styles.css

:root {
    /* Light Theme (Default) */
    --primary: #10a37f;
    --bg-color: #ffffff;
    --text-color: #333333;
    --chat-bg: #f7f7f8;
    --user-msg-bg: #10a37f;
    --user-msg-color: white;
    --ai-msg-bg: white;
    --ai-msg-color: #333333;
    --border-color: #e5e5e5;
    --sidebar-bg: #202123;
    --sidebar-text: white;
    --sidebar-btn-bg: #343541;
    --sidebar-btn-hover: #40414f;
    --code-bg: #f0f0f0;
    --code-color: #333333;
    --input-bg: #ffffff;
    --hover-color: rgba(16, 163, 127, 0.1);
    --shadow-color: rgba(16, 163, 127, 0.2);
}

/* Dark Theme */
[data-theme="dark"] {
    --primary: #10a37f;
    --bg-color: #1e1e2e;
    --text-color: #e0e0e0;
    --chat-bg: #2c2c3a;
    --user-msg-bg: #10a37f;
    --user-msg-color: white;
    --ai-msg-bg: #343541;
    --ai-msg-color: #e0e0e0;
    --border-color: #3e3e4a;
    --sidebar-bg: #18181a;
    --sidebar-text: #e0e0e0;
    --sidebar-btn-bg: #2c2c3a;
    --sidebar-btn-hover: #3e3e4a;
    --code-bg: #2d2d3a;
    --code-color: #e0e0e0;
    --input-bg: #343541;
    --hover-color: rgba(16, 163, 127, 0.2);
    --shadow-color: rgba(16, 163, 127, 0.3);
}

/* Night Blue Theme */
[data-theme="night-blue"] {
    --primary: #61afef;
    --bg-color: #1a1b26;
    --text-color: #a9b1d6;
    --chat-bg: #24283b;
    --user-msg-bg: #61afef;
    --user-msg-color: #1a1b26;
    --ai-msg-bg: #2a2e42;
    --ai-msg-color: #a9b1d6;
    --border-color: #343a52;
    --sidebar-bg: #16161e;
    --sidebar-text: #a9b1d6;
    --sidebar-btn-bg: #24283b;
    --sidebar-btn-hover: #2a2e42;
    --code-bg: #282c40;
    --code-color: #a9b1d6;
    --input-bg: #2a2e42;
    --hover-color: rgba(97, 175, 239, 0.2);
    --shadow-color: rgba(97, 175, 239, 0.3);
}

/* Sepia Theme */
[data-theme="sepia"] {
    --primary: #8c6c4e;
    --bg-color: #f0e7da;
    --text-color: #5c4b3c;
    --chat-bg: #f8f0e3;
    --user-msg-bg: #8c6c4e;
    --user-msg-color: #f8f0e3;
    --ai-msg-bg: #e8dccb;
    --ai-msg-color: #5c4b3c;
    --border-color: #d2c2ad;
    --sidebar-bg: #e0d0b8;
    --sidebar-text: #5c4b3c;
    --sidebar-btn-bg: #d0bea6;
    --sidebar-btn-hover: #c0af98;
    --code-bg: #e0d0b8;
    --code-color: #5c4b3c;
    --input-bg: #e8dccb;
    --hover-color: rgba(140, 108, 78, 0.1);
    --shadow-color: rgba(140, 108, 78, 0.2);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    margin: 0;
    padding: 0;
    display: flex;
    height: 100vh;
    background-color: var(--bg-color);
    color: var(--text-color);
    transition: background-color 0.3s ease, color 0.3s ease;
}

.app-container {
    display: flex;
    width: 100%;
    height: 100%;
}

.sidebar {
    width: 260px;
    background-color: var(--sidebar-bg);
    color: var(--sidebar-text);
    padding: 16px;
    display: flex;
    flex-direction: column;
    transition: background-color 0.3s ease;
}

.sidebar button.new-chat {
    background-color: var(--sidebar-btn-bg);
    color: var(--sidebar-text);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 4px;
    padding: 12px;
    text-align: left;
    margin-bottom: 20px;
    cursor: pointer;
    display: flex;
    align-items: center;
    font-size: 14px;
    transition: background-color 0.2s ease;
}

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

.sidebar button.new-chat svg {
    margin-right: 8px;
}

.history-container {
    flex-grow: 1;
    overflow-y: auto;
}

.chat-history-item {
    padding: 10px;
    margin-bottom: 5px;
    border-radius: 4px;
    cursor: pointer;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-size: 14px;
    transition: background-color 0.2s ease;
}

.chat-history-item:hover {
    background-color: var(--sidebar-btn-hover);
}

.sidebar-footer {
    margin-top: auto;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    padding-top: 12px;
    font-size: 12px;
}

.clear-storage-btn {
    background-color: rgba(220, 53, 69, 0.8);
    color: white;
    border: none;
    border-radius: 4px;
    padding: 8px 12px;
    margin-top: 10px;
    cursor: pointer;
    font-size: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    transition: background-color 0.2s ease;
}

.clear-storage-btn:hover {
    background-color: rgba(220, 53, 69, 1);
}

.clear-storage-btn svg {
    margin-right: 8px;
}

.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s, visibility 0.3s;
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    background-color: var(--bg-color);
    color: var(--text-color);
    border-radius: 8px;
    padding: 24px;
    width: 400px;
    max-width: 90%;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.modal-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 16px;
}

.modal-content {
    margin-bottom: 20px;
}

.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
}

.modal-btn {
    padding: 8px 16px;
    border-radius: 4px;
    border: none;
    cursor: pointer;
    font-size: 14px;
}

.modal-btn-cancel {
    background-color: transparent;
    color: var(--text-color);
    border: 1px solid var(--border-color);
}

.modal-btn-cancel:hover {
    background-color: var(--hover-color);
}

.modal-btn-confirm {
    background-color: rgba(220, 53, 69, 0.8);
    color: white;
}

.modal-btn-confirm:hover {
    background-color: rgba(220, 53, 69, 1);
}

/* Theme Switcher */
.theme-switcher {
    margin-bottom: 12px;
    display: flex;
    flex-direction: column;
}

.theme-switcher select {
    background-color: var(--sidebar-btn-bg);
    color: var(--sidebar-text);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 4px;
    padding: 8px;
    margin-top: 5px;
    cursor: pointer;
    font-size: 14px;
}

.theme-switcher select:focus {
    outline: none;
    border-color: var(--primary);
}

.main {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    height: 100vh;
}

.chat-container {
    flex-grow: 1;
    overflow-y: auto;
    padding: 0;
    display: flex;
    flex-direction: column;
    background-color: var(--chat-bg);
    transition: background-color 0.3s ease;
}

.welcome-screen {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    text-align: center;
    padding: 20px;
}

.welcome-screen h1 {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.welcome-screen p {
    color: var(--text-color);
    opacity: 0.8;
    max-width: 600px;
}

.message {
    padding: 20px;
    margin: 0;
    display: flex;
    border-bottom: 1px solid var(--border-color);
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

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

.ai-message {
    background-color: var(--chat-bg);
}

.avatar {
    width: 30px;
    height: 30px;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 15px;
    flex-shrink: 0;
}

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

.ai-avatar {
    background-color: var(--primary);
    color: white;
}

.message-content {
    flex-grow: 1;
    max-width: 800px;
    line-height: 1.6;
}

pre {
    background-color: var(--code-bg);
    color: var(--code-color);
    padding: 10px;
    border-radius: 4px;
    overflow-x: auto;
    transition: background-color 0.3s ease, color 0.3s ease;
    position: relative;
}

code {
    font-family: 'Menlo', 'Monaco', 'Courier New', monospace;
    font-size: 0.9em;
}

.input-area {
    border-top: 1px solid var(--border-color);
    padding: 20px;
    display: flex;
    background-color: var(--bg-color);
    position: relative;
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

.input-container {
    display: flex;
    width: 100%;
    max-width: 800px;
    margin: 0 auto;
    position: relative;
}

textarea {
    width: 100%;
    padding: 12px 45px 12px 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    resize: none;
    min-height: 24px;
    max-height: 200px;
    overflow-y: auto;
    font-family: inherit;
    font-size: 16px;
    line-height: 1.4;
    background-color: var(--input-bg);
    color: var(--text-color);
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 2px var(--shadow-color);
}

.send-button {
    position: absolute;
    right: 8px;
    bottom: 8px;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--primary);
    padding: 5px;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.2s ease;
}

.send-button:disabled {
    color: #ccc;
    cursor: not-allowed;
}

.send-button:hover:not(:disabled) {
    background-color: var(--hover-color);
}

/* Markdown styles */
.markdown ul, .markdown ol {
    padding-left: 20px;
}

.markdown p {
    margin: 10px 0;
}

.typing-indicator {
    display: flex;
    align-items: center;
    margin-top: 5px;
    font-style: italic;
    color: var(--text-color);
    opacity: 0.7;
}

.typing-dot {
    height: 5px;
    width: 5px;
    border-radius: 50%;
    background-color: var(--text-color);
    margin: 0 2px;
    animation: typing-dot 1.4s infinite ease-in-out both;
}

.typing-dot:nth-child(1) {
    animation-delay: -0.32s;
}

.typing-dot:nth-child(2) {
    animation-delay: -0.16s;
}

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

/* Styles for reasoning and answer panels */
.reasoning-panel {
    background-color: var(--ai-msg-bg);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    margin-bottom: 10px;
}

.reasoning-header {
    padding: 8px;
    background-color: var(--sidebar-btn-bg);
    color: var(--sidebar-text);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.toggle-icon {
    font-weight: bold;
}

.reasoning-content {
    padding: 10px;
}

.answer-panel {
    padding: 10px;
}

.answer-content {
    margin-top: 5px;
}

/* Styles for code copy buttons */
.code-window-header {
    display: flex;
    justify-content: flex-end;
    padding: 5px;
    background-color: var(--sidebar-btn-bg);
    border-top-left-radius: 4px;
    border-top-right-radius: 4px;
}

.copy-btn-header {
    background: none;
    border: none;
    color: var(--sidebar-text);
    cursor: pointer;
    padding: 2px 5px;
    font-size: 14px;
}

.copy-btn-header:hover {
    color: var(--primary);
}

/* Responsive design */
@media (max-width: 768px) {
    .app-container {
        flex-direction: column;
    }

    .sidebar {
        width: 100%;
        height: auto;
        padding: 10px;
    }

    .main {
        height: calc(100vh - 60px);
    }
}


/* Ваш существующий код до этого места */

/* Новый код в конце */
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    margin: 0;
    padding: 0;
    display: flex;
    min-height: 100dvh;
    background-color: var(--bg-color);
    color: var(--text-color);
    transition: background-color 0.3s ease, color 0.3s ease;
    overflow: hidden;
}

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

.sidebar {
    width: 260px;
    background-color: var(--sidebar-bg);
    color: var(--sidebar-text);
    padding: 16px;
    display: flex;
    flex-direction: column;
    min-height: 0;
    transition: background-color 0.3s ease;
}

.main {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    min-height: 0;
}

.chat-container {
    flex-grow: 1;
    overflow-y: auto;
    padding: 0;
    display: flex;
    flex-direction: column;
    background-color: var(--chat-bg);
    transition: background-color 0.3s ease;
}

.input-area {
    border-top: 1px solid var(--border-color);
    padding: 20px;
    display: flex;
    background-color: var(--bg-color);
    position: relative;
    flex-shrink: 0;
    min-height: 70px;
    box-sizing: border-box;
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

.input-container {
    display: flex;
    width: 100%;
    max-width: 800px;
    margin: 0 auto;
    position: relative;
}

textarea {
    width: 100%;
    padding: 12px 70px 12px 12px; 
    border: 1px solid var(--border-color);
    border-radius: 6px;
    resize: none;
    min-height: 24px;
    max-height: 200px;
    overflow-y: auto;
    font-family: inherit;
    font-size: 16px;
    line-height: 1.4;
    background-color: var(--input-bg);
    color: var(--text-color);
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
    box-sizing: border-box;
}

/* Enhanced Markdown styles */
.markdown blockquote {
    border-left: 4px solid var(--border-color);
    padding-left: 10px;
    margin: 10px 0;
    color: var(--text-color);
    opacity: 0.8;
}
.markdown table {
    border-collapse: collapse;
    width: 100%;
    margin: 10px 0;
}
.markdown th, .markdown td {
    border: 1px solid var(--border-color);
    padding: 8px;
}
pre {
    background-color: var(--code-bg);
    color: var(--code-color);
    padding: 10px;
    border-radius: 4px;
    overflow-x: auto;
    transition: background-color 0.3s ease, color 0.3s ease;
    position: relative;
    word-break: break-word;
}

/* Responsive design adjustments */
@media (max-width: 768px) {
    .app-container {
        flex-direction: column;
    }

    .sidebar {
        width: 100%;
        height: auto;
        padding: 10px;
    }

    .main {
        height: auto;
    }

    .chat-container {
        height: auto;
        min-height: 0;
    }

    .input-area {
        padding: 10px;
        min-height: 60px;
    }

    .reasoning-panel, .answer-panel {
        padding: 8px;
    }
    .reasoning-header {
        font-size: 14px;
    }
}

.attach-button {
    position: absolute;
    right: 50px;  /* Позиционируем слева от кнопки отправки, подвинув правее */
    bottom: 8px;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--primary);
    padding: 5px;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.2s ease;
}

.attach-button:hover {
    background-color: var(--hover-color);
}
.image-preview {
    display: flex;
    align-items: center;
    margin-top: 10px;
    width: 15%;
    overflow-x: auto;
}
.image-preview img {
    max-height: 25px;
    margin-right: 10px;
    border-radius: 3px;
    border: 1px solid var(--border-color);
}
.image-preview .remove-btn {
    cursor: pointer;
    color: red;
    margin-left: 5px;
    font-size: 14px;
}