:root {
    --primary-color: #10A37F;
    --secondary-color: #202123;
    --background-color: #FFFFFF;
    --text-color: #353740;
    --accent-color: #6E6E80;
    --error-color: #dc3545;
    --dynasaur-color: #28a745; /* Green color for DynaSaur elements */
    --light-gray: #F5F5F5; /* Light gray background for sidebar and other elements */
    --message-padding: 16px;
    --code-bg-color: #f8f9fa;
    --code-border-color: #e5e5e5;
    --border-radius-lg: 12px;
    --border-radius-md: 8px;
    --border-radius-sm: 4px;
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

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

html, body {
    height: 100%;
    width: 100%;
    overscroll-behavior: none;
}

/* Mobile viewport height fix for iOS */
@supports (-webkit-touch-callout: none) {
    .chat-container {
        height: -webkit-fill-available;
    }
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
    font-size: 16px;
}

/* Fix for Feather icons */
[data-feather] {
    stroke: currentColor;
    width: 24px;
    height: 24px;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
    fill: none;
    display: inline-block;
    vertical-align: middle;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0;
    height: 100%;
    overflow: hidden;
}

/* App Layout with Sidebar */
.app-layout {
    display: flex;
    height: 100vh;
    overflow: hidden;
    position: relative;
}

/* History Sidebar */
.history-sidebar {
    width: 280px;
    background-color: var(--light-gray);
    border-right: 1px solid var(--code-border-color);
    display: flex;
    flex-direction: column;
    height: 100%;
    position: relative;
    transition: transform 0.3s ease;
    z-index: 20;
}

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

.sidebar-header h2 {
    font-size: 1.2rem;
    margin: 0;
    color: var(--secondary-color);
}

.sidebar-actions {
    display: flex;
    gap: var(--spacing-xs);
    align-items: center;
}

.sidebar-actions button {
    height: 32px;
    width: 32px;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.history-item {
    position: relative;
}

.history-item .delete-btn {
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    opacity: 0;
    transition: opacity 0.2s ease;
    height: 24px;
    width: 24px;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(220, 53, 69, 0.1);
    border: none;
    color: var(--error-color);
    border-radius: 50%;
}

.history-item:hover .delete-btn {
    opacity: 1;
}

.history-list {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-sm);
}

.history-item {
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius-md);
    margin-bottom: var(--spacing-sm);
    cursor: pointer;
    transition: all 0.2s ease;
    background-color: var(--background-color);
    border: 1px solid var(--code-border-color);
}

.history-item:hover {
    background-color: rgba(16, 163, 127, 0.05);
}

.history-item.active {
    background-color: rgba(16, 163, 127, 0.1);
    border-left: 3px solid var(--primary-color);
}

.history-item-title {
    font-weight: 500;
    margin-bottom: 4px;
    color: var(--secondary-color);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.history-item-timestamp {
    font-size: 0.8rem;
    color: var(--accent-color);
}

.history-item-badge {
    display: inline-block;
    font-size: 0.7rem;
    padding: 2px 6px;
    border-radius: 10px;
    margin-left: 5px;
    background-color: var(--light-gray);
    color: var(--accent-color);
}

.history-source-direct {
    background-color: #e3f2fd;
    color: #0d6efd;
}

.history-source-web {
    background-color: #e8f5e9;
    color: #28a745;
}

.history-source-file {
    background-color: #fff3e0;
    color: #fd7e14;
}

.history-source-dynasaur {
    background-color: #e8eaf6;
    color: #6f42c1;
}

.history-empty {
    padding: var(--spacing-md);
    text-align: center;
    color: var(--accent-color);
}

/* History entry styling when displayed in chat */
.history-entry {
    border: 1px solid var(--code-border-color);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-md);
    background-color: rgba(247, 247, 248, 0.7);
    margin-top: var(--spacing-sm);
}

.history-entry p {
    margin-bottom: var(--spacing-sm);
    color: var(--accent-color);
}

.history-entry strong {
    color: var(--secondary-color);
    display: inline-block;
    margin-bottom: var(--spacing-xs);
}

.btn-icon {
    width: 32px;
    height: 32px;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    background-color: transparent;
    border: none;
    color: var(--accent-color);
    transition: all 0.2s ease;
}

/* Ensure burger menu icon is visible */
#toggleSidebar {
    color: var(--secondary-color);
    background-color: var(--light-gray);
    border: 1px solid var(--code-border-color);
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-icon:hover {
    background-color: rgba(0, 0, 0, 0.05);
    color: var(--secondary-color);
}

.chat-container {
    background-color: var(--background-color);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--box-shadow);
    height: 100vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    flex: 1;
}

.chat-header {
    padding: var(--spacing-md);
    border-bottom: 1px solid #e5e5e5;
    display: flex;
    align-items: center;
    justify-content: space-between;
    background-color: var(--background-color);
    position: sticky;
    top: 0;
    z-index: 10;
}

.chat-header h1 {
    margin: 0;
    color: var(--secondary-color);
    font-size: clamp(1.2rem, 4vw, 1.5rem);
    font-weight: 600;
}

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

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-md);
    scroll-behavior: smooth;
    -webkit-overflow-scrolling: touch;
}

.message {
    margin-bottom: var(--spacing-md);
    max-width: 85%;
    animation: fadeIn 0.3s ease-in-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.message.user {
    margin-left: auto;
}

.message-content {
    padding: var(--spacing-md);
    border-radius: var(--border-radius-md);
    background-color: #f7f7f8;
    word-break: break-word;
    hyphens: auto;
}

.message.user .message-content {
    background-color: var(--primary-color);
    color: white;
}

.message.bot .message-content {
    background-color: #f7f7f8;
}

.message.error .message-content {
    background-color: var(--error-color);
    color: white;
    opacity: 0.9;
}

.message.system .message-content {
    background-color: #f0f7ff;
    border-left: 3px solid #0d6efd;
    color: var(--secondary-color);
    font-style: italic;
}

.message.system.error .message-content {
    background-color: #fff5f5;
    border-left: 3px solid var(--error-color);
}

/* Message typing effect */
.message.typing .message-content {
    display: flex;
    align-items: center;
    min-height: 32px;
}

.typing-indicator {
    display: inline-flex;
    align-items: center;
    padding: 6px 8px;
}

.typing-indicator span {
    height: 8px;
    width: 8px;
    margin: 0 1px;
    background-color: var(--accent-color);
    display: block;
    border-radius: 50%;
    opacity: 0.4;
    animation: typing 1s infinite;
}

.typing-indicator span:nth-child(2) {
    animation-delay: 0.2s;
}

.typing-indicator span:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes typing {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-5px); }
}

.chat-input-container {
    padding: var(--spacing-md);
    border-top: 1px solid #e5e5e5;
    background-color: var(--background-color);
    position: sticky;
    bottom: 0;
    z-index: 10;
}

.tools-container {
    margin-top: var(--spacing-md);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.input-group {
    position: relative;
    display: flex;
    flex-wrap: nowrap;
    align-items: stretch;
    width: 100%;
    transition: all 0.2s ease;
}

/* Main chat input optimization */
.main-input-group {
    background-color: #f5f5f5;
    border-radius: var(--border-radius-md);
    padding: 4px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    margin-bottom: 0;
}

.main-input-group .form-control {
    background-color: transparent;
    border: none;
    box-shadow: none;
}

.main-input-group .form-control:focus {
    box-shadow: none;
    outline: none;
}

.main-input-group .btn {
    border-radius: 50%;
    width: 38px;
    height: 38px;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: 0.5rem 1rem;
    font-weight: 500;
    transition: all 0.2s ease;
    border-radius: var(--border-radius-md);
    white-space: nowrap;
}

.btn svg {
    width: 18px;
    height: 18px;
}

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

.btn-primary:hover, .btn-primary:focus {
    background-color: #0c8c6a;
    border-color: #0c8c6a;
    transform: translateY(-1px);
}

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

.btn-secondary:hover, .btn-secondary:focus {
    background-color: #1a1a1c;
    border-color: #1a1a1c;
    transform: translateY(-1px);
}

.form-control {
    border: 1px solid #e5e5e5;
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius-md);
    transition: all 0.2s ease;
    width: 100%;
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(16, 163, 127, 0.25);
    outline: none;
}

code {
    font-family: 'Roboto Mono', monospace;
    background-color: #f7f7f8;
    padding: 2px 4px;
    border-radius: 4px;
}

pre {
    background-color: #f7f7f8;
    padding: 12px;
    border-radius: 8px;
    overflow-x: auto;
    margin: 12px 0;
}

pre code {
    background-color: transparent;
    padding: 0;
    font-size: 14px;
    line-height: 1.4;
    color: #333;
}

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

.execution-results {
    margin-top: 16px;
    padding: 12px;
    background-color: #f7f7f8;
    border-radius: 8px;
    border-left: 4px solid var(--dynasaur-color);
}

.execution-success {
    color: var(--dynasaur-color);
    font-weight: 500;
}

.execution-error {
    color: var(--error-color);
    font-weight: 500;
}

/* DynaSaur code execution and preview styles */
.dynasaur-section {
    transition: all 0.3s ease;
}

.code-preview-panel {
    background-color: var(--code-bg-color);
    border: 1px solid var(--code-border-color);
    border-radius: 8px;
    overflow: hidden;
    transition: all 0.3s ease;
}

.preview-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 15px;
    background-color: #eaecef;
    border-bottom: 1px solid var(--code-border-color);
}

.preview-header h5 {
    margin: 0;
    font-size: 1rem;
    font-weight: 600;
}

.preview-actions {
    display: flex;
    gap: 8px;
}

.code-preview {
    margin: 0 !important;
    border-radius: 0 !important;
    max-height: 400px;
    overflow-y: auto;
}

/* Prism.js line numbers enhancement */
.line-numbers .line-numbers-rows {
    border-right: 1px solid #ddd;
}

/* Code editor modal */
.code-editor {
    font-family: 'Roboto Mono', monospace;
    font-size: 14px;
    line-height: 1.5;
    resize: vertical;
}

/* Execution animation */
.executing {
    position: relative;
}

.executing::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(40, 167, 69, 0.1);
    border-radius: 8px;
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0% { opacity: 0.6; }
    50% { opacity: 0.3; }
    100% { opacity: 0.6; }
}

.loading {
    opacity: 0.5;
    pointer-events: none;
    position: relative;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 16px;
    height: 16px;
    margin: -8px 0 0 -8px;
    border: 2px solid transparent;
    border-top-color: currentColor;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* Responsive styles for tablets */
@media (max-width: 992px) {
    .container {
        max-width: 100%;
    }
    
    .chat-container {
        height: 100vh;
        border-radius: 0;
    }
    
    .btn-success, .btn-secondary {
        padding: 0.5rem 0.75rem;
    }
}

/* Responsive styles for mobile */
@media (max-width: 768px) {
    .container {
        padding: 0;
    }
    
    /* Sidebar adjustments for mobile */
    .app-layout {
        position: relative;
    }
    
    .history-sidebar {
        position: absolute;
        top: 0;
        left: 0;
        bottom: 0;
        transform: translateX(-100%);
        z-index: 1000;
        width: 85%;
        background-color: var(--light-gray);
        box-shadow: 2px 0 10px rgba(0, 0, 0, 0.1);
    }
    
    .history-sidebar.show {
        transform: translateX(0);
    }
    
    .chat-container {
        box-shadow: none;
        width: 100%;
    }
    
    .chat-header {
        padding: var(--spacing-sm) var(--spacing-md);
    }
    
    .chat-messages {
        padding: var(--spacing-sm);
    }
    
    .message {
        max-width: 90%;
    }
    
    .message-content {
        padding: var(--spacing-sm) var(--spacing-md);
    }
    
    .chat-input-container {
        padding: var(--spacing-sm);
    }
    
    /* Keep the main chat input horizontal on mobile */
    .input-group {
        flex-direction: row;
    }
    
    .main-input-group {
        flex-direction: row;
        background-color: #f5f5f5;
    }
    
    .input-group:not(.main-input-group) {
        border: 1px solid var(--code-border-color);
        border-radius: var(--border-radius-md);
        background-color: #f5f5f5;
        overflow: hidden;
    }
    
    .input-group:not(.main-input-group) > .form-control {
        border: none;
        border-radius: 0;
        background-color: transparent;
    }
    
    .input-group:not(.main-input-group) > .btn {
        border-radius: 0;
        border-left: 1px solid var(--code-border-color);
    }
    
    /* Adjust the circular send button on mobile */
    .main-input-group .btn {
        margin-top: 0;
        min-height: unset;
        height: 38px;
        width: 38px;
    }
    
    /* Fix for file input on mobile */
    input[type="file"].form-control {
        padding: 0.5rem;
    }
    
    /* Make buttons more touch-friendly */
    .btn {
        padding: 0.75rem 1rem;
        font-size: 1rem;
    }
    
    .code-preview {
        max-height: 250px;
        font-size: 13px;
    }
    
    .preview-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .preview-actions {
        margin-top: var(--spacing-sm);
        width: 100%;
        justify-content: space-between;
    }
    
    /* Modal adjustments for mobile */
    .modal-dialog {
        margin: 0.5rem;
    }
    
    .modal-body {
        padding: var(--spacing-sm);
    }
    
    .code-editor {
        font-size: 13px;
    }
}

/* Extra small devices */
@media (max-width: 576px) {
    .chat-header h1 {
        font-size: 1.2rem;
    }
    
    .tools-container {
        display: flex !important;
        flex-direction: column;
        gap: var(--spacing-md);
        position: relative !important;
        visibility: visible !important;
        opacity: 1 !important;
    }
    
    /* Tools panels and tabs for mobile */
    .tool-panel {
        transition: all 0.3s ease;
        width: 100%;
        display: block !important;
    }
    
    .tools-tabs {
        display: flex;
        overflow-x: auto;
        margin-bottom: var(--spacing-md);
        border-bottom: 1px solid #e5e5e5;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none; /* Firefox */
        -ms-overflow-style: none; /* IE/Edge */
        justify-content: space-around;
        width: 100%;
        background-color: var(--background-color);
        z-index: 5;
        position: relative;
    }
    
    .tools-tabs::-webkit-scrollbar {
        display: none; /* Chrome/Safari/Opera */
    }
    
    .tools-tab {
        padding: var(--spacing-md) var(--spacing-lg);
        white-space: nowrap;
        cursor: pointer;
        border-bottom: 3px solid transparent;
        transition: all 0.2s ease;
        color: var(--accent-color);
        text-align: center;
        flex: 1;
        font-size: 1rem;
        font-weight: 500;
    }
    
    .tools-tab.active {
        border-bottom-color: var(--primary-color);
        font-weight: 600;
        color: var(--primary-color);
    }
    
    .tools-tab:hover {
        background-color: rgba(16, 163, 127, 0.05);
    }
    
    /* Enhance touch targets */
    .btn, .form-control {
        min-height: 48px;
    }
}

/* Very small devices like iPhone mini (375px width) */
@media (max-width: 375px), (max-height: 667px) {
    .tools-container {
        display: flex !important;
        flex-direction: column;
        gap: var(--spacing-sm);
        position: fixed !important;
        bottom: 0 !important;
        left: 0 !important;
        right: 0 !important;
        visibility: visible !important;
        opacity: 1 !important;
        background-color: var(--background-color);
        padding: var(--spacing-sm);
        z-index: 1000;
        box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.1);
        border-top: 1px solid var(--border-color);
    }
    
    .tools-tabs {
        margin-bottom: var(--spacing-sm);
        display: flex;
        justify-content: space-between;
        width: 100%;
        background-color: var(--background-color);
    }
    
    .tools-tab {
        padding: var(--spacing-sm) 5px;
        font-size: 0.85rem;
        text-align: center;
        flex: 1;
    }
    
    .tool-panel {
        margin-bottom: var(--spacing-sm);
        display: none !important;
        height: 0;
        overflow: hidden;
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
    }
    
    .tool-panel.active {
        display: block !important;
        height: auto;
        overflow: visible;
        opacity: 1;
        visibility: visible;
    }
    
    .chat-container {
        padding-bottom: 200px;
    }
    
    .chat-messages {
        max-height: calc(100vh - 280px);
    }
    
    /* Compact buttons */
    .btn {
        padding-left: 10px;
        padding-right: 10px;
    }
    
    .input-group .btn {
        min-width: 40px;
    }
}