/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg-primary: #ffffff;
    --bg-secondary: #f7f7f8;
    --bg-tertiary: #ffffff;
    --border-color: #e5e5e5;
    --text-primary: #202123;
    --text-secondary: #666;
    --text-muted: #999;
    --accent: #0969da;
    --accent-hover: #0860ca;
    --success: #1a7f37;
    --error: #cf222e;
    --warning: #9a6700;
    --sidebar-width: 320px;
    --header-height: 60px;
    --border-radius: 12px;
    --transition: all 0.2s ease;
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

/* Dark theme */
[data-theme="dark"] {
    --bg-primary: #0d1117;
    --bg-secondary: #161b22;
    --bg-tertiary: #21262d;
    --border-color: #30363d;
    --text-primary: #f0f6fc;
    --text-secondary: #8b949e;
    --text-muted: #6e7681;
    --accent: #1f6feb;
    --accent-hover: #388bfd;
}

body {
    font-family: var(--font-family);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow: hidden;
}

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

/* Sidebar Styles */
.sidebar {
    width: var(--sidebar-width);
    background-color: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    transition: var(--transition);
}

.sidebar-header {
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 15px;
}

.logo i {
    color: var(--accent);
}

.new-chat-btn {
    width: 100%;
    padding: 12px 16px;
    background-color: var(--accent);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.new-chat-btn:hover {
    background-color: var(--accent-hover);
    transform: translateY(-1px);
}

.sidebar-content {
    flex: 1;
    padding: 20px;
    overflow-y: auto;
}

/* Status Card */
.status-card {
    background-color: var(--bg-tertiary);
    border-radius: var(--border-radius);
    padding: 16px;
    margin-bottom: 20px;
    border: 1px solid var(--border-color);
}

.status-header {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.status-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
    font-size: 14px;
}

.status-label {
    color: var(--text-secondary);
}

.status-value {
    color: var(--text-primary);
    font-weight: 500;
}

.status-value.online {
    color: var(--success);
}

.status-value.error {
    color: var(--error);
}

/* Model Dropdown Styles */
.model-dropdown {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 12px;
    padding: 2px 6px;
    min-width: 120px;
    max-width: 150px;
    cursor: pointer;
    transition: var(--transition);
    outline: none;
}

.model-dropdown:hover {
    border-color: var(--accent);
}

.model-dropdown:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 2px rgba(9, 105, 218, 0.2);
}

.model-switch-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 4px 6px;
    margin-left: 4px;
    border-radius: 4px;
    transition: var(--transition);
    font-size: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 20px;
    height: 20px;
}

.model-switch-btn:hover {
    background: var(--bg-secondary);
    color: var(--accent);
}

.model-switch-btn.loading {
    animation: spin 1s linear infinite;
}

.model-switch-btn.success {
    color: var(--success);
}

.model-switch-btn.error {
    color: var(--error);
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* Adjust status item layout for model dropdown */
.status-item:has(.model-dropdown) {
    flex-wrap: nowrap;
    gap: 4px;
}

.status-item:has(.model-dropdown) .status-label {
    flex-shrink: 0;
}

/* Memory Section */
.memory-section, .recent-memories {
    margin-bottom: 24px;
}

.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.section-header i {
    color: var(--accent);
}

.memory-form {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.memory-form input,
.memory-form textarea,
.memory-form select {
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-size: 14px;
    transition: var(--transition);
}

.memory-form input:focus,
.memory-form textarea:focus,
.memory-form select:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(9, 105, 218, 0.1);
}

.memory-form textarea {
    resize: vertical;
    min-height: 60px;
    font-family: inherit;
}

.store-memory-btn {
    padding: 10px 16px;
    background-color: var(--success);
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
}

.store-memory-btn:hover {
    background-color: #1a7f37dd;
    transform: translateY(-1px);
}

.refresh-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
    transition: var(--transition);
}

.refresh-btn:hover {
    color: var(--accent);
    background-color: var(--bg-primary);
}

.memories-list {
    max-height: 200px;
    overflow-y: auto;
}

.memory-item {
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 12px;
    margin-bottom: 8px;
    font-size: 14px;
}

.memory-key {
    font-weight: 600;
    color: var(--accent);
    margin-bottom: 4px;
}

.memory-value {
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.memory-meta {
    display: flex;
    justify-content: space-between;
    font-size: 12px;
    color: var(--text-muted);
}

/* Main Content */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    background-color: var(--bg-primary);
}

.header {
    height: var(--header-height);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    padding: 0 20px;
    background-color: var(--bg-tertiary);
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.2rem;
    color: var(--text-primary);
    cursor: pointer;
    margin-right: 15px;
}

.header-info h1 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 2px;
}

.header-info p {
    font-size: 14px;
    color: var(--text-secondary);
}

.header-actions {
    margin-left: auto;
    display: flex;
    gap: 10px;
}

.theme-toggle, .settings-btn {
    background: none;
    border: none;
    font-size: 1.1rem;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 8px;
    border-radius: 6px;
    transition: var(--transition);
}

.theme-toggle:hover, .settings-btn:hover {
    color: var(--text-primary);
    background-color: var(--bg-secondary);
}

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

.welcome-message {
    text-align: center;
    max-width: 600px;
    margin: auto;
    padding: 40px 20px;
}

.welcome-icon {
    font-size: 3rem;
    color: var(--accent);
    margin-bottom: 20px;
}

.welcome-message h2 {
    font-size: 2rem;
    margin-bottom: 10px;
    color: var(--text-primary);
}

.welcome-message p {
    color: var(--text-secondary);
    margin-bottom: 40px;
    font-size: 1.1rem;
}

.example-prompts {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 15px;
    margin-top: 30px;
}

.prompt-example {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 16px;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 12px;
    text-align: left;
}

.prompt-example:hover {
    border-color: var(--accent);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.prompt-example i {
    color: var(--accent);
    font-size: 1.1rem;
}

.prompt-example span {
    color: var(--text-primary);
    font-size: 14px;
}

/* Chat Messages */
.message {
    max-width: 800px;
    margin: 0 auto 20px;
    display: flex;
    gap: 16px;
    padding: 20px;
    border-radius: var(--border-radius);
    animation: fadeIn 0.3s ease;
}

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

.message.assistant {
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
}

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

.message.user .message-avatar {
    background-color: var(--accent);
    color: white;
}

.message.assistant .message-avatar {
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
}

.message-content {
    flex: 1;
    line-height: 1.6;
}

.message-role {
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-secondary);
    font-size: 14px;
}

.message-text {
    color: var(--text-primary);
    white-space: pre-wrap;
    word-wrap: break-word;
}

.message-meta {
    margin-top: 8px;
    font-size: 12px;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 10px;
}

.memory-indicator {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 2px 8px;
    background-color: var(--bg-secondary);
    border-radius: 12px;
    font-size: 11px;
}

/* Input Container */
.input-container {
    padding: 20px;
    border-top: 1px solid var(--border-color);
    background-color: var(--bg-tertiary);
}

.input-wrapper {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    display: flex;
    align-items: flex-end;
    transition: var(--transition);
}

.input-wrapper:focus-within {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(9, 105, 218, 0.1);
}

#messageInput {
    flex: 1;
    border: none;
    padding: 14px 16px;
    background: transparent;
    color: var(--text-primary);
    font-size: 15px;
    line-height: 1.5;
    resize: none;
    max-height: 120px;
    font-family: inherit;
}

#messageInput:focus {
    outline: none;
}

/* File Upload Styles */
.input-content {
    display: flex;
    align-items: flex-end;
    flex: 1;
    gap: 8px;
}

.file-upload-btn {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 8px 12px;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
}

.file-upload-btn:hover {
    background: var(--bg-tertiary);
    color: var(--accent);
    border-color: var(--accent);
}

.file-upload-area {
    margin-top: 8px;
    padding: 12px;
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    border: 1px dashed var(--border-color);
}

.file-preview-container {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.file-preview {
    display: flex;
    align-items: center;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 8px 12px;
    max-width: 200px;
    position: relative;
}

.file-preview-image {
    max-width: 80px;
    max-height: 80px;
    border-radius: 6px;
    object-fit: cover;
}

.file-preview-info {
    flex: 1;
    min-width: 0;
    margin-left: 8px;
}

.file-preview-name {
    font-size: 12px;
    color: var(--text-primary);
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.file-preview-size {
    font-size: 11px;
    color: var(--text-secondary);
    margin-top: 2px;
}

.file-preview-remove {
    position: absolute;
    top: 4px;
    right: 4px;
    background: var(--error);
    color: white;
    border: none;
    border-radius: 50%;
    width: 20px;
    height: 20px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
    transition: var(--transition);
}

.file-preview-remove:hover {
    background: #b91c1c;
    transform: scale(1.1);
}

.file-info {
    color: var(--text-secondary);
    font-size: 12px;
    display: flex;
    align-items: center;
    gap: 4px;
}

.input-info {
    max-width: 800px;
    margin: 8px auto 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 12px;
    color: var(--text-secondary);
}

#messageInput::placeholder {
    color: var(--text-muted);
}

.send-btn {
    background-color: var(--accent);
    color: white;
    border: none;
    border-radius: 0 8px 8px 0;
    padding: 14px 16px;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 50px;
}

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

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

.input-info {
    max-width: 800px;
    margin: 8px auto 0;
    display: flex;
    justify-content: space-between;
    font-size: 12px;
    color: var(--text-muted);
}

/* Toast Notifications */
.toast {
    position: fixed;
    top: 20px;
    right: 20px;
    background-color: var(--success);
    color: white;
    padding: 12px 16px;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    transform: translateX(400px);
    transition: transform 0.3s ease;
    z-index: 1000;
}

.toast.show {
    transform: translateX(0);
}

.toast.error {
    background-color: var(--error);
}

.toast.warning {
    background-color: var(--warning);
}

.toast-content {
    display: flex;
    align-items: center;
    gap: 8px;
}

/* Loading Overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 999;
}

.loading-overlay.show {
    display: flex;
}

.loading-spinner {
    background-color: var(--bg-tertiary);
    padding: 20px 30px;
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--text-primary);
    font-size: 16px;
}

.loading-spinner i {
    font-size: 1.2rem;
    color: var(--accent);
}

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

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

.typing-indicator {
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

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

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

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

/* Responsive Design */
@media (max-width: 768px) {
    .sidebar {
        position: fixed;
        left: -100%;
        top: 0;
        height: 100vh;
        z-index: 1000;
        box-shadow: 2px 0 10px rgba(0, 0, 0, 0.1);
    }

    .sidebar.open {
        left: 0;
    }

    .menu-toggle {
        display: block;
    }

    .main-content {
        margin-left: 0;
    }

    .example-prompts {
        grid-template-columns: 1fr;
    }

    .header-info h1 {
        font-size: 1rem;
    }

    .header-info p {
        display: none;
    }

    .welcome-message {
        padding: 20px;
    }

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

@media (max-width: 480px) {
    .input-container {
        padding: 15px;
    }

    .message {
        padding: 15px;
        gap: 12px;
    }

    .sidebar-content {
        padding: 15px;
    }
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 6px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 3px;
}

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

/* Loading States */
.loading {
    text-align: center;
    color: var(--text-muted);
    padding: 20px;
}

.error-message {
    background-color: rgba(207, 34, 46, 0.1);
    border: 1px solid var(--error);
    color: var(--error);
    padding: 12px;
    border-radius: 6px;
    margin: 10px 0;
}

.success-message {
    background-color: rgba(26, 127, 55, 0.1);
    border: 1px solid var(--success);
    color: var(--success);
    padding: 12px;
    border-radius: 6px;
    margin: 10px 0;
}

/* Streaming Styles */
.message.streaming {
    opacity: 0.9;
    border-left: 3px solid var(--accent);
}

.streaming-cursor {
    color: var(--accent);
    font-weight: bold;
    animation: pulse 1s infinite;
    margin-left: 2px;
}

.message-text {
    position: relative;
    word-wrap: break-word;
    white-space: pre-wrap;
}

/* Stream completion animation */
@keyframes streamComplete {
    0% {
        opacity: 0.8;
    }
    50% {
        opacity: 1;
        transform: translateY(-1px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

.message.streaming.completed {
    animation: streamComplete 0.5s ease;
}

/* Enhanced typing indicator */
.typing-message .message-text {
    color: var(--text-muted);
    font-style: italic;
}

/* Error handling for streaming */
.message.stream-error {
    border-left-color: var(--error);
    background-color: rgba(207, 34, 46, 0.05);
}

.stream-error .message-text {
    color: var(--error);
}

/* Loading state for streaming */
.message.stream-loading {
    position: relative;
}

.message.stream-loading::after {
    content: '';
    position: absolute;
    bottom: 10px;
    right: 10px;
    width: 20px;
    height: 2px;
    background: var(--accent);
    animation: streamProgress 2s ease-in-out infinite;
}

@keyframes streamProgress {
    0% {
        width: 0%;
        opacity: 0.7;
    }
    50% {
        width: 20px;
        opacity: 1;
    }
    100% {
        width: 0%;
        opacity: 0.7;
    }
}