/* Base styles */
:root {
    --primary-color: #2563eb;
    --primary-light: #3b82f6;
    --primary-dark: #1d4ed8;
    --secondary-color: #10b981;
    --background-color: #f3f4f6;
    --sidebar-color: #ffffff;
    --text-color: #1f2937;
    --text-light: #6b7280;
    --border-color: #e5e7eb;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --border-radius: 8px;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Helvetica Neue', sans-serif;
    color: var(--text-color);
    background-color: var(--background-color);
    line-height: 1.5;
}

.hidden {
    display: none !important;
}

/* App container layout */
.app-container {
    display: grid;
    grid-template-columns: 260px 1fr;
    height: 100vh;
    overflow: hidden;
}

/* Sidebar styles */
.sidebar {
    background-color: var(--sidebar-color);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    overflow-y: auto;
}

.logo-container {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.logo-container h1 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.beta {
    background-color: rgba(37, 99, 235, 0.1);
    color: var(--primary-color);
    font-size: 0.7rem;
    padding: 0.1rem 0.4rem;
    border-radius: 4px;
    vertical-align: super;
    font-weight: 600;
}

.upload-container {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.upload-box {
    border: 2px dashed var(--border-color);
    border-radius: var(--border-radius);
    padding: 2rem 1rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s ease;
}

.upload-box:hover {
    border-color: var(--primary-light);
    background-color: rgba(59, 130, 246, 0.05);
}

.upload-box .upload-icon {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.upload-box p {
    color: var(--text-light);
    font-weight: 500;
}

.model-selection {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.model-selection label {
    font-weight: 500;
    color: var(--text-light);
}

.model-selection select {
    padding: 0.75rem;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    background-color: white;
    width: 100%;
    font-size: 0.9rem;
    outline: none;
}

.session-info {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

.file-info {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    overflow: hidden;
}

.file-info i {
    color: var(--primary-color);
}

.file-info span {
    font-size: 0.9rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.btn-clear, .btn-new, .btn-remove {
    padding: 0.75rem;
    border-radius: var(--border-radius);
    border: none;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    width: 100%;
}

.btn-clear {
    background-color: rgba(239, 68, 68, 0.1);
    color: #ef4444;
}

.btn-clear:hover {
    background-color: rgba(239, 68, 68, 0.2);
}

.btn-remove {
    background-color: rgba(255, 152, 0, 0.1);
    color: #ff9800;
}

.btn-remove:hover {
    background-color: rgba(255, 152, 0, 0.2);
}

.btn-new {
    background-color: rgba(37, 99, 235, 0.1);
    color: var(--primary-color);
}

.btn-new:hover {
    background-color: rgba(37, 99, 235, 0.2);
}

/* Main content area */
.main-content {
    display: flex;
    flex-direction: column;
    height: 100%;
    overflow: hidden;
}

.welcome-screen {
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 2rem;
    text-align: center;
}

.welcome-header {
    margin-bottom: 3rem;
}

.welcome-header h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.welcome-header p {
    color: var(--text-light);
    font-size: 1.2rem;
}

.features {
    display: flex;
    gap: 2rem;
    margin-bottom: 3rem;
}

.feature {
    background: white;
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--shadow);
    width: 250px;
    transition: transform 0.3s ease;
}

.feature:hover {
    transform: translateY(-5px);
}

.feature i {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.feature h3 {
    margin-bottom: 0.5rem;
}

.feature p {
    color: var(--text-light);
    font-size: 0.9rem;
}

.get-started {
    margin-top: 2rem;
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
    padding: 1rem 2rem;
    border-radius: var(--border-radius);
    border: none;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.2s;
    font-size: 1rem;
}

.btn-primary:hover {
    background-color: var(--primary-dark);
}

/* Chat container */
.chat-container {
    display: flex;
    flex-direction: column;
    height: 100%;
    overflow: hidden;
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.system-message {
    background-color: rgba(37, 99, 235, 0.05);
    padding: 1rem;
    border-radius: var(--border-radius);
    border-left: 4px solid var(--primary-color);
}

.system-message p {
    color: var(--text-color);
    font-size: 0.9rem;
}

.message {
    display: flex;
    flex-direction: column;
    max-width: 85%;
}

.user-message {
    align-self: flex-end;
    background-color: var(--primary-color);
    color: white;
    padding: 1rem;
    border-radius: var(--border-radius);
    border-bottom-right-radius: 0;
}

.assistant-message {
    align-self: flex-start;
    background-color: white;
    padding: 1rem;
    border-radius: var(--border-radius);
    border-bottom-left-radius: 0;
    box-shadow: var(--shadow);
}

.message-timestamp {
    font-size: 0.75rem;
    color: var(--text-light);
    margin-top: 0.25rem;
}

.user-message .message-timestamp {
    align-self: flex-end;
}

.assistant-message .message-timestamp {
    align-self: flex-start;
}

.chat-input-container {
    padding: 1rem;
    border-top: 1px solid var(--border-color);
    background-color: white;
}

.search-toggle {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
    padding-left: 0.5rem;
}

.search-toggle label {
    font-size: 0.9rem;
    color: var(--text-light);
    cursor: pointer;
}

.chat-input-box {
    display: flex;
    gap: 0.75rem;
    align-items: flex-end;
}

#chat-input {
    flex: 1;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 0.75rem;
    resize: none;
    min-height: 60px;
    max-height: 120px;
    outline: none;
    font-family: inherit;
    font-size: 0.95rem;
    line-height: 1.5;
}

#chat-input:focus {
    border-color: var(--primary-light);
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.3);
}

#send-button {
    padding: 0.75rem 1rem;
    border-radius: var(--border-radius);
    border: none;
    background-color: var(--primary-color);
    color: white;
    cursor: pointer;
    transition: background-color 0.2s;
}

#send-button:disabled {
    background-color: #d1d5db;
    cursor: not-allowed;
}

#send-button:not(:disabled):hover {
    background-color: var(--primary-dark);
}

/* Context sidebar */
.context-sidebar {
    background-color: white;
    border-left: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transition: transform 0.3s ease;
}

.context-sidebar.collapsed {
    transform: translateX(290px);
}

.context-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.context-header h3 {
    font-size: 1rem;
    font-weight: 600;
}

.btn-toggle {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-light);
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: background-color 0.2s;
}

.btn-toggle:hover {
    background-color: var(--border-color);
}

.context-content {
    padding: 1rem;
    overflow-y: auto;
    flex: 1;
}

.context-item {
    margin-bottom: 1.5rem;
    background-color: #f9fafb;
    border-radius: var(--border-radius);
    padding: 1rem;
    border-left: 3px solid var(--primary-light);
}

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

.context-score {
    display: block;
    font-size: 0.8rem;
    color: var(--text-light);
    margin-bottom: 0.5rem;
}

.context-text {
    font-size: 0.9rem;
    line-height: 1.5;
    max-height: 200px;
    overflow-y: auto;
}

.no-context {
    color: var(--text-light);
    font-style: italic;
    text-align: center;
    padding: 2rem 0;
}

/* Loading overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.7);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.spinner {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    border: 5px solid rgba(255, 255, 255, 0.3);
    border-top-color: var(--primary-color);
    animation: spin 1s linear infinite;
}

#loading-text {
    margin-top: 1rem;
    color: white;
    font-weight: 500;
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}

/* Message styling with Markdown support */
.message-content {
    width: 100%;
    word-break: break-word;
}

.message-content pre {
    background: #f4f5f7;
    border-radius: 5px;
    padding: 0.75rem;
    overflow-x: auto;
    margin: 0.5rem 0;
}

.message-content code {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.9rem;
    padding: 0.2rem 0.4rem;
    background: #f1f1f1;
    border-radius: 3px;
}

.message-content pre code {
    background: transparent;
    padding: 0;
    white-space: pre;
    color: #333;
    line-height: 1.5;
}

.message-content p {
    margin-bottom: 0.75rem;
}

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

.message-content ul, .message-content ol {
    margin-left: 1.5rem;
    margin-bottom: 0.75rem;
}

.message-content h1, .message-content h2, .message-content h3,
.message-content h4, .message-content h5, .message-content h6 {
    margin-top: 1rem;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.message-content blockquote {
    border-left: 4px solid #ddd;
    padding-left: 1rem;
    margin-left: 0.5rem;
    color: #555;
}

.message-content a {
    color: var(--primary-color);
    text-decoration: underline;
}

.message-content table {
    border-collapse: collapse;
    width: 100%;
    margin: 0.5rem 0;
}

.message-content table th,
.message-content table td {
    border: 1px solid #ddd;
    padding: 0.5rem;
    text-align: left;
}

.message-content table th {
    background-color: #f7f7f7;
}

/* Improved Responsive design */
@media (max-width: 1024px) {
    .app-container {
        grid-template-columns: 260px 1fr 0;
    }
    
    .context-sidebar {
        position: fixed;
        top: 0;
        right: 0;
        width: 300px;
        height: 100vh;
        z-index: 100;
        transform: translateX(100%);
    }
    
    .context-sidebar:not(.collapsed) {
        transform: translateX(0);
    }
    
    .message {
        max-width: 90%;
    }
}

@media (max-width: 768px) {
    .app-container {
        grid-template-columns: 1fr;
    }
    
    .sidebar {
        position: fixed;
        left: 0;
        top: 0;
        height: 100vh;
        width: 260px;
        z-index: 100;
        transform: translateX(-100%);
    }
    
    .sidebar.show {
        transform: translateX(0);
    }
    
    .menu-toggle {
        display: flex;
        position: fixed;
        top: 1rem;
        left: 1rem;
        z-index: 101;
    }
    
    .main-content {
        padding-top: 60px; /* Add spacing for the menu button */
    }
    
    .features {
        flex-direction: column;
        gap: 1rem;
    }
    
    .feature {
        width: 100%;
    }
    
    .message {
        max-width: 95%;
    }
    
    .welcome-header h1 {
        font-size: 2rem;
    }
    
    .welcome-header p {
        font-size: 1rem;
    }
    
    .chat-messages {
        padding: 1rem;
    }
    
    .chat-input-box {
        flex-direction: column;
    }
    
    #send-button {
        align-self: flex-end;
    }
}

@media (max-width: 480px) {
    .message {
        max-width: 100%;
    }
    
    .user-message, .assistant-message {
        padding: 0.75rem;
    }
    
    .welcome-header h1 {
        font-size: 1.5rem;
    }
    
    .features {
        padding: 0 0.5rem;
    }
    
    .feature {
        padding: 1.5rem 1rem;
    }
}