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

:root {
    --primary-color: #2563eb;
    --secondary-color: #1e40af;
    --accent-color: #3b82f6;
    --bg-color: #f8fafc;
    --sidebar-bg: #1e293b;
    --chat-bg: #ffffff;
    --user-msg-bg: #2563eb;
    --bot-msg-bg: #f1f5f9;
    --text-dark: #0f172a;
    --text-light: #64748b;
    --border-color: #e2e8f0;
    --success-color: #10b981;
    --error-color: #ef4444;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: var(--bg-color);
    color: var(--text-dark);
    line-height: 1.6;
}

.container {
    display: flex;
    height: 100vh;
    max-width: 1600px;
    margin: 0 auto;
    box-shadow: 0 0 50px rgba(0, 0, 0, 0.1);
}

/* Sidebar Styles */
.sidebar {
    width: 320px;
    background: var(--sidebar-bg);
    color: white;
    padding: 2rem;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.logo-section {
    text-align: center;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    margin-bottom: 0.5rem;
}

.logo i {
    font-size: 2rem;
    color: var(--accent-color);
}

.logo h1 {
    font-size: 1.75rem;
    font-weight: 700;
}

.tagline {
    color: #94a3b8;
    font-size: 0.875rem;
}

.quick-links h3 {
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: #94a3b8;
    margin-bottom: 1rem;
}

.product-link {
    width: 100%;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: white;
    padding: 0.875rem 1rem;
    border-radius: 0.5rem;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
}

.product-link:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateX(5px);
}

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

.action-buttons {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-top: auto;
}

.btn-primary, .btn-secondary {
    padding: 0.875rem 1.5rem;
    border: none;
    border-radius: 0.5rem;
    cursor: pointer;
    font-weight: 600;
    font-size: 0.95rem;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

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

.btn-primary:hover {
    background: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.4);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.15);
}

/* Chat Container */
.chat-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    background: var(--chat-bg);
}

.chat-header {
    background: white;
    padding: 1.25rem 2rem;
    border-bottom: 1px solid var(--border-color);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

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

.header-info i {
    font-size: 2rem;
    color: var(--primary-color);
}

.header-info h2 {
    font-size: 1.25rem;
    margin-bottom: 0.25rem;
}

.status {
    color: var(--success-color);
    font-size: 0.875rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

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

/* Chat Messages */
.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 2rem;
    background: var(--bg-color);
}

.message {
    margin-bottom: 1.5rem;
    animation: slideIn 0.3s ease;
}

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

.message-content {
    max-width: 70%;
    padding: 1rem 1.25rem;
    border-radius: 1rem;
    line-height: 1.6;
}

.user-message .message-content {
    background: var(--user-msg-bg);
    color: white;
    margin-left: auto;
    border-bottom-right-radius: 0.25rem;
}

.bot-message .message-content {
    background: var(--bot-msg-bg);
    color: var(--text-dark);
    border-bottom-left-radius: 0.25rem;
}

.message-content ul {
    margin: 0.5rem 0;
    padding-left: 1.5rem;
}

.message-content li {
    margin: 0.25rem 0;
}

.streaming-text {
    position: relative;
}

.streaming-text::after {
    content: '▋';
    animation: blink 1s infinite;
    margin-left: 2px;
}

@keyframes blink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0; }
}

.message-time {
    display: block;
    font-size: 0.75rem;
    color: var(--text-light);
    margin-top: 0.5rem;
}

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

.appointment-card {
    background: white;
    border: 2px solid var(--primary-color);
    border-radius: 0.75rem;
    padding: 1.25rem;
    margin-top: 0.75rem;
}

.appointment-card h4 {
    color: var(--primary-color);
    margin-bottom: 0.75rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.appointment-card p {
    margin: 0.5rem 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.appointment-card strong {
    color: var(--text-dark);
}

.appointment-id {
    background: var(--primary-color);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    font-weight: 600;
    display: inline-block;
    margin-top: 0.5rem;
}

/* Chat Input */
.chat-input-container {
    padding: 1.5rem 2rem;
    background: white;
    border-top: 1px solid var(--border-color);
}

.typing-indicator {
    display: flex;
    gap: 0.25rem;
    padding: 0.5rem 0;
    margin-bottom: 0.5rem;
}

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

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

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

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

.chat-input {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.chat-input input {
    flex: 1;
    padding: 0.875rem 1.25rem;
    border: 2px solid var(--border-color);
    border-radius: 2rem;
    font-size: 0.95rem;
    transition: all 0.3s ease;
}

.chat-input input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.send-btn {
    width: 48px;
    height: 48px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.send-btn:hover {
    background: var(--secondary-color);
    transform: scale(1.1);
}

/* Modal Styles */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal-content {
    background: white;
    margin: 5% auto;
    padding: 2rem;
    border-radius: 1rem;
    max-width: 500px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    animation: slideDown 0.3s ease;
}

@keyframes slideDown {
    from {
        transform: translateY(-50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.close {
    color: var(--text-light);
    float: right;
    font-size: 2rem;
    font-weight: bold;
    cursor: pointer;
    line-height: 1;
    transition: color 0.3s ease;
}

.close:hover {
    color: var(--text-dark);
}

.modal-content h2 {
    margin-bottom: 1.5rem;
    color: var(--text-dark);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text-dark);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid var(--border-color);
    border-radius: 0.5rem;
    font-size: 0.95rem;
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

#appointmentsList {
    max-height: 400px;
    overflow-y: auto;
    padding-right: 0.5rem;
}

.appointment-item {
    background: var(--bg-color);
    padding: 1.25rem;
    border-radius: 0.75rem;
    margin-bottom: 1rem;
    border-left: 4px solid var(--primary-color);
}

.appointment-item h4 {
    color: var(--primary-color);
    margin-bottom: 0.75rem;
}

.appointment-item p {
    margin: 0.5rem 0;
    color: var(--text-dark);
}

.cancel-btn {
    background: var(--error-color);
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    cursor: pointer;
    margin-top: 0.75rem;
    transition: all 0.3s ease;
}

.cancel-btn:hover {
    background: #dc2626;
    transform: translateY(-2px);
}

.empty-state {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--text-light);
}

.empty-state i {
    font-size: 4rem;
    margin-bottom: 1rem;
    opacity: 0.3;
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .container {
        flex-direction: column;
    }

    .sidebar {
        width: 100%;
        height: auto;
        max-height: 40vh;
    }

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

    .form-row {
        grid-template-columns: 1fr;
    }

    .modal-content {
        margin: 10% 1rem;
        max-width: 100%;
    }
}

/* Scrollbar Styles */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-color);
}

::-webkit-scrollbar-thumb {
    background: var(--text-light);
    border-radius: 4px;
}

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