* {
    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%);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.chat-container {
    background: white;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    width: 100%;
    max-width: 800px;
    height: 90vh;
    max-height: 800px;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.chat-header {
    background: linear-gradient(135deg, #2563eb 0%, #1e40af 100%);
    color: white;
    padding: 20px 25px;
    border-radius: 20px 20px 0 0;
}

.doctor-info {
    display: flex;
    align-items: center;
    gap: 15px;
}

.doctor-avatar {
    width: 50px;
    height: 50px;
    background: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
}

.doctor-details h1 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 3px;
}

.status {
    font-size: 13px;
    opacity: 0.9;
    display: flex;
    align-items: center;
    gap: 6px;
}

.status::before {
    content: '';
    width: 8px;
    height: 8px;
    background: #10b981;
    border-radius: 50%;
    display: inline-block;
    animation: pulse 2s infinite;
}

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

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
    background: #f9fafb;
    scroll-behavior: smooth;
}

.message {
    display: flex;
    gap: 12px;
    margin-bottom: 20px;
    animation: slideIn 0.3s ease-out;
}

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

.message-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    flex-shrink: 0;
}

.doctor-message .message-avatar {
    background: linear-gradient(135deg, #2563eb 0%, #1e40af 100%);
}

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

.user-message .message-avatar {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
}

.message-content {
    background: white;
    padding: 15px 18px;
    border-radius: 18px;
    max-width: 70%;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.user-message .message-content {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    color: white;
}

.message-content p {
    margin: 0;
    line-height: 1.5;
    font-size: 15px;
}

.message-content p + p {
    margin-top: 10px;
}

.chat-input-container {
    background: white;
    padding: 20px;
    border-top: 1px solid #e5e7eb;
}

.input-wrapper {
    display: flex;
    gap: 10px;
    align-items: flex-end;
}

#userInput {
    flex: 1;
    border: 2px solid #e5e7eb;
    border-radius: 12px;
    padding: 12px 16px;
    font-size: 15px;
    font-family: inherit;
    resize: none;
    max-height: 120px;
    transition: border-color 0.2s;
}

#userInput:focus {
    outline: none;
    border-color: #2563eb;
}

.send-button {
    background: linear-gradient(135deg, #2563eb 0%, #1e40af 100%);
    color: white;
    border: none;
    border-radius: 12px;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: transform 0.2s, opacity 0.2s;
    flex-shrink: 0;
}

.send-button:hover {
    transform: scale(1.05);
}

.send-button:active {
    transform: scale(0.95);
}

.send-button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.send-icon {
    font-size: 20px;
}

.disclaimer {
    margin-top: 10px;
    text-align: center;
    color: #6b7280;
}

.loading-indicator {
    display: none;
    align-items: center;
    gap: 10px;
    padding: 15px 20px;
    background: #f3f4f6;
    margin: 0 20px 20px 20px;
    border-radius: 12px;
}

.loading-indicator.active {
    display: flex;
}

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

.typing-dots span {
    width: 8px;
    height: 8px;
    background: #2563eb;
    border-radius: 50%;
    animation: bounce 1.4s infinite ease-in-out both;
}

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

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

@keyframes bounce {
    0%, 80%, 100% {
        transform: scale(0);
    }
    40% {
        transform: scale(1);
    }
}

.loading-indicator p {
    font-size: 14px;
    color: #6b7280;
    margin: 0;
}

/* Scrollbar styling */
.chat-messages::-webkit-scrollbar {
    width: 8px;
}

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

.chat-messages::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 4px;
}

.chat-messages::-webkit-scrollbar-thumb:hover {
    background: #94a3b8;
}

/* Mobile responsive */
@media (max-width: 768px) {
    body {
        padding: 0;
    }

    .chat-container {
        border-radius: 0;
        height: 100vh;
        max-height: 100vh;
    }

    .chat-header {
        border-radius: 0;
        padding: 15px 20px;
    }

    .message-content {
        max-width: 80%;
    }

    .doctor-details h1 {
        font-size: 18px;
    }
}