/* Modern reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
}

:root {
    --primary-color: #007bff ;
    --secondary-color: #5b68df;
    --primary-hover: #4a56c9;
    --background-color: #f8f9fa;
    --chat-bg: #ffffff;
    --text-color: #333333;
    --light-text: #6c757d;
    --border-color: #e9ecef;
    --user-message-bg: #f0f4ff;
    --bot-message-bg: #ffffff;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    --border-radius: 16px;
    --transition: all 0.3s ease;
}

body {
    background-color: var(--background-color);
}

/* Chatbot Widget Container */
#chatbot-widget {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 60px;
    height: 60px;
    background-color: var(--primary-color);
    border-radius: 30px;
    box-shadow: var(--shadow);
    overflow: hidden;
    transition: var(--transition);
    z-index: 1000;
    display: flex;
    flex-direction: column;
    background: transparent;
}

#chatbot-widget.expanded {
    width: 460px;
    height: 620px;
    border-radius: var(--border-radius);
}

/* Chatbot Header */
#chatbot-header {
    padding: 15px;
    background-color: var(--primary-color);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    flex-shrink: 0;
    height: 65px;
    transition: var(--transition);
    margin-bottom: 0; 
    border-bottom: 1px solid var(--border-color); 
}

#chatbot-widget.expanded #chatbot-header {
    height: 80px;
    justify-content: space-between;
    color: black;
    background-color: white;
}

.app-header {
    display: flex;
    align-items: center;
    opacity: 0;
    transition: var(--transition);
    width: 0;
    overflow: hidden;
}

#chatbot-widget.expanded .app-header {
    opacity: 1;
    width: auto;
    overflow: visible;
}

.chatbot-app-icon {
    width: 48px;
    height: 48px;
    border-radius: 8px;
    margin-right: 10px;
}

.chatbot-app-info h5 {
    font-size: 16px;
    font-weight: 600;
    margin: 0;
}

.chat-icon {
    width: 24px;
    height: 24px;
    transition: var(--transition);
}

.chat-icon.chat {
    opacity: 1;
}

.chat-icon.minimize {
    opacity: 0;
    position: absolute;
    right: 16px;
    transform: scale(0);
}

#chatbot-widget.expanded .chat-icon.chat {
    opacity: 0;
    transform: scale(0);
}

#chatbot-widget.expanded .chat-icon.minimize {
    opacity: 1;
    transform: scale(1);
}

/* Messages Container */
#chatbot-messages {
    flex-grow: 1;
    padding: 16px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 12px;
    background-color: var(--chat-bg);
    opacity: 0;
    transform: translateY(20px);
    transition: var(--transition);
    margin-top: 0; 
    padding-top: 12px; 
}

#chatbot-widget.expanded #chatbot-messages {
    transition: opacity 0.3s ease, transform 0.3s ease;
    opacity: 1;
    transform: translateY(0);
}

/* Message Bubbles */
.chatbot-message {
    padding: 12px 16px;
    border-radius: 18px;
    max-width: 85%;
    word-wrap: break-word;
    line-height: 1.5;
    font-size: 18px;
    position: relative;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.04);
}

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

.chatbot-bot-message {
    background-color: var(--bot-message-bg);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    align-self: flex-start;
    border-bottom-left-radius: 4px;
}

.chatbot-user-message {
    background-color: var(--primary-color);
    color: white;
    align-self: flex-end;
    border-bottom-right-radius: 4px;
}

/* Typing Indicator */
.typing-indicator {
    display: flex;
    align-items: center;
    align-self: flex-start;
    background-color: var(--bot-message-bg);
    padding: 12px 16px;
    border-radius: 18px;
    border-bottom-left-radius: 4px;
    border: 1px solid var(--border-color);
    margin-top: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.04);
}

.typing-dot {
    width: 8px;
    height: 8px;
    background-color: var(--light-text);
    border-radius: 50%;
    margin: 0 2px;
    animation: pulse 1.5s infinite;
    opacity: 0.6;
}

.typing-dot:nth-child(1) {
    animation-delay: 0s;
}

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

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

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.2);
        opacity: 1;
    }
}

/* Input Area */
#chatbot-input {
    display: flex;
    padding: 12px 16px;
    background-color: var(--chat-bg);
    border-top: 1px solid var(--border-color);
    opacity: 0;
    transform: translateY(20px);
    transition: var(--transition);
    visibility: hidden;
}

#chatbot-widget.expanded #chatbot-input {
    opacity: 1;
    transform: translateY(0);
    visibility: visible;
}

#chatbot-message-input {
    flex-grow: 1;
    padding: 10px 14px;
    border: 1px solid var(--border-color);
    border-radius: 24px;
    font-size: 14px;
    outline: none;
    transition: var(--transition);
}

#chatbot-message-input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(91, 104, 223, 0.1);
}

#chatbot-send-button {
    width: 40px;
    border: none;
    background-color: var(--primary-color);
    color: white;
    border-radius: 20px;
    margin-left: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

#chatbot-send-button:hover {
    background-color: var(--primary-hover);
    transform: scale(1.05);
}

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

/* Send Icon */
.send-icon {
    width: 16px;
    height: 16px;
    fill: white;
}

/* Scrollbar styling */
#chatbot-messages::-webkit-scrollbar {
    width: 6px;
}

#chatbot-messages::-webkit-scrollbar-track {
    background: transparent;
}

#chatbot-messages::-webkit-scrollbar-thumb {
    background-color: rgba(0, 0, 0, 0.1);
    border-radius: 6px;
    transition: var(--transition);
}

#chatbot-messages::-webkit-scrollbar-thumb:hover {
    background-color: rgba(0, 0, 0, 0.2);
}

@media (max-width: 768px) {
    #chatbot-widget.expanded {
        height: 600px;
        width: 320px;
    }

}