:root[data-theme="light"] {
    --bg-color: #ffffff;
    --text-color: #333333;
    --chat-bg: #f5f5f5;
    --user-message-bg: #e3f2fd;
    --bot-message-bg: #f5f5f5;
    --border-color: #e0e0e0;
    --hover-color: #f0f0f0;
    --error-color: #ff5252;
}

:root[data-theme="dark"] {
    --bg-color: #1a1a1a;
    --text-color: #ffffff;
    --chat-bg: #2d2d2d;
    --user-message-bg: #2962ff;
    --bot-message-bg: #424242;
    --border-color: #404040;
    --hover-color: #333333;
    --error-color: #ff4444;
}

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

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    height: 100vh;
    display: flex;
    flex-direction: column;
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.logo-link {
    display: inline-flex;
    transition: opacity 0.3s ease;
}

.logo-link:hover {
    opacity: 0.8;
}

.logo {
    height: 32px;
    width: auto;
    object-fit: contain;
}

.settings-toggle {
    display: flex;
    gap: 10px;
}

.settings-toggle button {
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--text-color);
    padding: 8px;
    border-radius: 50%;
    transition: all 0.3s ease;
    position: relative;
}

.settings-toggle button:hover {
    background-color: var(--hover-color);
    transform: scale(1.1);
}

.settings-toggle button:active {
    transform: scale(0.95);
}

/* Settings Panel Styles */
.settings-panel {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 32px;
    z-index: 1000;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.1);
    width: 95%;
    max-width: 700px;
    max-height: 90vh;
    overflow-y: auto;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.setting-item {
    margin-bottom: 24px;
}

.setting-item:last-child {
    margin-bottom: 0;
}

.setting-item label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    font-size: 1.1em;
    color: var(--text-color);
}

.setting-item input[type="password"],
.setting-item input[type="range"],
.setting-item textarea,
.setting-item select {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background-color: var(--bg-color);
    color: var(--text-color);
    font-size: 1em;
    margin-bottom: 8px;
}

.setting-item select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml;charset=US-ASCII,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20width%3D%22292.4%22%20height%3D%22292.4%22%3E%3Cpath%20fill%3D%22%23666666%22%20d%3D%22M287%2069.4a17.6%2017.6%200%200%200-13-5.4H18.4c-5%200-9.3%201.8-12.9%205.4A17.6%2017.6%200%200%200%200%2082.2c0%205%201.8%209.3%205.4%2012.9l128%20127.9c3.6%203.6%207.8%205.4%2012.8%205.4s9.2-1.8%2012.8-5.4L287%2095c3.5-3.5%205.4-7.8%205.4-12.8%200-5-1.9-9.2-5.4-12.8z%22%2F%3E%3C%2Fsvg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    background-size: 12px;
    padding-right: 40px;
}

.setting-item select:hover {
    border-color: var(--text-color);
}

.setting-item select:focus {
    outline: none;
    border-color: var(--text-color);
    box-shadow: 0 0 0 2px rgba(var(--text-color-rgb), 0.1);
}

.setting-item textarea {
    min-height: 120px;
    line-height: 1.5;
    resize: vertical;
}

.settings-panel.hidden {
    display: none;
}

.settings-panel:not(.hidden) {
    opacity: 1;
    visibility: visible;
}

/* Close button for settings panel */
.settings-close {
    position: absolute;
    top: 16px;
    right: 16px;
    background: none;
    border: none;
    font-size: 20px;
    cursor: pointer;
    color: var(--text-color);
    padding: 8px;
    border-radius: 50%;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.settings-close:hover {
    background-color: var(--hover-color);
    transform: scale(1.1);
}

.settings-close:active {
    transform: scale(0.95);
}

/* Settings Panel Header */
.settings-panel h3 {
    margin: 0 0 24px 0;
    font-size: 1.75rem;
    font-weight: 600;
    color: var(--text-color);
}

/* Temperature display */
#temperatureValue {
    display: inline-block;
    margin-left: 8px;
    font-size: 1em;
    color: var(--text-color);
}

/* Overlay background */
.settings-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.settings-overlay:not(.hidden) {
    opacity: 1;
    visibility: visible;
}

/* Active state for settings button */
#settingsBtn.active {
    background-color: var(--hover-color);
    transform: rotate(180deg);
}

#settingsBtn {
    transition: transform 0.3s ease, background-color 0.3s ease;
}

.test-button {
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    color: var(--text-color);
    padding: 8px 16px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.test-button:hover {
    background-color: var(--hover-color);
}

.test-button:active {
    transform: scale(0.98);
}

.test-button.loading {
    opacity: 0.7;
    cursor: not-allowed;
}

.test-button.loading::after {
    content: '';
    width: 14px;
    height: 14px;
    border: 2px solid var(--text-color);
    border-radius: 50%;
    border-top-color: transparent;
    animation: spin 1s linear infinite;
    display: inline-block;
}

.test-button.success {
    background-color: #4caf50;
    color: white;
    border-color: #45a049;
}

.test-button.error {
    background-color: #f44336;
    color: white;
    border-color: #da190b;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.chat-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    background-color: var(--chat-bg);
    border-radius: 10px;
    border: 1px solid var(--border-color);
    overflow: hidden;
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
}

.message {
    max-width: 80%;
    margin-bottom: 15px;
    padding: 12px;
    border-radius: 10px;
    line-height: 1.4;
    white-space: pre-wrap;
}

.user-message {
    background-color: var(--user-message-bg);
    color: var(--text-color);
    margin-left: auto;
}

.bot-message {
    background-color: var(--bot-message-bg);
    color: var(--text-color);
    margin-right: auto;
}

.error-message {
    background-color: var(--error-color);
    color: white;
    margin: 10px auto;
    text-align: center;
}

.chat-input-container {
    display: flex;
    gap: 10px;
    padding: 20px;
    background-color: var(--bg-color);
    border-top: 1px solid var(--border-color);
}

#messageInput {
    flex: 1;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    resize: none;
    background-color: var(--chat-bg);
    color: var(--text-color);
    font-family: inherit;
    line-height: 1.4;
}

#sendButton,
#newChatButton {
    background: none;
    border: none;
    font-size: 20px;
    cursor: pointer;
    color: var(--text-color);
    padding: 8px;
    border-radius: 5px;
    transition: background-color 0.3s;
}

#sendButton:hover,
#newChatButton:hover {
    background-color: var(--hover-color);
}

#sendButton:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Typing indicator */
.typing-indicator {
    display: flex;
    gap: 4px;
    padding: 12px 16px;
}

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

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

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

/* Scrollbar styling */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--chat-bg);
}

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

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

/* Welcome message styles */
.welcome-message {
    text-align: center;
    color: var(--text-color);
    opacity: 0.7;
    padding: 2rem;
    max-width: 600px;
    margin: 2rem auto;
}

.welcome-message h2 {
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.welcome-message p {
    margin-bottom: 1rem;
}

.welcome-message ol {
    text-align: left;
    margin: 0 auto;
    max-width: 400px;
}

.welcome-message li {
    margin-bottom: 0.75rem;
    line-height: 1.4;
}

.welcome-message a {
    color: var(--text-color);
    text-decoration: underline;
    transition: opacity 0.3s ease;
}

.welcome-message a:hover {
    opacity: 0.8;
}

.welcome-message i {
    font-size: 1.1em;
    vertical-align: middle;
}

/* Help panel styles */
.help-content {
    padding: 20px 0;
    line-height: 1.6;
}

.help-content h1 {
    margin-top: 0;
}

.help-content h1, .help-content h2, .help-content h3 {
    color: var(--text-color);
    margin-bottom: 16px;
}

.help-content p, .help-content ul, .help-content ol {
    margin-bottom: 16px;
}

.help-content a {
    color: #2962ff;
    text-decoration: none;
}

.help-content a:hover {
    text-decoration: underline;
}

.help-tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 24px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 8px;
}

.help-tab {
    background: none;
    border: none;
    padding: 8px 16px;
    cursor: pointer;
    color: var(--text-color);
    border-radius: 4px;
    font-size: 14px;
    transition: all 0.2s ease;
}

.help-tab:hover {
    background-color: var(--hover-color);
}

.help-tab.active {
    background-color: var(--hover-color);
    font-weight: 500;
}

/* Add GitHub-style markdown rendering */
.markdown-body {
    color: var(--text-color);
}

.markdown-body ul, .markdown-body ol {
    padding-left: 24px;
}

.markdown-body code {
    background-color: var(--hover-color);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: monospace;
    font-size: 0.9em;
}

.markdown-body blockquote {
    border-left: 4px solid var(--border-color);
    padding-left: 16px;
    margin: 16px 0;
    color: var(--text-color);
}