/* ==================== CSS Reset ==================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* ==================== Root Variables ==================== */
:root {
    --primary-color: #0055FF;
    --primary-hover: #0044DD;
    --secondary-color: #6C757D;
    --success-color: #28A745;
    --danger-color: #DC3545;
    --warning-color: #FFC107;

    --bg-primary: #F8F9FA;
    --bg-secondary: #FFFFFF;
    --bg-sidebar: #2C3E50;
    --bg-message-user: #0055FF;
    --bg-message-assistant: #F1F3F5;
    --bg-code: #1E1E1E;

    --text-primary: #212529;
    /* --text-secondary: #6C757D;
     */
    --text-secondary: #FFFFFF;
    --text-light: #FFFFFF;
    --text-code: #E8E8E8;

    --border-color: #DEE2E6;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.2);

    --border-radius: 8px;
    --sidebar-width: 280px;
    --header-height: 60px;
    --input-height: 120px;
}

/* ==================== Body & Container ==================== */
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
        'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    overflow: hidden;
}

.chatbot-container {
    display: flex;
    height: 100vh;
    width: 100vw;
}

/* ==================== Sidebar ==================== */
.sidebar {
    width: var(--sidebar-width);
    background-color: var(--bg-sidebar);
    color: var(--text-light);
    display: flex;
    flex-direction: column;
    transition: transform 0.3s ease;
    box-shadow: var(--shadow-md);
    z-index: 100;
}

.sidebar.hidden {
    transform: translateX(-100%);
}

.sidebar-header {
    padding: 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.sidebar-header h2 {
    font-size: 18px;
    margin-bottom: 15px;
}

.btn-new-chat {
    width: 100%;
    padding: 10px;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    transition: background-color 0.2s;
}

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

.session-list {
    flex: 1;
    overflow-y: auto;
    padding: 10px;
}

.session-item {
    padding: 12px 15px;
    margin-bottom: 8px;
    background-color: rgba(255, 255, 255, 0.05);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: background-color 0.2s;
}

.session-item:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

.session-item.active {
    background-color: rgba(0, 85, 255, 0.2);
    border-left: 3px solid var(--primary-color);
}

.session-title {
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 4px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.session-time {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.6);
}

.sidebar-footer {
    padding: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.user-info {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.user-email {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.8);
    word-break: break-all;
}

.btn-logout {
    padding: 8px;
    background-color: var(--danger-color);
    color: white;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-size: 13px;
    transition: opacity 0.2s;
}

.btn-logout:hover {
    opacity: 0.9;
}

/* ==================== Main Chat Area ==================== */
.chat-main {
    flex: 1;
    display: flex;
    flex-direction: column;
    background-color: var(--bg-secondary);
}

.chat-header {
    height: var(--header-height);
    padding: 0 20px;
    display: flex;
    align-items: center;
    gap: 15px;
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
}

.btn-toggle-sidebar {
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--text-primary);
    padding: 5px 10px;
    border-radius: var(--border-radius);
    transition: background-color 0.2s;
}

.btn-toggle-sidebar:hover {
    background-color: var(--bg-primary);
}

.chat-header h1 {
    flex: 1;
    font-size: 20px;
    font-weight: 600;
}

/* ==================== Messages Container ==================== */
.messages-container {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
    background-color: var(--bg-primary);
}

.welcome-message {
    max-width: 700px;
    margin: 40px auto;
    padding: 30px;
    background-color: var(--bg-secondary);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
}

.welcome-message h2 {
    font-size: 24px;
    margin-bottom: 15px;
    color: var(--primary-color);
}

.welcome-message p {
    font-size: 16px;
    color: var(--text-secondary);
    margin-bottom: 15px;
}

.welcome-message ul {
    list-style: none;
    padding-left: 0;
}

.welcome-message li {
    padding: 8px 0;
    padding-left: 25px;
    position: relative;
    color: var(--text-primary);
}

.welcome-message li::before {
    content: "•";
    position: absolute;
    left: 10px;
    color: var(--primary-color);
    font-weight: bold;
}

.message {
    display: flex;
    margin-bottom: 20px;
    animation: fadeIn 0.3s ease;
    position: relative; /* For absolute positioning of feedback buttons */
}

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

#loginModal .modal-content #emailInput{
    border: none;
}

#loginModal .modal-content{
    max-width: 550px;
}

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

.message.assistant {
    justify-content: flex-start;
}

.message-content {
    padding: 12px 16px;
    border-radius: var(--border-radius);
    word-wrap: break-word;
}

.message.user .message-content {
    background-color: var(--bg-message-user);
    color: var(--text-light);
    border-bottom-right-radius: 4px;
}

.message.assistant .message-content {
    background-color: var(--bg-message-assistant);
    color: var(--text-primary);
    border-bottom-left-radius: 4px;
    padding-bottom: 40px;
}

.message-time {
    font-size: 11px;
    color: var(--text-secondary);
    margin-top: 5px;
    text-align: right;
}

.message.user .message-time {
    color: rgba(255, 255, 255, 0.7);
}

/* ==================== Message Feedback Buttons ==================== */
/* .message-feedback {
    position: absolute;
    bottom: 2px;
    right: 4px;
    display: flex;
    gap: 4px;
    opacity: 0.7;
    transition: opacity 0.2s;
    z-index: 10;
}

.message.assistant:hover .message-feedback {
    opacity: 1;
} */
/* 
.feedback-btn {
    background: rgba(255, 255, 255, 0.95);
    border: 1px solid var(--border-color);
    border-radius: 3px;
    padding: 2px 6px;
    font-size: 12px;
    cursor: pointer;
    transition: all 0.2s;
    opacity: 0.9;
    line-height: 1;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.feedback-btn:hover:not(:disabled) {
    opacity: 1;
    transform: scale(1.15);
    background-color: rgba(255, 255, 255, 1);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.feedback-btn.thumbs-up:hover:not(:disabled) {
    border-color: var(--success-color);
}

.feedback-btn.thumbs-down:hover:not(:disabled) {
    border-color: var(--danger-color);
}

.feedback-btn.active {
    opacity: 1;
    background-color: rgba(0, 85, 255, 0.1);
    border-color: var(--primary-color);
}

.feedback-btn.thumbs-up.active {
    background-color: rgba(40, 167, 69, 0.1);
    border-color: var(--success-color);
    color: var(--success-color);
}

.feedback-btn.thumbs-down.active {
    background-color: rgba(220, 53, 69, 0.1);
    border-color: var(--danger-color);
    color: var(--danger-color);
}

.feedback-btn:disabled {
    cursor: not-allowed;
    opacity: 0.5;
} */

.typing-indicator {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 16px;
}

.thinking-text {
    color: var(--text-secondary);
    font-size: 14px;
    font-style: italic;
}

.typing-dots {
    display: flex;
    gap: 4px;
}

.typing-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--secondary-color);
    animation: typing 1.4s infinite;
}

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

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

@keyframes typing {
    0%, 60%, 100% {
        transform: translateY(0);
    }
    30% {
        transform: translateY(-10px);
    }
}

/* ==================== Markdown Styles ==================== */
.message-content h1,
.message-content h2,
.message-content h3,
.message-content h4,
.message-content h5,
.message-content h6 {
    margin-top: 16px;
    margin-bottom: 8px;
    font-weight: 600;
}

.message-content h1 { font-size: 1.8em; }
.message-content h2 { font-size: 1.5em; }
.message-content h3 { font-size: 1.3em; }

.message-content p {
    margin-bottom: 12px;
    line-height: 1.6;
}

.message-content ul,
.message-content ol {
    margin-left: 20px;
    margin-bottom: 12px;
}

.message-content li {
    margin-bottom: 6px;
    line-height: 1.5;
}

.message-content a {
    color: var(--primary-color);
    text-decoration: none;
}

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

.message-content code {
    background-color: rgba(0, 0, 0, 0.05);
    padding: 2px 6px;
    border-radius: 3px;
    font-family: 'Courier New', monospace;
    font-size: 0.9em;
}

.message-content pre {
    background-color: var(--bg-code);
    padding: 16px;
    border-radius: var(--border-radius);
    overflow-x: auto;
    margin: 12px 0;
}

.message-content pre code {
    background-color: transparent;
    padding: 0;
    color: var(--text-code);
    font-size: 14px;
    line-height: 1.5;
}

.message-content blockquote {
    border-left: 4px solid var(--primary-color);
    padding-left: 16px;
    margin: 12px 0;
    color: var(--text-secondary);
    font-style: italic;
}

.message-content table {
    border-collapse: collapse;
    width: 100%;
    margin: 12px 0;
}

.message-content th,
.message-content td {
    border: 1px solid var(--border-color);
    padding: 8px 12px;
    text-align: left;
}

.message-content th {
    background-color: var(--bg-primary);
    font-weight: 600;
}

.message-content img {
    max-width: 100%;
    border-radius: var(--border-radius);
    margin: 12px 0;
}

/* ==================== Input Area ==================== */
.input-area {
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 15px 20px;
}

.input-container {
    display: flex;
    gap: 10px;
    align-items: flex-end;
}
/* 
#userInput {
    flex: 1;
    padding: 12px 15px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 14px;
    font-family: inherit;
    resize: none;
    max-height: 150px;
    overflow-y: auto;
}

#userInput:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 85, 255, 0.1);
} */

.btn-send {
    padding: 12px 16px;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: background-color 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.btn-send:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.input-footer {
    display: flex;
    justify-content: space-between;
    margin-top: 8px;
    font-size: 12px;
    color: var(--text-secondary);
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: 6px;
}

.status-indicator::before {
    content: "";
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--success-color);
}

.status-indicator.sending::before {
    background-color: var(--warning-color);
    animation: pulse 1s infinite;
}

.status-indicator.error::before {
    background-color: var(--danger-color);
}

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

/* ==================== Modal ==================== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal.show {
    display: flex;
}

.modal-content {
    background-color: var(--bg-secondary);
    padding: 40px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    max-width: 400px;
    width: 90%;
}

.modal-content h2 {
    margin-bottom: 10px;
    color: var(--primary-color);
}

.modal-content p {
    margin-bottom: 20px;
    color: var(--text-secondary);
}

.modal-content form {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.modal-content input {
    padding: 12px 15px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 14px;
}

.modal-content input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 85, 255, 0.1);
}

.btn-primary {
    padding: 12px 20px;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    transition: background-color 0.2s;
}

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

/* ==================== Responsive Design ==================== */
@media (max-width: 768px) {
    .sidebar {
        position: absolute;
        height: 100%;
        z-index: 200;
    }

    .message-content {
        max-width: 85%;
    }

    .chat-header h1 {
        font-size: 16px;
    }
}

/* ==================== Scrollbar Styles ==================== */
.messages-container::-webkit-scrollbar,
.session-list::-webkit-scrollbar {
    width: 8px;
}

.messages-container::-webkit-scrollbar-track,
.session-list::-webkit-scrollbar-track {
    background: transparent;
}

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

.session-list::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.2);
    border-radius: 4px;
}

.messages-container::-webkit-scrollbar-thumb:hover,
.session-list::-webkit-scrollbar-thumb:hover {
    background: var(--secondary-color);
}
/* Problem Solved Button */
.message {
    position: relative;
}
/* 
.problem-solved-btn {
    position: absolute;
    bottom: 8px;
    left: 8px;
    padding: 6px 12px;
    font-size: 12px;
    font-weight: 500;
    color: var(--text-secondary);
    background: rgba(255, 255, 255, 0.95);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    opacity: 0.8;
}

.problem-solved-btn:hover:not(:disabled) {
    opacity: 1;
    transform: scale(1.05);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
    background: #fff;
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.problem-solved-btn.solved {
    background: #10b981;
    color: white;
    border-color: #10b981;
    opacity: 1;
    cursor: default;
}

.problem-solved-btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
} */