:root {
    --ds-sidebar-bg: #202123;
    --ds-main-bg: #343541;
    --ds-user-msg-bg: #444654;
    --ds-bot-msg-bg: #40414f;
    --ds-text-primary: #ececf1;
    --ds-text-secondary: #acacbe;
    --ds-accent: #10a37f;
    --ds-code-bg: #1e1e1e;
    --ds-code-header-bg: #2d2d2d;
    --ds-border: #565869;
    --ds-line-numbers: #6e6e7a;
    --ds-h1-color: #ececf1;
    --ds-h2-color: #ececf1;
    --ds-h3-color: #ececf1;
    --ds-list-bullet: #acacbe;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--ds-main-bg);
    color: var(--ds-text-primary);
    height: 100vh;
    overflow: hidden;
    line-height: 1.5;
}

.ds-app {
    display: flex;
    height: 100vh;
}

/* Sidebar */
.ds-sidebar {
    width: 260px;
    background-color: var(--ds-sidebar-bg);
    display: flex;
    flex-direction: column;
    height: 100%;
    border-right: 1px solid rgba(0, 0, 0, 0.2);
}

.ds-sidebar-header {
    padding: 12px;
}

.ds-new-chat {
    display: flex;
    align-items: center;
    gap: 8px;
    width: 100%;
    padding: 12px;
    border-radius: 6px;
    border: 1px solid var(--ds-border);
    background-color: transparent;
    color: white;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.2s;
}

.ds-new-chat:hover {
    background-color: rgba(255, 255, 255, 0.05);
}

.ds-new-chat svg {
    width: 16px;
    height: 16px;
}

/* Main Content */
.ds-main {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    position: relative;
}

.ds-chat-container {
    flex: 1;
    overflow-y: auto;
    padding: 24px 8% 0;
    scroll-behavior: smooth;
}

/* Messages */
.ds-message {
    display: flex;
    gap: 24px;
    padding: 24px 0;
    position: relative;
}

.ds-message-user {
    background-color: var(--ds-user-msg-bg);
}

.ds-message-bot {
    background-color: var(--ds-bot-msg-bg);
}

.ds-avatar {
    width: 36px;
    height: 36px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.ds-avatar svg {
    width: 100%;
    height: 100%;
}

.ds-message-content {
    flex: 1;
    padding-top: 4px;
}

.ds-message-text {
    white-space: pre-wrap;
    font-size: 15px;
    line-height: 1.75;
    word-wrap: break-word;
}

.ds-message-text p {
    margin-bottom: 1em;
    color: var(--ds-text-primary);
}

.ds-message-text p:last-child {
    margin-bottom: 0;
}

/* Headers */
.ds-message-text h1 {
    font-size: 1.8em;
    font-weight: 600;
    margin: 1em 0 0.5em;
    color: var(--ds-h1-color);
    border-bottom: 1px solid var(--ds-border);
    padding-bottom: 0.3em;
}

.ds-message-text h2 {
    font-size: 1.5em;
    font-weight: 600;
    margin: 1em 0 0.5em;
    color: var(--ds-h2-color);
    border-bottom: 1px solid var(--ds-border);
    padding-bottom: 0.3em;
}

.ds-message-text h3 {
    font-size: 1.25em;
    font-weight: 600;
    margin: 1em 0 0.5em;
    color: var(--ds-h3-color);
}

/* Text formatting */
.ds-message-text strong {
    font-weight: 600;
    color: var(--ds-text-primary);
}

.ds-message-text em {
    font-style: italic;
    color: var(--ds-text-primary);
}

/* Lists */
.ds-message-text ul,
.ds-message-text ol {
    margin: 0.5em 0 1em 1.5em;
    padding-left: 1em;
}

.ds-message-text li {
    margin-bottom: 0.5em;
    position: relative;
    color: var(--ds-text-primary);
}

.ds-message-text ul li::before {
    content: "•";
    color: var(--ds-list-bullet);
    position: absolute;
    left: -1em;
}

.ds-message-text ol {
    list-style-type: decimal;
}

/* Code Blocks */
.ds-code-block {
    position: relative;
    margin: 1em 0;
    border-radius: 6px;
    overflow: hidden;
    background-color: var(--ds-code-bg);
    font-size: 14px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.ds-code-banner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 16px;
    background-color: var(--ds-code-header-bg);
    color: var(--ds-text-secondary);
    font-family: 'Roboto Mono', monospace;
    font-size: 12px;
    height: 36px;
    user-select: none;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.ds-code-content {
    display: flex;
    position: relative;
    overflow-x: auto;
}

.ds-line-numbers {
    padding: 12px 8px;
    font-family: 'Roboto Mono', monospace;
    color: var(--ds-line-numbers);
    text-align: right;
    user-select: none;
    background-color: var(--ds-code-bg);
    border-right: 1px solid rgba(255, 255, 255, 0.1);
    line-height: 1.5;
    min-width: 40px;
    white-space: pre;
}

.ds-code-block pre {
    margin: 0;
    padding: 12px 0;
    width: 100%;
    overflow: auto;
}

.ds-code-block code {
    font-family: 'Roboto Mono', monospace !important;
    padding: 0 16px 0 0;
    display: block !important;
    white-space: pre !important;
    tab-size: 4;
    line-height: 1.5;
    font-size: 14px;
}

.ds-copy-button {
    color: var(--ds-text-secondary);
    font-size: 12px;
    cursor: pointer;
    padding: 4px 8px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 4px;
    background-color: rgba(255, 255, 255, 0.05);
    transition: all 0.2s ease;
}

.ds-copy-button:hover {
    color: white;
    background-color: rgba(255, 255, 255, 0.1);
}

/* Typing Indicator */
.ds-typing-indicator {
    display: flex;
    align-items: center;
    gap: 4px;
    height: 24px;
}

.ds-typing-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--ds-text-secondary);
    animation: ds-typing-animation 1.4s infinite ease-in-out;
    display: inline-block;
    margin: 0 2px;
}

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

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

@keyframes ds-typing-animation {
    0%, 60%, 100% { transform: translateY(0); }
    30% { transform: translateY(-4px); }
}

/* Input Area */
.ds-input-container {
    padding: 24px 8%;
    max-width: 800px;
    margin: 0 auto;
    width: 100%;
    position: relative;
}

.ds-input-form {
    position: relative;
}

.ds-input-box {
    position: relative;
    border-radius: 8px;
    box-shadow: 0 0 8px rgba(0, 0, 0, 0.2);
    background-color: var(--ds-bot-msg-bg);
    display: flex;
}

.ds-input-box textarea {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--ds-text-primary);
    padding: 12px 16px;
    resize: none;
    outline: none;
    font-family: inherit;
    font-size: 15px;
    line-height: 1.5;
    min-height: 24px;
    max-height: 200px;
    overflow-y: hidden;
}

.ds-send-button {
    background: transparent;
    border: none;
    color: var(--ds-text-secondary);
    padding: 0 12px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color 0.2s;
}

.ds-send-button:hover {
    color: var(--ds-accent);
}

.ds-send-button svg {
    width: 20px;
    height: 20px;
}

.ds-disclaimer {
    text-align: center;
    font-size: 12px;
    color: var(--ds-text-secondary);
    margin-top: 12px;
}

/* Responsive Design */
@media (max-width: 768px) {
    .ds-sidebar {
        width: 100%;
        position: fixed;
        z-index: 100;
        height: auto;
        bottom: 0;
        display: none;
    }
    
    .ds-main {
        padding-bottom: 80px;
    }
    
    .ds-chat-container {
        padding: 16px;
    }
    
    .ds-input-container {
        padding: 16px;
    }
}

/* Animations */
@keyframes ds-fade-in {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.ds-message {
    animation: ds-fade-in 0.3s ease-out;
}

/* Highlight.js overrides */
.hljs {
    background: transparent !important;
    padding: 0 !important;
}

.hljs-comment,
.hljs-quote {
    color: #5c6370;
    font-style: italic;
}

.hljs-doctag,
.hljs-formula,
.hljs-keyword {
    color: #c678dd;
}

.hljs-deletion,
.hljs-name,
.hljs-section,
.hljs-selector-tag,
.hljs-subst {
    color: #e06c75;
}

.hljs-literal {
    color: #56b6c2;
}

.hljs-addition,
.hljs-attribute,
.hljs-meta-string,
.hljs-regexp,
.hljs-string {
    color: #98c379;
}

.hljs-built_in,
.hljs-class .hljs-title {
    color: #e6c07b;
}

.hljs-attr,
.hljs-number,
.hljs-selector-attr,
.hljs-selector-class,
.hljs-selector-pseudo,
.hljs-template-variable,
.hljs-type,
.hljs-variable {
    color: #d19a66;
}

.hljs-bullet,
.hljs-link,
.hljs-meta,
.hljs-selector-id,
.hljs-symbol,
.hljs-title {
    color: #61aeee;
}

/* Scrollbar styling */
.ds-code-content::-webkit-scrollbar {
    height: 8px;
    width: 8px;
}

.ds-code-content::-webkit-scrollbar-thumb {
    background-color: rgba(255,255,255,0.2);
    border-radius: 4px;
}

.ds-code-content::-webkit-scrollbar-track {
    background-color: rgba(0,0,0,0.2);
}

.ds-chat-container::-webkit-scrollbar {
    width: 8px;
}

.ds-chat-container::-webkit-scrollbar-thumb {
    background-color: rgba(255,255,255,0.1);
    border-radius: 4px;
}

.ds-chat-container::-webkit-scrollbar-track {
    background-color: transparent;
}