/* Основные стили */
:root {
    --primary-color: #6366f1;
    --secondary-color: #4f46e5;
    --text-color: #1f2937;
    --text-secondary: #6b7280;
    --bg-color: #ffffff;
    --bg-secondary: #f3f4f6;
    --border-color: #e5e7eb;
    --shadow-color: rgba(0, 0, 0, 0.1);
    --message-user-bg: #f3f4f6;
    --message-ai-bg: #ffffff;
    --code-bg: #282c34;
}

/* Темная тема */
body.dark-mode {
    --primary-color: #818cf8;
    --secondary-color: #6366f1;
    --text-color: #f9fafb;
    --text-secondary: #d1d5db;
    --bg-color: #111827;
    --bg-secondary: #1f2937;
    --border-color: #374151;
    --shadow-color: rgba(0, 0, 0, 0.3);
    --message-user-bg: #1f2937;
    --message-ai-bg: #111827;
    --code-bg: #1a1d23;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    color: var(--text-color);
    background-color: var(--bg-color);
    transition: background-color 0.3s, color 0.3s;
}

.app-container {
    display: flex;
    height: 100vh;
    overflow: hidden;
}

/* Боковая панель */
.sidebar {
    width: 260px;
    background-color: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    padding: 16px;
    transition: background-color 0.3s;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 20px;
    padding: 10px;
}

.logo i {
    font-size: 24px;
    color: var(--primary-color);
}

.logo h1 {
    font-size: 18px;
    font-weight: 600;
}

.new-chat-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 8px;
    padding: 10px 16px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.2s;
    margin-bottom: 20px;
}

.new-chat-btn:hover {
    background-color: var(--secondary-color);
}

.chat-history {
    flex: 1;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.chat-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color 0.2s;
    color: var(--text-secondary);
}

.chat-item:hover {
    background-color: rgba(99, 102, 241, 0.1);
}

.chat-item.active {
    background-color: rgba(99, 102, 241, 0.15);
    color: var(--primary-color);
}

.chat-item i {
    font-size: 14px;
}

.chat-item span {
    font-size: 14px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sidebar-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
    margin-top: 16px;
}

.toggle-mode-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 16px;
    padding: 8px;
    border-radius: 8px;
    transition: background-color 0.2s;
}

.toggle-mode-btn:hover {
    background-color: rgba(99, 102, 241, 0.1);
}

.model-info {
    font-size: 12px;
    color: var(--text-secondary);
}

/* Основной контент */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    height: 100%;
    overflow: hidden;
}

.chat-container {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
    display: flex;
    flex-direction: column;
}

/* Экран приветствия */
.welcome-screen {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    height: 100%;
    padding: 20px;
    max-width: 800px;
    margin: 0 auto;
}

.welcome-logo {
    font-size: 48px;
    color: var(--primary-color);
    margin-bottom: 20px;
    background-color: rgba(99, 102, 241, 0.1);
    width: 100px;
    height: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 20px;
}

.welcome-screen h1 {
    font-size: 28px;
    margin-bottom: 10px;
}

.welcome-screen p {
    font-size: 16px;
    color: var(--text-secondary);
    margin-bottom: 30px;
}

.examples {
    width: 100%;
}

.examples h3 {
    font-size: 16px;
    margin-bottom: 16px;
}

.example-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 16px;
}

.example {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 16px;
    cursor: pointer;
    transition: border-color 0.2s, transform 0.2s;
    display: flex;
    align-items: center;
    gap: 12px;
}

.example:hover {
    border-color: var(--primary-color);
    transform: translateY(-2px);
}

.example i {
    font-size: 18px;
    color: var(--primary-color);
}

.example span {
    font-size: 14px;
}

/* Сообщения */
.messages {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.message {
    display: flex;
    gap: 16px;
    padding: 16px;
    border-radius: 8px;
    animation: fadeIn 0.3s ease-out;
}

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

.message.user {
    background-color: var(--message-user-bg);
    align-self: flex-end;
    max-width: 85%;
}

.message.ai {
    background-color: var(--message-ai-bg);
    border: 1px solid var(--border-color);
    align-self: flex-start;
    max-width: 85%;
}

.message-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background-color: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 16px;
    flex-shrink: 0;
}

.message-avatar.user {
    background-color: var(--text-secondary);
}

.message-content {
    flex: 1;
    overflow-wrap: break-word;
}

.message-sender {
    font-weight: 600;
    margin-bottom: 4px;
}

.message-text {
    line-height: 1.5;
    font-size: 15px;
}

.message-text p {
    margin-bottom: 12px;
}

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

.message-text pre {
    background-color: var(--code-bg);
    border-radius: 6px;
    padding: 12px;
    overflow-x: auto;
    margin: 12px 0;
}

.message-text code {
    font-family: 'Fira Code', monospace;
    font-size: 14px;
}

.message-text code:not(pre code) {
    background-color: rgba(99, 102, 241, 0.1);
    padding: 2px 4px;
    border-radius: 4px;
    font-size: 14px;
}

.message-text ul, .message-text ol {
    margin: 12px 0;
    padding-left: 24px;
}

.message-text li {
    margin-bottom: 6px;
}

.message-text a {
    color: var(--primary-color);
    text-decoration: none;
}

.message-text a:hover {
    text-decoration: underline;
}

/* Контейнер ввода */
.input-container {
    padding: 16px;
    border-top: 1px solid var(--border-color);
    background-color: var(--bg-color);
}

.input-wrapper {
    display: flex;
    gap: 12px;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 8px 16px;
    transition: border-color 0.2s;
}

.input-wrapper:focus-within {
    border-color: var(--primary-color);
}

textarea {
    flex: 1;
    border: none;
    background: none;
    resize: none;
    height: 24px;
    max-height: 200px;
    font-family: inherit;
    font-size: 15px;
    color: var(--text-color);
    outline: none;
    padding: 4px 0;
    line-height: 1.5;
}

textarea::placeholder {
    color: var(--text-secondary);
}

.send-btn {
    background: none;
    border: none;
    color: var(--primary-color);
    cursor: pointer;
    font-size: 16px;
    padding: 8px;
    border-radius: 8px;
    transition: background-color 0.2s;
    align-self: flex-end;
}

.send-btn:hover {
    background-color: rgba(99, 102, 241, 0.1);
}

.send-btn:disabled {
    color: var(--text-secondary);
    cursor: not-allowed;
}

.input-footer {
    display: flex;
    justify-content: center;
    margin-top: 8px;
}

.disclaimer {
    font-size: 12px;
    color: var(--text-secondary);
}

/* Адаптивность */
@media (max-width: 768px) {
    .app-container {
        flex-direction: column;
    }
    
    .sidebar {
        width: 100%;
        height: auto;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
        padding: 12px;
    }
    
    .chat-history {
        display: none;
    }
    
    .logo {
        margin-bottom: 12px;
    }
    
    .new-chat-btn {
        margin-bottom: 0;
    }
    
    .sidebar-footer {
        display: none;
    }
    
    .main-content {
        height: 0;
        flex: 1;
    }
    
    .example-grid {
        grid-template-columns: 1fr;
    }
    
    .message.user, .message.ai {
        max-width: 100%;
    }
}

/* Анимации загрузки */
.typing-indicator {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 12px;
    border-radius: 16px;
    background-color: var(--bg-secondary);
    width: fit-content;
    margin-top: 8px;
}

.typing-dot {
    width: 8px;
    height: 8px;
    background-color: var(--text-secondary);
    border-radius: 50%;
    animation: typingAnimation 1.4s infinite ease-in-out;
}

.typing-dot:nth-child(1) {
    animation-delay: 0s;
}

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

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

@keyframes typingAnimation {
    0%, 60%, 100% {
        transform: translateY(0);
        opacity: 0.6;
    }
    30% {
        transform: translateY(-4px);
        opacity: 1;
    }
}

/* Кнопки действий для сообщений */
.message-actions {
    display: flex;
    gap: 8px;
    margin-top: 8px;
}

.action-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 14px;
    padding: 4px 8px;
    border-radius: 4px;
    transition: background-color 0.2s, color 0.2s;
    display: flex;
    align-items: center;
    gap: 4px;
}

.action-btn:hover {
    background-color: rgba(99, 102, 241, 0.1);
    color: var(--primary-color);
}

/* Стили для кода */
.hljs {
    background: var(--code-bg) !important;
    border-radius: 6px;
}

/* Стили для скроллбара */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

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

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