: var(--md-code-bg-color);
}

/* File Tabs */
.editor-tabs {
    display: flex;
    background: var(--md-default-fg-color--lightest);
    border-bottom: 1px solid var(--md-default-fg-color--lighter);
    overflow-x: auto;
    overflow-y: hidden;
}

.editor-tabs::-webkit-scrollbar {
    height: 4px;
}

.editor-tabs::-webkit-scrollbar-thumb {
    background: var(--md-default-fg-color--lighter);
    border-radius: 2px;
}

.editor-tab {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    border-right: 1px solid var(--md-default-fg-color--lighter);
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
    position: relative;
}

.editor-tab:hover {
    background: var(--md-default-fg-color--lightest);
}

.editor-tab.active {
    background: var(--md-code-bg-color);
    border-bottom: 2px solid var(--md-primary-fg-color);
}

.editor-tab-name {
    font-size: 0.8125rem;
    font-family: var(--md-code-font-family);
}

.editor-tab.modified .editor-tab-name::after {
    content: '●';
    margin-left: 0.5rem;
    color: var(--md-accent-fg-color);
}

.editor-tab-close {
    background: none;
    border: none;
    color: var(--md-default-fg-color--light);
    cursor: pointer;
    padding: 0.2rem;
    transition: all 0.2s ease;
    opacity: 0;
}

.editor-tab:hover .editor-tab-close {
    opacity: 1;
}

.editor-tab-close:hover {
    color: var(--md-error-fg-color, #ef5350);
}

.editor-tab-close::before {
    content: '✕';
}

/* Monaco Editor Container */
.editor-container {
    flex: 1;
    overflow: hidden;
    position: relative;
    min-height: 200px; /* Prevent console from squeezing editor too much */
}

#monaco-editor {
    width: 100%;
    height: 100%;
}

/* Empty State */
.editor-empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    gap: 1.5rem;
    color: var(--md-default-fg-color--light);
}

.editor-empty-state-icon {
    opacity: 0.3;
}

.editor-empty-state-icon svg {
    width: 64px;
    height: 64px;
    stroke: currentColor;
    fill: none;
    stroke-width: 1.5;
}

.editor-empty-state-text {
    font-size: 1rem;
    font-weight: 500;
}

.editor-empty-state-hint {
    font-size: 0.85rem;
    opacity: 0.7;
}

/* Console Panel - Terminal Style */
.ide-console {
    border-top: 1px solid var(--md-default-fg-color--lighter);
    background: #1a1a1a;
    display: flex;
    flex-direction: column;
    height: 300px;
    min-height: 100px;
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', 'Consolas', 'source-code-pro', monospace;
    position: relative;
}

/* Resize handle for console */
.console-resize-handle {
    position: absolute;
    top: -2px;
    left: 0;
    right: 0;
    height: 4px;
    background: #404040;
    cursor: ns-resize;
    z-index: 3;
    transition: background 0.2s ease;
}

.console-resize-handle:hover,
.console-resize-handle.resizing {
    background: #4ade80;
}

.ide-console.collapsed {
    height: 50px;
    min-height: 50px;
}

.ide-console.collapsed .console-resize-handle {
    display: none;
}

.ide-console.collapsed .console-output,
.ide-console.collapsed .console-header.console-actions {
    display: none;
}

.console-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.5rem 1rem;
    background: #2d2d2d;
    border-bottom: 1px solid #404040;
    cursor: pointer;
    user-select: none;
}

.console-title {
    font-weight: 500;
    font-size: 0.8rem;
    color: #cccccc;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: inherit;
}

.console-title::before {
    content: '>_';
    font-size: 0.9rem;
    color: #4ade80;
    font-weight: bold;
}

.ide-console.collapsed .console-title::before {
    content: '▶';
    color: #cccccc;
}

.ide-console:not(.collapsed) .console-title::before {
    content: '▼';
    color: #cccccc;
}

.console-actions {
    display: flex;
    gap: 0.5rem;
}

.console-btn {
    background: none;
    border: none;
    color: #888888;
    cursor: pointer;
    padding: 0.25rem 0.5rem;
    font-size: 0.75rem;
    transition: color 0.2s ease;
    font-family: inherit;
}

.console-btn:hover {
    color: #ffffff;
}

.console-output {
    flex: 1;
    overflow-y: auto;
    padding: 0.75rem 1rem;
    background: #1a1a1a;
    font-family: inherit;
    font-size: 0.85rem;
    line-height: 1.4;
    color: #cccccc;
}

.console-output::-webkit-scrollbar {
    width: 8px;
}

.console-output::-webkit-scrollbar-thumb {
    background: #404040;
    border-radius: 4px;
}

.console-output::-webkit-scrollbar-thumb:hover {
    background: #555555;
}

.console-output::-webkit-scrollbar-track {
    background: #2d2d2d;
}

.console-line {
    margin: 0.2rem 0;
    padding: 0.1rem 0;
    white-space: pre-wrap;
    word-wrap: break-word;
    transition: background-color 0.2s ease;
}

.console-line:hover {
    background-color: rgba(255, 255, 255, 0.05);
}

.console-line.stdout {
    color: #cccccc;
}

.console-line.stderr {
    color: #ff6b6b;
}

.console-line.error {
    color: #ff4444;
    font-weight: 500;
}

.console-line.success {
    color: #4ade80;
}

.console-line.info {
    color: #ffd93d;
    font-style: normal;
    font-weight: 500;
}

.console-line.info::before {
    content: '? ';
    color: #ffd93d;
}

.console-line::before {
    content: '$ ';
    color: #4ade80;
    font-weight: bold;
    margin-right: 0.5rem;
}

/* Console Input Line */
.console-input-line {
    display: flex;
    align-items: center;
    padding: 0.25rem 0.75rem;
    margin: 0;
    background: transparent;
    border: none;
}

.console-input-prompt {
    color: #4ade80;
    font-weight: bold;
    margin-right: 0.5rem;
    flex-shrink: 0;
}

.console-input-field {
    flex: 1;
    background: transparent;
    border: none;
    color: #e5e7eb;
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    font-size: 0.9rem;
    padding: 0.25rem;
    outline: none;
    caret-color: #4ade80;
}

.console-input-field::placeholder {
    color: #6b7280;
    opacity: 0.7;
}

.console-input-field:focus {
    background: rgba(74, 222, 128, 0.05);
    border-radius: 0.25rem;
}

/* Pyodide Loading Progress - Terminal Style */
.pyodide-progress {
    margin: 0.5rem 0;
    padding: 0.75rem;
    background: #2d2d2d;
    border-radius: 0.375rem;
    border-left: 3px solid #4ade80;
    color: #cccccc;
    font-family: inherit;
}

.pyodide-progress-text {
    font-size: 0.85rem;
    color: #cccccc;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.pyodide-progress-bar {
    width: 100%;
    height: 6px;
    background: #404040;
    border-radius: 3px;
    overflow: hidden;
    position: relative;
}

.pyodide-progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #4ade80, #22c55e);
    border-radius: 3px;
    transition: width 0.3s ease;
    position: relative;
}

.pyodide-progress-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.3),
        transparent
    );
    animation: progress-shimmer 1.5s infinite;
}

@keyframes progress-shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

.pyodide-progress-percentage {
    font-size: 0.75rem;
    color: #888888;
    margin-top: 0.25rem;
    text-align: right;
}

/* Resize Handle - Terminal Style */
.resize-handle {
    height: 4px;
    background: #404040;
    cursor: ns-resize;
    transition: background 0.2s ease;
    flex-shrink: 0;
}

.resize-handle:hover,
.resize-handle.resizing {
    background: #4ade80;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .ide-toolbar {
        padding: 0.5rem 0.75rem;
    }
    
    .ide-title {
        font-size: 0.9rem;
    }
    
    .ide-title::before {
        display: none;
    }
    
    /* On tablets, collapsed sidebar is 40px, expanded sidebar uses natural width */
    .ide-sidebar.collapsed {
        width: 40px !important;
        min-width: 40px !important;
    }
    
    /* When expanded on tablet, allow sidebar to take its saved/natural width */
    .ide-sidebar:not(.collapsed) {
        width: auto;
        min-width: 150px;
        max-width: 400px;
    }
}

@media (max-width: 768px) {
    .ide-toolbar {
        flex-wrap: wrap;
        gap: 0.5rem;
    }
    
    .ide-toolbar-left {
        gap: 0.5rem;
        flex: 1;
    }
    
    .ide-mode-switcher {
        order: 3;
        width: 100%;
        justify-content: center;
    }
    
    .ide-title {
        display: none;
    }
    
    /* Show mobile sidebar toggle on mobile */
    .mobile-sidebar-btn {
        display: inline-flex;
    }
    
    /* Collapse sidebar completely on mobile */
    .ide-sidebar {
        display: none;
    }
    
    .ide-workspace,
    .ide-workspace.python-mode,
    .ide-workspace.web-mode {
        grid-template-columns: 1fr !important;
    }
    
    .ide-editor-area {
        width: 100%;
        max-width: 100%;
    }
    
    .sidebar-resize-handle {
        display: none !important;
    }
    
    .ide-btn span {
        display: none;
    }
    
    .ide-btn {
        padding: 0.5rem;
        min-width: 36px;
        justify-content: center;
    }
    
    .ide-console {
        height: 180px;
    }
    
    .web-layout {
        grid-template-columns: 1fr;
        grid-template-rows: 1fr 1fr;
    }
    
    .web-editors {
        border-right: none;
        border-bottom: 1px solid var(--md-default-fg-color--lightest);
    }
}

@media (max-width: 480px) {
    .mode-btn {
        padding: 0.375rem 0.5rem;
        font-size: 0.75rem;
    }
    
    .ide-sidebar {
        width: 180px;
    }
    
    .web-editor-tabs {
        padding: 0.375rem 0.5rem;
        gap: 0.25rem;
    }
    
    .web-tab {
        padding: 0.375rem 0.5rem;
        font-size: 0.75rem;
    }
}

/* Dark Mode Enhancements */
[data-md-color-scheme="slate"] .ide-toolbar {
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

[data-md-color-scheme="slate"] .context-menu {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
}

[data-md-color-scheme="slate"] .file-item:hover {
    background: rgba(255, 255, 255, 0.05);
}

/* Keyboard Shortcuts Hint */
.keyboard-hint {
    position: fixed;
    bottom: 1rem;
    right: 1rem;
    padding: 0.5rem 1rem;
    background: var(--md-default-fg-color);
    color: var(--md-default-bg-color);
    border-radius: 0.375rem;
    font-size: 0.8rem;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
    z-index: 300;
}

.keyboard-hint.show {
    opacity: 0.9;
}

/* Template Warning Banner */
.template-warning {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1.25rem;
    background: rgba(212, 155, 71, 0.3);
    color: var(--md-warning-fg-color, #ff9800);
    font-size: 0.8rem;
}

.template-warning::before {
    content: '⚠';
    font-size: 0.9rem;
}

/* ========================================
   WEB IDE LAYOUT
   ======================================== */

.web-layout {
    display: grid;
    grid-template-columns: minmax(300px, 1fr) minmax(300px, 1fr);
    grid-template-rows: 100%;
    height: 100%;
    min-height: 0;
    flex: 1;
    overflow: hidden;
}

.web-layout > * {
    /* Ensure all grid children are full height */
    height: 100%;
    min-height: 0;
}

/* Web Environment Sidebar */
.web-sidebar {
    display: flex;
    flex-direction: column;
    background: var(--md-code-bg-color);
    border-right: 1px solid var(--md-default-fg-color--lightest);
    overflow: hidden;
    transition: width 0.3s ease, transform 0.3s ease;
    width: 250px;
    min-width: 150px;
    position: relative;
    height: 100%; /* Explicit full height */
}

/* Resize handle for web sidebar */
.web-sidebar-resize-handle {
    position: absolute;
    right: -2px;
    top: 0;
    bottom: 0;
    width: 4px;
    background: transparent;
    cursor: col-resize;
    z-index: 3;
    transition: background 0.2s ease;
}

.web-sidebar-resize-handle:hover,
.web-sidebar-resize-handle.resizing {
    background: var(--md-accent-fg-color);
    opacity: 0.6;
}

.web-sidebar.collapsed {
    width: 40px;
    min-width: 40px;
}

.web-sidebar.collapsed .web-sidebar-resize-handle {
    display: none;
}

.web-sidebar.collapsed .web-sidebar-title,
.web-sidebar.collapsed .web-env-actions,
.web-sidebar.collapsed .environment-list {
    display: none;
}

.web-sidebar-header {
    padding: 0.5rem 0.75rem;
    background: var(--md-default-fg-color--lightest);
    border-bottom: 1px solid var(--md-default-fg-color--lightest);
    font-weight: 600;
    font-size: 0.8rem;
    color: var(--md-default-fg-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 36px;
}

.web-sidebar.collapsed .web-sidebar-header {
    padding: 0.5rem;
    justify-content: center;
}

.web-sidebar-title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.web-env-actions {
    padding: 0.75rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    border-bottom: 1px solid var(--md-default-fg-color--lightest);
}

.env-name-input {
    width: 100%;
    padding: 0.5rem;
    border: 1px solid var(--md-default-fg-color--lightest);
    border-radius: 0.25rem;
    background: var(--md-default-bg-color);
    color: var(--md-default-fg-color);
    font-size: 0.875rem;
    font-family: inherit;
}

.env-name-input:focus {
    outline: none;
    border-color: var(--md-accent-fg-color);
}

.ide-btn-small {
    padding: 0.5rem 0.75rem;
    font-size: 0.8rem;
}

.environment-list {
    flex: 1;
    overflow-y: auto;
    padding: 0.5rem;
}

.env-empty {
    padding: 2rem 1rem;
    text-align: center;
    color: var(--md-default-fg-color--light);
    font-size: 0.875rem;
    font-style: italic;
}

.env-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.625rem;
    margin-bottom: 0.375rem;
    background: var(--md-default-bg-color);
    border: 1px solid var(--md-default-fg-color--lightest);
    border-radius: 0.25rem;
    cursor: pointer;
    transition: all 0.2s;
}

.env-item:hover {
    background: var(--md-default-fg-color--lightest);
    border-color: var(--md-accent-fg-color);
}

.env-item.current {
    background: var(--md-accent-fg-color);
    border-color: var(--md-accent-fg-color);
    color: white;
}

.env-item.current .env-name,
.env-item.current .env-date {
    color: white;
}

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

.env-name {
    font-weight: 600;
    font-size: 0.8rem;
    color: var(--md-default-fg-color);
    margin-bottom: 0.125rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.env-date {
    font-size: 0.75rem;
    color: var(--md-default-fg-color--light);
}

.env-actions {
    display: flex;
    gap: 0.25rem;
    margin-left: 0.5rem;
}

.env-btn {
    width: 28px;
    height: 28px;
    padding: 0;
    background: transparent;
    border: none;
    border-radius: 0.25rem;
    cursor: pointer;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.env-btn svg {
    width: 16px;
    height: 16px;
    stroke: var(--md-default-fg-color--light);
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
    fill: none;
}

.env-btn:hover {
    background: var(--md-default-fg-color--lightest);
}

.env-btn:hover svg {
    stroke: var(--md-accent-fg-color);
}

.env-item.current .env-btn svg {
    stroke: white;
}

.env-item.current .env-btn:hover {
    background: rgba(255, 255, 255, 0.2);
}

.env-delete:hover svg {
    stroke: var(--md-error-fg-color, #ef5350);
}

.web-editors {
    display: flex;
    flex-direction: column;
    border-right: 1px solid var(--md-default-fg-color--lightest);
    min-width: 300px;
    overflow: hidden;
    position: relative;
    height: 100%; /* Explicit full height */
}

/* Resize handle for web editors */
.web-editors-resize-handle {
    position: absolute;
    right: -2px;
    top: 0;
    bottom: 0;
    width: 4px;
    background: transparent;
    cursor: col-resize;
    z-index: 3;
    transition: background 0.2s ease;
}

.web-editors-resize-handle:hover,
.web-editors-resize-handle.resizing {
    background: var(--md-accent-fg-color);
    opacity: 0.6;
}

.web-editor-tabs {
    display: flex;
    background: var(--md-code-bg-color);
    border-bottom: 1px solid var(--md-default-fg-color--lightest);
    padding: 0.375rem 0.75rem;
    gap: 0.375rem;
}

.web-tab {
    padding: 0.375rem 0.75rem;
    background: transparent;
    border: 1px solid transparent;
    border-radius: 0.25rem;
    color: var(--md-default-fg-color--light);
    font-size: 0.8rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

.web-tab:hover {
    background: var(--md-default-fg-color--lightest);
    color: var(--md-default-fg-color);
}

.web-tab.active {
    background: var(--md-primary-fg-color);
    color: white;
    border-color: var(--md-primary-fg-color);
}

.web-monaco {
    flex: 1;
    overflow: hidden;
}

.web-preview {
    display: flex;
    flex-direction: column;
    background: var(--md-default-bg-color);
    min-width: 300px;
    overflow: hidden;
    height: 100%; /* Explicit full height */
}

.preview-header {
    padding: 0.5rem 1rem;
    background: var(--md-code-bg-color);
    border-bottom: 1px solid var(--md-default-fg-color--lightest);
    font-weight: 600;
    font-size: 0.8rem;
    color: var(--md-default-fg-color);
}

#preview-iframe {
    flex: 1;
    border: none;
    background: white;
}

/* Web IDE Responsive */
@media (max-width: 1024px) {
    .web-layout {
        grid-template-columns: auto 1fr;
        grid-template-rows: 1fr 1fr;
        grid-template-areas:
            "sidebar editors"
            "sidebar preview";
    }
    
    .web-sidebar {
        grid-area: sidebar;
        height: 100%; /* Full height across both rows */
    }
    
    .web-editors {
        grid-area: editors;
        border-right: none;
        border-bottom: 1px solid var(--md-default-fg-color--lightest);
    }
    
    .web-preview {
        grid-area: preview;
    }
    
    /* Collapse web sidebar on tablets and smaller */
    .web-sidebar {
        width: 40px !important;
        min-width: 40px !important;
    }
    
    .web-sidebar:not(.force-expanded) {
        width: 40px !important;
        min-width: 40px !important;
    }
}

@media (max-width: 768px) {
    .web-layout {
        grid-template-columns: 1fr;
        grid-template-rows: 1fr 1fr;
        grid-template-areas:
            "editors"
            "preview";
    }
    
    .web-sidebar {
        position: absolute;
        left: 0;
        top: 0;
        bottom: 0;
        width: 200px;
        height: 100%; /* Full viewport height when shown */
        max-height: none;
        z-index: 4;
        box-shadow: 4px 0 12px rgba(0, 0, 0, 0.15);
        transition: transform 0.3s ease;
        border-right: 1px solid var(--md-default-fg-color--lightest);
        border-bottom: none;
        /* Start collapsed on mobile */
        transform: translateX(-100%);
    }
    
    .web-sidebar:not(.force-expanded) {
        transform: translateX(-100%);
    }
    
    .web-editors {
        grid-area: editors;
    }
    
    .web-preview {
        grid-area: preview;
    }
    
    .web-sidebar.collapsed {
        transform: translateX(-100%);
        width: 200px;
    }
    
    .web-sidebar.collapsed .web-sidebar-resize-handle {
        display: none;
    }
    
    .web-sidebar-resize-handle {
        display: none; /* No resize handle on mobile */
    }
    
    .environment-list {
        max-height: none;
    }
    
    .web-editors-resize-handle {
        display: none; /* No resize handle on mobile */
    }
}

@media screen and (min-width: 76.25em) {

}
/* ========================================
   MOBILE OVERLAY MODAL
   Full-page overlay for files/environments on mobile
   ======================================== */

.mobile-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    width: 100vw;
    height: 100vh;
    background: var(--md-default-bg-color);
    z-index: 1000;
    display: none;
    flex-direction: column;
    overflow: hidden;
}

.mobile-overlay.active {
    display: flex;
}

.mobile-overlay-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.25rem;
    background: linear-gradient(135deg, var(--md-primary-fg-color), var(--md-accent-fg-color));
    color: white;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
    min-height: 56px;
}

.mobile-overlay-title {
    font-size: 1.25rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.mobile-overlay-title svg {
    width: 24px;
    height: 24px;
    stroke: currentColor;
    fill: none;
}

.mobile-overlay-close {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: white;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 0.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    transition: all 0.2s ease;
}

.mobile-overlay-close:hover {
    background: rgba(255, 255, 255, 0.3);
}

.mobile-overlay-close:active {
    transform: scale(0.95);
}

.mobile-overlay-close svg {
    width: 24px;
    height: 24px;
    stroke: currentColor;
    stroke-width: 2;
    fill: none;
}

.mobile-overlay-content {
    flex: 1;
    overflow-y: auto;
    padding: 1rem;
    background: var(--md-default-bg-color);
}

/* Show overlay only on mobile */
@media (min-width: 769px) {
    .mobile-overlay {
        display: none !important;
    }
}