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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    height: 100vh;
    overflow: hidden;
}

/* Chat Container */
.chat-container {
    display: flex;
    flex-direction: column;
    height: 100vh;
    max-width: 1200px;
    margin: 0 auto;
    background: white;
    box-shadow: 0 0 50px rgba(0, 0, 0, 0.1);
}

/* Header */
.chat-header {
    background: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
    color: white;
    padding: 1rem 1.5rem;
    border-bottom: 1px solid #34495e;
}

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

.header-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.action-buttons {
    display: flex;
    gap: 0.5rem;
}

.action-btn {
    width: 36px;
    height: 36px;
    border: none;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    font-size: 0.9rem;
}

.action-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: scale(1.05);
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.2rem;
    font-weight: 600;
}

.logo i {
    font-size: 1.5rem;
    color: #3498db;
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #e74c3c;
    animation: pulse 2s infinite;
}

.status-dot.connected {
    background: #27ae60;
    animation: none;
}

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

/* Messages Area */
.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 1rem;
    background: #f8f9fa;
    scroll-behavior: smooth;
}

.message {
    display: flex;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
    animation: fadeInUp 0.3s ease-out;
}

.message.user-message {
    flex-direction: row-reverse;
}

.message-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.bot-message .message-avatar {
    background: linear-gradient(135deg, #3498db, #2980b9);
    color: white;
}

.user-message .message-avatar {
    background: linear-gradient(135deg, #27ae60, #229954);
    color: white;
}

.user-message .message-avatar i::before {
    content: "\f007"; /* fa-user */
}

.message-content {
    max-width: 70%;
    min-width: 100px;
}

.message-text {
    background: white;
    padding: 0.75rem 1rem;
    border-radius: 18px;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
    line-height: 1.4;
    word-wrap: break-word;
}

.user-message .message-text {
    background: linear-gradient(135deg, #3498db, #2980b9);
    color: white;
}

.message-time {
    font-size: 0.75rem;
    color: #6c757d;
    margin-top: 0.25rem;
    padding: 0 1rem;
}

.user-message .message-time {
    text-align: right;
}

/* Typing Indicator */
.typing-indicator {
    padding: 0 1rem;
}

.typing-dots {
    display: flex;
    gap: 4px;
    padding: 0.75rem 1rem;
    background: white;
    border-radius: 18px;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.typing-dots span {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #bdc3c7;
    animation: typing 1.4s infinite ease-in-out;
}

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

@keyframes typing {
    0%, 80%, 100% { transform: scale(0.8); opacity: 0.5; }
    40% { transform: scale(1); opacity: 1; }
}

/* Input Area */
.chat-input-container {
    background: white;
    border-top: 1px solid #e9ecef;
    padding: 1rem 1.5rem;
}

.chat-input-wrapper {
    display: flex;
    gap: 0.75rem;
    align-items: flex-end;
    background: #f8f9fa;
    border: 2px solid #e9ecef;
    border-radius: 24px;
    padding: 0.5rem 1rem;
    transition: border-color 0.2s ease;
}

.chat-input-wrapper:focus-within {
    border-color: #3498db;
}

#messageInput {
    flex: 1;
    border: none;
    outline: none;
    background: transparent;
    resize: none;
    font-size: 1rem;
    line-height: 1.4;
    max-height: 120px;
    min-height: 24px;
    font-family: inherit;
}

#messageInput::placeholder {
    color: #6c757d;
}

.send-button {
    width: 40px;
    height: 40px;
    border: none;
    border-radius: 50%;
    background: linear-gradient(135deg, #3498db, #2980b9);
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    flex-shrink: 0;
}

.send-button:hover:not(:disabled) {
    transform: scale(1.05);
    box-shadow: 0 4px 12px rgba(52, 152, 219, 0.3);
}

.send-button:disabled {
    background: #bdc3c7;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.input-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 0.5rem;
    font-size: 0.75rem;
    color: #6c757d;
}

.powered-by {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

/* Login Overlay */
.login-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1001;
}

.login-container {
    background: white;
    border-radius: 16px;
    padding: 2rem;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    max-width: 400px;
    width: 90%;
    animation: slideInUp 0.5s ease-out;
}

.login-header {
    text-align: center;
    margin-bottom: 2rem;
}

.login-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.login-logo i {
    font-size: 2rem;
    color: #3498db;
}

.login-logo h2 {
    color: #2c3e50;
    font-size: 1.8rem;
    font-weight: 600;
}

.login-header p {
    color: #6c757d;
    font-size: 0.9rem;
}

.login-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-group {
    position: relative;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: #2c3e50;
    font-weight: 500;
    font-size: 0.9rem;
}

.form-group input {
    width: 100%;
    padding: 0.75rem 1rem 0.75rem 2.5rem;
    border: 2px solid #e9ecef;
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.2s ease;
    background: #f8f9fa;
}

.form-group input:focus {
    outline: none;
    border-color: #3498db;
    background: white;
}

.form-icon {
    position: absolute;
    left: 0.75rem;
    top: 2.25rem;
    color: #6c757d;
    font-size: 0.9rem;
}

.password-toggle {
    position: absolute;
    right: 0.75rem;
    top: 2.25rem;
    background: none;
    border: none;
    color: #6c757d;
    cursor: pointer;
    padding: 0;
    font-size: 0.9rem;
}

.password-toggle:hover {
    color: #3498db;
}

.login-btn {
    background: linear-gradient(135deg, #3498db, #2980b9);
    color: white;
    border: none;
    padding: 0.75rem 1rem;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin-top: 0.5rem;
}

.login-btn:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(52, 152, 219, 0.3);
}

.login-btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

.btn-spinner {
    font-size: 0.9rem;
}

.login-divider {
    text-align: center;
    position: relative;
    margin: 1rem 0;
}

.login-divider::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 1px;
    background: #e9ecef;
}

.login-divider span {
    background: white;
    padding: 0 1rem;
    color: #6c757d;
    font-size: 0.9rem;
}

.guest-btn {
    background: transparent;
    color: #6c757d;
    border: 2px solid #e9ecef;
    padding: 0.75rem 1rem;
    border-radius: 8px;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.guest-btn:hover {
    border-color: #3498db;
    color: #3498db;
}

.login-footer {
    margin-top: 2rem;
    padding-top: 1rem;
    border-top: 1px solid #e9ecef;
    text-align: center;
    font-size: 0.8rem;
    color: #6c757d;
}

.login-footer p {
    margin: 0.25rem 0;
}

.login-error {
    background: #fee;
    border: 1px solid #fcc;
    color: #c33;
    padding: 0.75rem;
    border-radius: 8px;
    margin-top: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Loading Overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.95);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.loading-spinner {
    text-align: center;
    color: #3498db;
}

.loading-spinner i {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.loading-spinner p {
    font-size: 1.1rem;
    color: #2c3e50;
}

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1001;
}

.modal-content {
    background: white;
    border-radius: 12px;
    max-width: 400px;
    width: 90%;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    border-bottom: 1px solid #e9ecef;
}

.modal-header h3 {
    color: #e74c3c;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: #6c757d;
    padding: 0;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: background-color 0.2s ease;
}

.modal-close:hover {
    background: #f8f9fa;
}

.modal-body {
    padding: 1.5rem;
}

.modal-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid #e9ecef;
    text-align: right;
}

.btn {
    padding: 0.5rem 1rem;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.2s ease;
}

.btn-primary {
    background: #3498db;
    color: white;
}

.btn-primary:hover {
    background: #2980b9;
}

.btn-secondary {
    background: #6c757d;
    color: white;
}

.btn-secondary:hover {
    background: #5a6268;
}

.btn-danger {
    background: #e74c3c;
    color: white;
}

.btn-danger:hover {
    background: #c0392b;
}

.large-modal .modal-content {
    max-width: 600px;
    max-height: 80vh;
}

.large-modal .modal-body {
    max-height: 400px;
    overflow-y: auto;
}

/* Rating Section */
.rating-section {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid #e9ecef;
}

.rating-stars {
    display: flex;
    gap: 0.25rem;
    margin: 0.5rem 0;
}

.rating-stars i {
    font-size: 1.5rem;
    color: #ddd;
    cursor: pointer;
    transition: color 0.2s ease;
}

.rating-stars i:hover,
.rating-stars i.active {
    color: #f39c12;
}

.rating-section textarea {
    width: 100%;
    margin-top: 0.5rem;
    padding: 0.5rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    resize: vertical;
    font-family: inherit;
}

/* History List */
.history-list {
    max-height: 350px;
    overflow-y: auto;
}

.history-item {
    padding: 1rem;
    border: 1px solid #e9ecef;
    border-radius: 8px;
    margin-bottom: 0.5rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.history-item:hover {
    background: #f8f9fa;
    border-color: #3498db;
}

.history-item-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.history-item-title {
    font-weight: 600;
    color: #2c3e50;
}

.history-item-date {
    font-size: 0.8rem;
    color: #6c757d;
}

.history-item-preview {
    font-size: 0.9rem;
    color: #6c757d;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.history-item-stats {
    display: flex;
    gap: 1rem;
    margin-top: 0.5rem;
    font-size: 0.8rem;
    color: #6c757d;
}

.no-history {
    text-align: center;
    padding: 2rem;
    color: #6c757d;
}

.no-history i {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

/* Session Info */
.session-info {
    background: #e3f2fd;
    border: 1px solid #bbdefb;
    border-radius: 8px;
    padding: 0.75rem;
    margin-bottom: 1rem;
    font-size: 0.9rem;
    color: #1565c0;
}

.session-info i {
    margin-right: 0.5rem;
}

/* User Info */
.user-info {
    background: #f0f8ff;
    border: 1px solid #b3d9ff;
    border-radius: 8px;
    padding: 0.75rem;
    margin-bottom: 1rem;
    font-size: 0.9rem;
    color: #0066cc;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.user-info .user-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: linear-gradient(135deg, #3498db, #2980b9);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
}

.user-details {
    flex: 1;
}

.user-name {
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.user-session {
    font-size: 0.8rem;
    opacity: 0.8;
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

.chat-messages::-webkit-scrollbar-track {
    background: #f1f1f1;
}

.chat-messages::-webkit-scrollbar-thumb {
    background: #c1c1c1;
    border-radius: 3px;
}

.chat-messages::-webkit-scrollbar-thumb:hover {
    background: #a8a8a8;
}

/* Responsive Design */
@media (max-width: 768px) {
    .chat-container {
        height: 100vh;
        border-radius: 0;
    }
    
    .message-content {
        max-width: 85%;
    }
    
    .chat-header {
        padding: 1rem;
    }
    
    .chat-input-container {
        padding: 1rem;
    }
    
    .header-content {
        flex-direction: column;
        gap: 0.5rem;
        align-items: flex-start;
    }
    
    .header-actions {
        align-self: flex-end;
        width: 100%;
        justify-content: space-between;
    }
    
    .action-buttons {
        gap: 0.25rem;
    }
    
    .action-btn {
        width: 32px;
        height: 32px;
        font-size: 0.8rem;
    }
}

@media (max-width: 480px) {
    .logo {
        font-size: 1rem;
    }
    
    .message-avatar {
        width: 32px;
        height: 32px;
        font-size: 1rem;
    }
    
    .message-text {
        padding: 0.5rem 0.75rem;
        font-size: 0.9rem;
    }
}