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

body {
    font-family: 'Inter', sans-serif;
    background-color: #FFFFFF;
    color: #212121;
    height: 100%;
    overflow-x: hidden;
    overflow-y: auto;
    position: fixed;
    width: 100%;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
}

/* App Container */
.app-container {
    display: flex;
    height: 100%;
    width: 100%;
    position: relative;
    overflow: hidden;
}

/* Side Navigation Bar */
.side-nav {
    width: 280px;
    height: 100%;
    background-color: #FFFFFF;
    border-right: 1px solid #EEEEEE;
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 0;
    left: -280px; /* Hidden by default */
    transition: left 0.3s ease;
    z-index: 1000;
    box-shadow: 2px 0 10px rgba(0, 0, 0, 0.1);
}

.side-nav.active {
    left: 0;
}

.side-nav-header {
    display: flex;
    align-items: center;
    padding: 16px;
    border-bottom: 1px solid #EEEEEE;
    position: relative;
}

.side-nav-header .logo {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background-color: #E3F2FD;
    border-radius: 50%;
    margin-right: 12px;
    color: #2196F3;
}

.side-nav-header h1 {
    font-size: 20px;
    font-weight: 600;
    color: #424242;
    margin: 0;
}

.close-button {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    background-color: transparent;
    color: #9E9E9E;
    border: none;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s ease;
}

.close-button:hover {
    background-color: #F5F5F5;
    color: #757575;
}

.side-nav-section {
    flex: 1;
    overflow-y: auto;
    padding: 16px 0;
    border-bottom: 1px solid #EEEEEE;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 16px 12px;
}

.section-header h3 {
    font-size: 16px;
    font-weight: 600;
    color: #424242;
    margin: 0;
}

.action-button-small {
    background-color: transparent;
    color: #2196F3;
    border: 1px solid #2196F3;
    border-radius: 4px;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s ease;
}

.action-button-small:hover {
    background-color: #E3F2FD;
}

.history-list {
    max-height: 100%;
    overflow-y: auto;
}

.chat-history-item {
    padding: 12px 16px;
    cursor: pointer;
    display: flex;
    align-items: center;
    transition: background-color 0.2s ease;
    border-radius: 8px;
    margin: 0 8px 8px;
}

.chat-history-item:hover {
    background-color: #F5F5F5;
}

.chat-history-item .icon {
    margin-right: 12px;
    color: #757575;
}

.chat-history-item .details {
    flex: 1;
}

.chat-history-item .timestamp {
    font-size: 12px;
    color: #9E9E9E;
    margin-top: 4px;
}

.empty-state {
    padding: 24px 16px;
    text-align: center;
    color: #9E9E9E;
    font-size: 14px;
}

.side-nav-footer {
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.nav-button {
    display: flex;
    align-items: center;
    padding: 10px 16px;
    background-color: transparent;
    color: #616161;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 14px;
    text-align: left;
}

.nav-button i {
    margin-right: 12px;
    font-size: 16px;
}

.nav-button:hover {
    background-color: #F5F5F5;
}

.nav-button#clearButtonNav:hover {
    color: #F44336;
}

/* Main Content */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    width: 100%;
    position: relative;
    left: 0;
    transition: left 0.3s ease;
}

.main-content.nav-open {
    left: 280px;
}

/* Top Bar */
.top-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    background-color: #2196F3;
    color: white;
    height: 60px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    z-index: 10;
}

.top-bar-left {
    display: flex;
    align-items: center;
}

.menu-button {
    background-color: transparent;
    color: white;
    border: none;
    width: 42px;
    height: 42px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    margin-right: 16px;
    font-size: 24px;
    transition: background-color 0.2s ease;
}

.menu-button:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

.top-bar h1 {
    font-size: 20px;
    font-weight: 500;
    margin: 0;
    color: white;
}

.top-bar-right {
    display: flex;
    align-items: center;
}

.icon-button {
    background-color: transparent;
    color: white;
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background-color 0.2s ease;
}

.icon-button:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

/* Welcome Container with Suggestion Bubbles */
.welcome-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    padding: 24px;
    text-align: center;
}

.welcome-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 64px;
    background-color: #E3F2FD;
    border-radius: 50%;
    margin-bottom: 24px;
    color: #2196F3;
}

.welcome-logo i {
    font-size: 32px;
}

.welcome-header h2 {
    font-size: 28px;
    font-weight: 600;
    color: #212121;
    margin-bottom: 12px;
}

.welcome-subtitle {
    font-size: 16px;
    color: #757575;
    margin-bottom: 32px;
}

.suggestion-bubbles {
    display: flex;
    flex-direction: column;
    gap: 16px;
    max-width: 500px;
    width: 100%;
}

.suggestion-bubble {
    display: flex;
    align-items: center;
    padding: 16px;
    background-color: #F5F5F5;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: left;
}

.suggestion-bubble i {
    font-size: 20px;
    color: #2196F3;
    margin-right: 16px;
}

.suggestion-bubble span {
    font-size: 15px;
    color: #424242;
}

.suggestion-bubble:hover {
    background-color: #E3F2FD;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.05);
}

/* Chat Container */
.chat-container {
    display: flex;
    flex-direction: column;
    flex: 1;
    overflow: hidden;
    background-color: #FAFAFA;
    height: calc(100% - 60px); /* 60px is the height of top-bar */
}

/* Chat Window */
.chat-window {
    flex: 1;
    overflow-y: auto;
    padding: 16px;
    scrollbar-width: thin;
    scrollbar-color: #E0E0E0 #FAFAFA;
    -webkit-overflow-scrolling: touch; /* Smooth scrolling on iOS devices */
}

.chat-window::-webkit-scrollbar {
    width: 6px;
}

.chat-window::-webkit-scrollbar-track {
    background: #FAFAFA;
}

.chat-window::-webkit-scrollbar-thumb {
    background-color: #E0E0E0;
    border-radius: 10px;
}

/* Input Area */
.input-area {
    border-top: 1px solid #EEEEEE;
    background-color: #FFFFFF;
}

/* Image Preview Area */
.image-preview-area {
    padding: 8px 16px;
    background-color: #F8F9FA;
    border-bottom: 1px solid #EEEEEE;
    max-height: 130px;
    overflow-y: auto;
}

.image-preview-area.hidden {
    display: none;
}

.image-preview-list {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    padding: 5px 0;
}

.image-preview-container {
    position: relative;
    display: inline-block;
    width: 100px;
    height: 100px;
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid #EEEEEE;
}

.image-preview-container img {
    width: 100%;
    height: 100%;
    display: block;
    object-fit: cover;
}

.remove-image-button {
    position: absolute;
    top: 4px;
    right: 4px;
    background-color: rgba(0, 0, 0, 0.5);
    color: white;
    border: none;
    border-radius: 50%;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background-color 0.2s ease;
}

.remove-image-button:hover {
    background-color: rgba(0, 0, 0, 0.7);
}

/* Message Containers */
.message-container {
    display: flex;
    margin: 12px 0;
}

.message-container.user {
    justify-content: flex-end;
}

.message-container.bot {
    justify-content: flex-start;
}

/* Message Bubbles */
.message-bubble {
    max-width: 80%;
    padding: 14px 18px;
    border-radius: 18px;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
    word-wrap: break-word;
}

.message-container.user .message-bubble {
    background-color: #E3F2FD;
    border-top-right-radius: 4px;
}

.message-container.bot .message-bubble {
    background-color: #FFFFFF;
    border-top-left-radius: 4px;
    border: 1px solid #EEEEEE;
}

/* Message Text and Images */
.message-bubble p {
    margin: 0;
    line-height: 1.5;
    font-size: 15px;
}

.message-bubble .image-container {
    margin-bottom: 8px;
}

.message-bubble .chat-image {
    max-width: 100%;
    border-radius: 8px;
    margin-bottom: 8px;
    max-height: 300px;
    object-fit: contain;
}

/* Markdown Styling */
.message-bubble ul, 
.message-bubble ol {
    margin-left: 20px;
    margin-top: 8px;
    margin-bottom: 8px;
}

.message-bubble li {
    margin-bottom: 4px;
}

.message-bubble h1, 
.message-bubble h2, 
.message-bubble h3, 
.message-bubble h4 {
    margin-top: 16px;
    margin-bottom: 8px;
    font-weight: 600;
}

.message-bubble code {
    background-color: #F5F5F5;
    padding: 2px 4px;
    border-radius: 4px;
    font-family: 'Courier New', monospace;
    font-size: 14px;
    color: #E91E63;
}

.message-bubble pre {
    background-color: #F5F5F5;
    padding: 12px;
    border-radius: 8px;
    overflow-x: auto;
    margin: 8px 0;
    border: 1px solid #EEEEEE;
}

.message-bubble pre code {
    background-color: transparent;
    padding: 0;
    color: inherit;
    display: block;
}

.message-bubble a {
    color: #2196F3;
    text-decoration: none;
}

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

.message-bubble table {
    border-collapse: collapse;
    width: 100%;
    margin: 8px 0;
}

.message-bubble th, 
.message-bubble td {
    border: 1px solid #EEEEEE;
    padding: 8px;
    text-align: left;
}

.message-bubble th {
    background-color: #F5F5F5;
}

/* Error Message */
.message-container.error .message-bubble {
    background-color: #FFEBEE;
}

.retry-button {
    display: inline-block;
    margin-top: 8px;
    padding: 6px 12px;
    background-color: #F44336;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
}

.retry-button:hover {
    background-color: #D32F2F;
}

/* Loading Animation */
.loading {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 60px;
}

.dot-typing {
    position: relative;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background-color: #9E9E9E;
    color: #9E9E9E;
    animation: dotTyping 1.5s infinite linear;
}

.dot-typing::before,
.dot-typing::after {
    content: '';
    display: inline-block;
    position: absolute;
    top: 0;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background-color: #9E9E9E;
    color: #9E9E9E;
}

.dot-typing::before {
    left: -12px;
    animation: dotTypingBefore 1.5s infinite linear;
}

.dot-typing::after {
    left: 12px;
    animation: dotTypingAfter 1.5s infinite linear;
}

@keyframes dotTyping {
    0% { transform: scale(1); opacity: 0.6; }
    25% { transform: scale(1.3); opacity: 1; }
    50% { transform: scale(1); opacity: 0.6; }
    100% { transform: scale(1); opacity: 0.6; }
}

@keyframes dotTypingBefore {
    0% { transform: scale(1); opacity: 0.6; }
    25% { transform: scale(1); opacity: 0.6; }
    50% { transform: scale(1.3); opacity: 1; }
    100% { transform: scale(1); opacity: 0.6; }
}

@keyframes dotTypingAfter {
    0% { transform: scale(1); opacity: 0.6; }
    25% { transform: scale(1); opacity: 0.6; }
    50% { transform: scale(1); opacity: 0.6; }
    75% { transform: scale(1.3); opacity: 1; }
    100% { transform: scale(1); opacity: 0.6; }
}

/* Input Bar */
.input-bar {
    padding: 16px;
    display: flex;
    align-items: flex-end;
    background-color: #FFFFFF;
}

.upload-button {
    background-color: transparent;
    color: #616161;
    border: none;
    border-radius: 50%;
    width: 42px;
    height: 42px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s ease;
    margin-right: 8px;
}

.upload-button:hover {
    background-color: #F5F5F5;
    color: #2196F3;
}

.input-container {
    flex: 1;
    display: flex;
    align-items: flex-end;
    background-color: #F5F5F5;
    border-radius: 24px;
    padding: 10px 16px;
    transition: box-shadow 0.3s ease;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.input-container:focus-within {
    box-shadow: 0 0 0 2px #42A5F5;
}

/* Text Area */
#userInput {
    flex: 1;
    border: none;
    background: transparent;
    padding: 8px 0;
    max-height: 120px;
    resize: none;
    font-family: inherit;
    font-size: 15px;
    outline: none;
}

/* Send Button */
.send-button {
    background-color: #2196F3;
    color: white;
    border: none;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s ease;
    margin-left: 8px;
}

.send-button:hover {
    background-color: #1976D2;
    transform: scale(1.05);
}

.send-button:disabled {
    background-color: #BDBDBD;
    cursor: not-allowed;
    transform: none;
}

/* Overlay when side nav is open on mobile */
.overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 999;
}

.overlay.active {
    display: block;
}

/* Responsive adjustments */
@media (min-width: 992px) {
    /* For larger screens */
    .side-nav {
        position: relative;
        left: 0;
        width: 280px;
        flex-shrink: 0;
    }
    
    .main-content {
        width: calc(100% - 280px);
    }
    
    .menu-button {
        display: none;
    }
}

@media (max-width: 991px) {
    /* For tablets and below */
    .app-container {
        flex-direction: column;
    }
    
    .side-nav {
        width: 280px;
    }
}

@media (max-width: 768px) {
    /* For small tablets and phones */
    .message-bubble {
        max-width: 85%;
    }
    
    .suggestion-bubbles {
        max-width: 100%;
    }
    
    .welcome-logo {
        width: 56px;
        height: 56px;
    }
    
    .welcome-logo i {
        font-size: 28px;
    }
    
    .welcome-header h2 {
        font-size: 24px;
    }
}

@media (max-width: 480px) {
    /* For mobile phones */
    .side-nav {
        width: 85%;
    }
    
    .message-bubble {
        max-width: 90%;
    }
    
    .chat-window {
        padding: 12px;
    }
    
    .input-bar {
        padding: 12px;
    }
    
    .top-bar {
        padding: 10px 12px;
        height: 56px;
        position: sticky;
        top: 0;
        z-index: 100;
    }
    
    .top-bar h1 {
        font-size: 18px;
    }
    
    .welcome-header h2 {
        font-size: 22px;
    }
    
    .welcome-subtitle {
        font-size: 14px;
    }
    
    .suggestion-bubble {
        padding: 12px;
    }
    
    .suggestion-bubble i {
        font-size: 18px;
        margin-right: 12px;
    }
    
    .suggestion-bubble span {
        font-size: 14px;
    }
    
    /* Fix input bar to bottom on mobile */
    .input-area {
        position: sticky;
        bottom: 0;
        z-index: 100;
        box-shadow: 0 -2px 5px rgba(0, 0, 0, 0.05);
    }
    
    /* Ensure welcome container is scrollable on small screens */
    .welcome-container {
        height: auto;
        min-height: calc(100% - 120px); /* Leave space for input area */
        overflow-y: auto;
    }
}