/* ===========================
   CHATBOT STYLES
   =========================== */

/* Chatbot Toggle Button (thay thế nút contact-developer) */
#chatbot-toggle-btn {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: linear-gradient(135deg, #0277BD 0%, #01579B 100%);
    border: none;
    color: white;
    font-size: 24px;
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(2, 119, 189, 0.4);
    transition: all 0.3s ease;
    z-index: 9998;
    display: flex;
    align-items: center;
    justify-content: center;
}

#chatbot-toggle-btn:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 16px rgba(2, 119, 189, 0.6);
}

#chatbot-toggle-btn:active {
    transform: scale(0.95);
}

/* Chatbot Window */
.chatbot-window {
    position: fixed;
    bottom: 100px;
    right: 30px;
    width: 400px;
    max-width: calc(100vw - 60px);
    height: 600px;
    max-height: calc(100vh - 140px);
    background: white;
    border-radius: 20px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    z-index: 9999;
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.chatbot-window.hidden {
    opacity: 0;
    transform: translateY(20px);
    pointer-events: none;
}

/* Chatbot Header */
.chatbot-header {
    background: linear-gradient(135deg, #0277BD 0%, #01579B 100%);
    color: white;
    padding: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.chatbot-title {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
    font-size: 16px;
}

.chatbot-title i {
    font-size: 20px;
}

.chatbot-close-btn {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: white;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s ease;
}

.chatbot-close-btn:hover {
    background: rgba(255, 255, 255, 0.3);
}

/* Chatbot Messages Area */
.chatbot-messages {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
    background: #f8f9fa;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.chatbot-messages::-webkit-scrollbar {
    width: 6px;
}

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

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

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

/* Chat Message */
.chatbot-message {
    display: flex;
    gap: 12px;
    align-items: flex-start;
    animation: messageSlideIn 0.3s ease;
}

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

.message-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-size: 18px;
}

.bot-message .message-avatar {
    background: linear-gradient(135deg, #0277BD 0%, #01579B 100%);
    color: white;
}

.user-message .message-avatar {
    background: linear-gradient(135deg, #4CAF50 0%, #388E3C 100%);
    color: white;
}

.message-content {
    max-width: 75%;
    padding: 12px 16px;
    border-radius: 16px;
    line-height: 1.5;
}

.bot-message .message-content {
    background: white;
    color: #333;
    border-bottom-left-radius: 4px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

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

.user-message .message-content {
    background: linear-gradient(135deg, #0277BD 0%, #01579B 100%);
    color: white;
    border-bottom-right-radius: 4px;
}

.message-content p {
    margin: 0 0 8px 0;
}

.message-content p:last-child {
    margin-bottom: 0;
}

.message-content ul {
    margin: 8px 0;
    padding-left: 20px;
}

.message-content li {
    margin: 4px 0;
}

/* Typing Indicator */
.typing-indicator .message-content {
    padding: 16px 20px;
}

.typing-dots {
    display: flex;
    gap: 6px;
    align-items: center;
}

.typing-dots span {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #0277BD;
    animation: typingDot 1.4s infinite;
}

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

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

@keyframes typingDot {
    0%, 60%, 100% {
        transform: translateY(0);
        opacity: 0.7;
    }
    30% {
        transform: translateY(-10px);
        opacity: 1;
    }
}

/* Disclaimer */
.chatbot-disclaimer {
    background: #fff3cd;
    border-top: 2px solid #ffc107;
    padding: 10px 16px;
    font-size: 12px;
    color: #856404;
    display: flex;
    align-items: center;
    gap: 8px;
}

.chatbot-disclaimer i {
    font-size: 14px;
    flex-shrink: 0;
}

/* Input Area */
.chatbot-input-area {
    padding: 16px;
    background: white;
    border-top: 1px solid #e0e0e0;
    display: flex;
    gap: 12px;
}

.chatbot-input {
    flex: 1;
    padding: 12px 16px;
    border: 2px solid #e0e0e0;
    border-radius: 24px;
    outline: none;
    font-size: 14px;
    font-family: 'Be Vietnam Pro', sans-serif;
    transition: border-color 0.2s ease;
}

.chatbot-input:focus {
    border-color: #0277BD;
}

.chatbot-send-btn {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: linear-gradient(135deg, #0277BD 0%, #01579B 100%);
    border: none;
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    flex-shrink: 0;
}

.chatbot-send-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 8px rgba(2, 119, 189, 0.3);
}

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

/* Responsive Design */
@media (max-width: 768px) {
    .chatbot-window {
        right: 15px;
        bottom: 90px;
        width: calc(100vw - 30px);
        height: calc(100vh - 120px);
    }

    #chatbot-toggle-btn {
        right: 15px;
        bottom: 20px;
        width: 56px;
        height: 56px;
        font-size: 22px;
    }

    .message-content {
        max-width: 85%;
        font-size: 14px;
    }

    .chatbot-header {
        padding: 16px;
    }

    .chatbot-messages {
        padding: 16px;
    }
}