:root {
    --bg-color: #0d1117;
    --header-bg: #161b22;
    --sidebar-bg: #0d1117;
    --editor-bg: #1f242c;
    --accent-primary: #8b5cf6; /* Violet */
    --accent-secondary: #06b6d4; /* Cyan */
    --text-main: #f3f4f6;
    --text-muted: #8b949e;
    --border-color: #30363d;
    --hover-bg: rgba(255, 255, 255, 0.05);
    --active-bg: rgba(139, 92, 246, 0.15);
    --active-border: #8b5cf6;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;

    /* Spacing Scale (4px/8px rhythm) */
    --spacing-1: 4px;
    --spacing-2: 8px;
    --spacing-3: 12px;
    --spacing-4: 16px;
    --spacing-5: 20px;
    --spacing-6: 24px;
    --spacing-8: 32px;

    /* Border Radii */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;

    /* Elevations and Shadows */
    --shadow-sm: 0 1px 2px 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-glow: 0 0 15px rgba(139, 92, 246, 0.25);
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    height: 100vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

/* Header Styles */
header {
    background-color: var(--header-bg);
    border-bottom: 1px solid var(--border-color);
    padding: 0.75rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 60px;
    z-index: 10;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.logo {
    font-weight: 700;
    font-size: 1.3rem;
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    display: flex;
    align-items: center;
}

.logo::before {
    content: '</>';
    font-family: 'Fira Code', monospace;
    font-weight: 500;
    font-size: 1rem;
    color: var(--accent-secondary);
    margin-right: 0.4rem;
}

.badge-container {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.35rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.8rem;
    font-weight: 500;
    border: 1px solid var(--border-color);
}

.remote-badge {
    background-color: rgba(255, 255, 255, 0.03);
    color: var(--text-muted);
}

.status-badge {
    background-color: rgba(16, 185, 129, 0.1);
    color: var(--success-color);
    border-color: rgba(16, 185, 129, 0.2);
}

.status-badge.reconnecting {
    background-color: rgba(245, 158, 11, 0.1);
    color: #f59e0b;
    border-color: rgba(245, 158, 11, 0.2);
}

.status-badge.disconnected {
    background-color: rgba(239, 68, 68, 0.1);
    color: var(--danger-color);
    border-color: rgba(239, 68, 68, 0.2);
}

.status-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: currentColor;
    display: inline-block;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.active-file-label {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-family: 'Fira Code', monospace;
    background-color: rgba(0, 0, 0, 0.2);
    padding: 0.35rem 0.75rem;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    max-width: 300px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Button Styles */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    font-size: 0.85rem;
    font-weight: 600;
    border-radius: 6px;
    border: none;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-save {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    color: white;
    box-shadow: 0 4px 12px rgba(139, 92, 246, 0.2);
}

.btn-save:hover:not(:disabled) {
    transform: translateY(-1px);
    box-shadow: 0 6px 16px rgba(139, 92, 246, 0.35);
}

.btn-save:active:not(:disabled) {
    transform: translateY(0);
}

.btn-save:disabled {
    background: #21262d;
    color: #484f58;
    box-shadow: none;
    cursor: not-allowed;
}

.shortcut {
    font-size: 0.7rem;
    opacity: 0.7;
    background-color: rgba(255, 255, 255, 0.15);
    padding: 2px 4px;
    border-radius: 3px;
    margin-left: 0.25rem;
}

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

/* Sidebar Layout */
.sidebar {
    width: 280px;
    background-color: var(--sidebar-bg);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    overflow-y: auto;
}

.sidebar-title {
    padding: 1rem;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--text-muted);
    letter-spacing: 0.08em;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.workspace-root-name {
    padding: 0.75rem 1rem;
    font-size: 0.8rem;
    color: var(--text-main);
    font-weight: 600;
    background-color: rgba(255, 255, 255, 0.01);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.workspace-root-name i {
    color: var(--accent-secondary);
}

.file-tree {
    flex: 1;
    padding: 0.5rem 0;
}

/* File Tree Item Styling */
.tree-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.45rem 1rem;
    font-size: 0.85rem;
    color: var(--text-muted);
    cursor: pointer;
    user-select: none;
    transition: background-color 0.2s, color 0.2s;
    border-left: 2px solid transparent;
}

.tree-item:hover {
    background-color: var(--hover-bg);
    color: var(--text-main);
}

.tree-item.active {
    background-color: var(--active-bg);
    color: var(--text-main);
    border-left-color: var(--active-border);
}

.tree-item.directory {
    color: var(--text-main);
    font-weight: 500;
}

.tree-item.directory i {
    color: var(--accent-secondary);
}

.tree-item.file i {
    color: var(--accent-primary);
}

.tree-item .indent {
    width: 1rem;
    height: 100%;
}

.loading-spinner {
    padding: 2rem;
    text-align: center;
    font-size: 0.85rem;
    color: var(--text-muted);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
}

.loading-spinner i {
    color: var(--accent-secondary);
}

/* Editor Area Layout */
.editor-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    background-color: var(--editor-bg);
    position: relative;
}

#monaco-container {
    width: 100%;
    height: 100%;
    outline: none;
}

/* Splash/Welcome Screen */
.editor-splash {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: var(--bg-color);
    z-index: 5;
    padding: 2rem;
    text-align: center;
}

.splash-content {
    max-width: 450px;
}

.splash-logo {
    font-size: 4rem;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.editor-splash h2 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    letter-spacing: -0.02em;
}

.editor-splash p {
    color: var(--text-muted);
    font-size: 0.9rem;
    line-height: 1.5;
}

/* File Loading Screen */
.editor-loading {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: rgba(13, 17, 23, 0.7);
    backdrop-filter: blur(4px);
    z-index: 6;
    color: var(--text-main);
    text-align: center;
}

.loading-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.loading-content i {
    color: var(--accent-secondary);
}

/* Notification Toast */
.toast {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background-color: #1f2937;
    border: 1px solid var(--border-color);
    border-left: 4px solid var(--success-color);
    padding: 1rem 1.5rem;
    border-radius: 8px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.9rem;
    color: var(--text-main);
    transform: translateY(120%);
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    z-index: 100;
}

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

.toast i {
    color: var(--success-color);
    font-size: 1.1rem;
}

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

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

/* AI Prompt Bar Styles */
.ai-prompt-bar {
    background-color: rgba(22, 27, 34, 0.85);
    border-top: 1px solid var(--border-color);
    padding: 0.75rem 1.5rem;
    backdrop-filter: blur(12px);
    z-index: 8;
}

.ai-prompt-input-container {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    max-width: 1000px;
    margin: 0 auto;
}

.ai-icon {
    font-size: 1.1rem;
    color: var(--accent-secondary);
    text-shadow: 0 0 8px rgba(6, 182, 212, 0.4);
}

#ai-prompt-input {
    flex: 1;
    background-color: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 0.6rem 1rem;
    color: var(--text-main);
    font-size: 0.9rem;
    font-family: inherit;
    outline: none;
    transition: all 0.2s ease;
}

#ai-prompt-input:focus {
    border-color: var(--accent-secondary);
    box-shadow: 0 0 0 2px rgba(6, 182, 212, 0.15);
}

.btn-ai {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    color: white;
    box-shadow: 0 4px 12px rgba(139, 92, 246, 0.2);
}

.btn-ai:hover:not(:disabled) {
    transform: translateY(-1px);
    box-shadow: 0 6px 16px rgba(6, 182, 212, 0.35);
}

.btn-ai:disabled {
    background: #21262d;
    color: #484f58;
    box-shadow: none;
    cursor: not-allowed;
}

/* Adjust Monaco height to fit prompt bar */
.editor-area {
    display: flex;
    flex-direction: column;
}

#monaco-container {
    flex: 1;
    min-height: 0;
}

/* Workspace AI Agent Styles */
.workspace-ai-section {
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
    background-color: rgba(255, 255, 255, 0.01);
}

.workspace-ai-title {
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--text-main);
    letter-spacing: 0.03em;
    margin-bottom: 0.75rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.workspace-ai-title i {
    color: var(--accent-primary);
    text-shadow: 0 0 8px rgba(139, 92, 246, 0.4);
}

.workspace-ai-input-container {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

#workspace-ai-prompt {
    width: 100%;
    height: 70px;
    background-color: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 0.5rem 0.75rem;
    color: var(--text-main);
    font-size: 0.85rem;
    font-family: inherit;
    resize: none;
    outline: none;
    transition: all 0.2s ease;
}

#workspace-ai-prompt:focus {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 2px rgba(139, 92, 246, 0.15);
}

.btn-workspace-ai {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    color: white;
    font-size: 0.8rem;
    font-weight: 600;
    padding: 0.45rem 0.75rem;
    border-radius: 6px;
    border: none;
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(139, 92, 246, 0.15);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    transition: all 0.2s ease;
}

.btn-workspace-ai:hover:not(:disabled) {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(139, 92, 246, 0.3);
}

.btn-workspace-ai:disabled {
    background: #21262d;
    color: #484f58;
    box-shadow: none;
    cursor: not-allowed;
}

.workspace-ai-status {
    margin-top: 0.75rem;
    font-size: 0.8rem;
    color: var(--accent-secondary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 500;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.7; transform: scale(0.95); }
}

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

/* File Tree Item Copy Button Layout */
.tree-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: relative;
}

.tree-item-content {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex: 1;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.file-copy-icon {
    font-size: 0.8rem;
    color: var(--text-muted);
    opacity: 0;
    padding: 0.25rem;
    border-radius: 4px;
    transition: all 0.2s ease;
    cursor: pointer;
}

.tree-item:hover .file-copy-icon {
    opacity: 0.7;
}

.tree-item .file-copy-icon:hover {
    opacity: 1;
    background-color: rgba(255, 255, 255, 0.08);
    color: var(--accent-secondary);
}

/* Version Select Styles */
.version-container {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8rem;
    color: var(--text-muted);
    background-color: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 0.25rem 0.5rem;
}

.version-container label {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    font-weight: 500;
}

.version-container label i {
    color: var(--accent-primary);
}

.version-select {
    background-color: transparent;
    border: none;
    color: var(--text-main);
    font-size: 0.8rem;
    font-family: inherit;
    outline: none;
    cursor: pointer;
    max-width: 200px;
}

.version-select option {
    background-color: var(--bg-color);
    color: var(--text-main);
}

/* AI Chat Assistant Right Sidebar */
.ai-chat-sidebar {
    width: 380px;
    background-color: var(--sidebar-bg);
    border-left: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    height: 100%;
}

.chat-header {
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: rgba(0, 0, 0, 0.05);
}

.chat-title {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-main);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.chat-title i {
    color: var(--accent-primary);
    text-shadow: 0 0 8px rgba(139, 92, 246, 0.4);
}

.chat-model-badge {
    background-color: rgba(6, 182, 212, 0.1);
    color: var(--accent-secondary);
    border: 1px solid rgba(6, 182, 212, 0.15);
    font-size: 0.75rem;
    padding: 2px 6px;
    border-radius: 4px;
    font-weight: 600;
}

/* Messages container */
.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.chat-message {
    max-width: 85%;
    display: flex;
    flex-direction: column;
}

.chat-message.user {
    align-self: flex-end;
    align-items: flex-end;
}

.chat-message.assistant {
    align-self: flex-start;
    align-items: flex-start;
    width: 100%;
}

.chat-message .message-content {
    padding: 0.75rem 1rem;
    border-radius: 12px;
    font-size: 0.85rem;
    line-height: 1.5;
    word-break: break-word;
}

.chat-message.user .message-content {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    color: #fff;
    border-bottom-right-radius: 2px;
}

.chat-message.assistant .message-content {
    background-color: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    border-bottom-left-radius: 2px;
    width: 100%;
}

/* Chat Markdown Formatting */
.chat-message.assistant .message-content p {
    margin-bottom: 0.5rem;
}
.chat-message.assistant .message-content p:last-child {
    margin-bottom: 0;
}

.chat-message.assistant .message-content ul, 
.chat-message.assistant .message-content ol {
    margin-left: 1.2rem;
    margin-bottom: 0.5rem;
}

.chat-message.assistant .message-content li {
    margin-bottom: 0.25rem;
}

.chat-message.assistant .message-content code {
    background-color: rgba(0, 0, 0, 0.3);
    padding: 2px 4px;
    border-radius: 4px;
    font-family: 'Fira Code', monospace;
    font-size: 0.8rem;
    color: #38bdf8;
}

.chat-message.assistant .message-content pre {
    background-color: rgba(0, 0, 0, 0.4);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 0.75rem;
    margin: 0.75rem 0;
    overflow-x: auto;
    width: 100%;
}

.chat-message.assistant .message-content pre code {
    background-color: transparent;
    padding: 0;
    color: #cbd5e1;
    font-size: 0.8rem;
    display: block;
}

/* File indicator cards inside chat */
.file-change-card {
    background-color: rgba(6, 182, 212, 0.04);
    border: 1px dashed rgba(6, 182, 212, 0.25);
    border-radius: 8px;
    padding: 0.75rem;
    margin-top: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
}

.file-change-meta {
    font-size: 0.8rem;
    color: var(--text-main);
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.file-change-meta i {
    color: var(--accent-secondary);
}

.btn-apply-diff {
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    color: var(--accent-secondary);
    font-size: 0.75rem;
    font-weight: 600;
    padding: 4px 10px;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-apply-diff:hover {
    background-color: rgba(6, 182, 212, 0.08);
    border-color: var(--accent-secondary);
}

/* Input area */
.chat-input-panel {
    padding: 1rem;
    border-top: 1px solid var(--border-color);
    background-color: rgba(0, 0, 0, 0.1);
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

#chat-input {
    width: 100%;
    height: 70px;
    background-color: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 0.6rem 0.75rem;
    color: var(--text-main);
    font-size: 0.85rem;
    font-family: inherit;
    resize: none;
    outline: none;
    transition: all 0.2s ease;
}

#chat-input:focus {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 2px rgba(139, 92, 246, 0.15);
}

.chat-input-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.auto-apply-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 0.4rem;
    cursor: pointer;
    user-select: none;
}

.auto-apply-label input {
    accent-color: var(--accent-primary);
    cursor: pointer;
}

.btn-chat-send {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    color: white;
    font-size: 0.8rem;
    font-weight: 600;
    padding: 0.45rem 1rem;
    border-radius: 6px;
    border: none;
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(139, 92, 246, 0.15);
    display: flex;
    align-items: center;
    gap: 0.4rem;
    transition: all 0.2s ease;
}

.btn-chat-send:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(139, 92, 246, 0.3);
}

.btn-chat-stop {
    background: rgba(239, 68, 68, 0.1);
    color: #ef4444;
    border: 1px solid rgba(239, 68, 68, 0.3);
    font-size: 0.8rem;
    font-weight: 600;
    padding: 0.45rem 1rem;
    border-radius: 6px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.4rem;
    transition: all 0.2s ease;
}

.btn-chat-stop:hover {
    background: rgba(239, 68, 68, 0.2);
    border-color: #ef4444;
    transform: translateY(-1px);
}

#chat-input:disabled {
    opacity: 0.55;
    cursor: not-allowed;
    background-color: rgba(0, 0, 0, 0.45) !important;
    border-color: var(--border-color) !important;
}


/* Typing loading indicator */
.typing-loader {
    display: flex;
    gap: 4px;
    padding: 6px 0;
}

.typing-loader span {
    width: 6px;
    height: 6px;
    background-color: var(--text-muted);
    border-radius: 50%;
    animation: typing 1.4s infinite ease-in-out both;
}

.typing-loader span:nth-child(1) { animation-delay: -0.32s; }
.typing-loader span:nth-child(2) { animation-delay: -0.16s; }

@keyframes typing {
    0%, 80%, 100% { transform: scale(0); }
    40% { transform: scale(1); }
}

/* Layout Switcher Toggles in Top Bar */
.layout-toggle-container {
    display: flex;
    background-color: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    padding: 3px;
    border-radius: var(--radius-md);
    margin-right: var(--spacing-3);
}

.btn-layout {
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 0.8rem;
    font-weight: 500;
    padding: 5px 12px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    transition: all 0.2s ease;
}

.btn-layout:hover {
    color: var(--text-main);
    background-color: var(--hover-bg);
}

.btn-layout.active {
    color: #fff;
    background-color: var(--accent-primary);
    box-shadow: var(--shadow-sm);
}

.btn-layout:focus-visible {
    outline: 2px solid var(--accent-secondary);
    outline-offset: 1px;
}

/* Editor & Preview Flex Container */
.editor-workspace-wrapper {
    flex: 1;
    display: flex;
    height: 100%;
    width: 100%;
    overflow: hidden;
}

#monaco-container {
    flex: 1;
    height: 100%;
    min-width: 0;
}

/* Live Preview Panel */
.preview-pane {
    flex: 1;
    height: 100%;
    display: flex;
    flex-direction: column;
    background-color: #fff; /* Static previews default to white canvas backgrounds */
    border-left: 1px solid var(--border-color);
    min-width: 0;
    transition: all 0.2s ease;
}

.preview-toolbar {
    height: 38px;
    background-color: var(--header-bg);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 var(--spacing-3);
    user-select: none;
    color: var(--text-main);
}

.preview-file-label {
    font-size: 0.75rem;
    font-family: 'Fira Code', monospace;
    color: var(--text-muted);
    background-color: rgba(0, 0, 0, 0.2);
    padding: 2px var(--spacing-2);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    max-width: 250px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    display: inline-block;
}

.preview-toolbar-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.device-toggle {
    display: flex;
    background-color: rgba(0, 0, 0, 0.25);
    padding: 2px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    margin-right: var(--spacing-1);
}

.btn-device {
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 0.75rem;
    padding: 4px var(--spacing-2);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.15s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-device:hover {
    color: var(--text-main);
}

.btn-device.active {
    background-color: var(--accent-secondary);
    color: #fff;
}

.btn-preview-action {
    background: rgba(255,255,255,0.03);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    padding: 5px 8px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 0.75rem;
    transition: all 0.15s ease;
}

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

.preview-frame-container {
    flex: 1;
    background-color: #1e1e1e; /* background wrapper for shrunken frame views */
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: auto;
    position: relative;
    padding: var(--spacing-4);
}

#preview-iframe {
    width: 100%;
    height: 100%;
    border: none;
    background-color: #fff;
    box-shadow: var(--shadow-md);
    transition: width 0.3s ease, height 0.3s ease;
}

/* Redesigned Diff Panel inside Chat Bubbles */
.diff-container {
    margin-top: var(--spacing-3);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background-color: rgba(0, 0, 0, 0.25);
    overflow: hidden;
    width: 100%;
    box-shadow: var(--shadow-sm);
}

.diff-file-header {
    background-color: rgba(255, 255, 255, 0.02);
    border-bottom: 1px solid var(--border-color);
    padding: 6px var(--spacing-3);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.diff-filename {
    font-family: 'Fira Code', monospace;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-main);
}

.css-badge {
    background-color: rgba(245, 158, 11, 0.1);
    color: var(--warning-color);
    border: 1px solid rgba(245, 158, 11, 0.2);
    font-size: 0.7rem;
    font-weight: 600;
    padding: 1px 6px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    gap: 4px;
}

.css-badge.success-badge {
    background-color: rgba(16, 185, 129, 0.1);
    color: var(--success-color);
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.css-badge i {
    font-size: 0.75rem;
}

.diff-body {
    max-height: 250px;
    overflow-y: auto;
    font-family: 'Fira Code', monospace;
    font-size: 0.75rem;
    line-height: 1.4;
    padding: var(--spacing-2) 0;
}

.diff-line {
    display: flex;
    padding: 1px var(--spacing-3);
    white-space: pre-wrap;
    word-break: break-all;
}

.diff-line.added {
    background-color: rgba(16, 185, 129, 0.1);
    color: #a7f3d0;
}

.diff-line.removed {
    background-color: rgba(239, 68, 68, 0.1);
    color: #fca5a5;
    text-decoration: line-through;
}

.diff-line.unchanged {
    color: var(--text-muted);
}

.diff-line.collapsed-context {
    background-color: rgba(255, 255, 255, 0.01);
    color: var(--text-muted);
    font-style: italic;
    padding: var(--spacing-1) var(--spacing-3);
    border-top: 1px dashed var(--border-color);
    border-bottom: 1px dashed var(--border-color);
    text-align: center;
}

.diff-prefix {
    width: 15px;
    user-select: none;
    font-weight: bold;
    display: inline-block;
}

.diff-code {
    flex: 1;
}

/* Action controls per diff card */
.diff-actions {
    display: flex;
    gap: var(--spacing-2);
    padding: var(--spacing-2) var(--spacing-3);
    background-color: rgba(0, 0, 0, 0.1);
    border-top: 1px solid var(--border-color);
    justify-content: flex-end;
}

.btn-diff-action {
    font-size: 0.75rem;
    font-weight: 600;
    padding: 3px var(--spacing-3);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-diff-action.accept {
    background-color: var(--success-color);
    border: none;
    color: white;
}

.btn-diff-action.accept:hover {
    background-color: #059669;
    transform: translateY(-1px);
}

.btn-diff-action.reject {
    background-color: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    color: var(--text-muted);
}

.btn-diff-action.reject:hover {
    background-color: var(--hover-bg);
    color: var(--text-main);
}

/* Master buttons container for all diffs */
.master-diff-container {
    margin-top: var(--spacing-3);
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
}

.master-diff-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    margin-top: var(--spacing-2);
}

.auto-apply-timer {
    font-size: 0.75rem;
    color: var(--accent-secondary);
    display: flex;
    align-items: center;
    gap: 4px;
}

.auto-apply-timer i {
    animation: fa-spin 2s linear infinite;
}

.btn-accept-all {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    color: white;
    font-size: 0.8rem;
    font-weight: 600;
    padding: var(--spacing-2) var(--spacing-4);
    border-radius: var(--radius-sm);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 6px;
    box-shadow: var(--shadow-sm);
}

.btn-accept-all:hover {
    box-shadow: var(--shadow-glow);
    transform: translateY(-1px);
}

/* Sidebar Chat Tabs & Embedded Browser styling */
.chat-tabs {
    display: flex;
    background-color: rgba(0, 0, 0, 0.2);
    border-bottom: 1px solid var(--border-color);
    width: 100%;
}

.chat-tab-btn {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 0.8rem;
    font-weight: 600;
    padding: 10px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
    transition: all 0.2s ease;
    border-bottom: 2px solid transparent;
}

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

.chat-tab-btn.active {
    color: var(--accent-primary);
    border-bottom-color: var(--accent-primary);
    background-color: rgba(255, 255, 255, 0.01);
}

.chat-tab-content-wrapper {
    transition: opacity 0.15s ease-in-out;
}

.sidebar-preview-toolbar {
    height: 34px;
    background-color: var(--header-bg);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    padding: 0 var(--spacing-2);
    gap: var(--spacing-2);
}

.preview-address-bar {
    flex: 1;
    background-color: rgba(0,0,0,0.3);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 4px var(--spacing-2);
    font-size: 0.7rem;
    color: var(--text-muted);
    font-family: 'Fira Code', monospace;
    display: flex;
    align-items: center;
    gap: 6px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.btn-sidebar-refresh {
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 4px 8px;
    font-size: 0.8rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-sidebar-refresh:hover {
    color: var(--text-main);
}

.sidebar-preview-frame-container {
    flex: 1;
    background-color: #fff;
    position: relative;
    height: calc(100% - 34px);
    width: 100%;
}

#sidebar-preview-iframe {
    width: 100%;
    height: 100%;
    border: none;
    background-color: #fff;
}

/* Enhanced prompt styling */
.enhanced-prompt-box {
    background: linear-gradient(135deg, rgba(168, 85, 247, 0.08), rgba(236, 72, 153, 0.05));
    border-left: 3px solid var(--accent-secondary);
    border-radius: var(--radius-sm);
    padding: var(--spacing-3);
    margin-bottom: var(--spacing-3);
    font-size: 0.8rem;
    box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.2);
}

.enhanced-prompt-header {
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--accent-secondary);
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    margin-bottom: var(--spacing-2);
    letter-spacing: 0.5px;
}

.enhanced-prompt-body {
    color: var(--text-main);
    line-height: 1.5;
}

.enhanced-prompt-body p {
    margin: 0;
}