:root {
    --chatbot-primary: #0073e6;
    --chatbot-bg: #ffffff;
    --chatbot-header-bg: #f5f7fa;
    --chatbot-user-msg-bg: #0073e6;
    --chatbot-bot-msg-bg: #e9ebee;
    --chatbot-text-light: #ffffff;
    --chatbot-text-dark: #1d2c3f;
    --chatbot-font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

#chatbot-open-btn {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 60px;
    height: 60px;
    background-color: var(--chatbot-primary);
    color: var(--chatbot-text-light);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    display: flex;
    justify-content: center;
    align-items: center;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    z-index: 9998;
}
#chatbot-open-btn:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
}

.chatbot-container {
    position: fixed;
    bottom: 90px;
    right: 20px;
    width: 370px;
    max-width: calc(100vw - 40px);
    height: 600px;
    max-height: calc(100vh - 110px);
    background-color: var(--chatbot-bg);
    border-radius: 16px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    font-family: var(--chatbot-font);
    transform: scale(0.95) translateY(10px);
    opacity: 0;
    visibility: hidden;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.3s ease;
    z-index: 9999;
}
.chatbot-container.active {
    transform: scale(1) translateY(0);
    opacity: 1;
    visibility: visible;
}

.chatbot-header {
    background-color: var(--chatbot-header-bg);
    padding: 12px 20px;
    border-bottom: 1px solid #e0e0e0;
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
}
.chatbot-header-avatar { color: var(--chatbot-primary); }
.chatbot-header-title { flex-grow: 1; }
.chatbot-header-title strong { color: var(--chatbot-text-dark); font-size: 16px; }
.chatbot-header-title small { color: #657786; font-size: 13px; display: block; }

#chatbot-close-btn {
    background: none; border: none; font-size: 28px; cursor: pointer;
    color: #999; line-height: 1; padding: 0;
}

.chatbot-messages {
    flex-grow: 1;
    padding: 20px;
    overflow-y: auto;
}
.chatbot-message {
    margin-bottom: 15px;
    padding: 12px 18px;
    border-radius: 22px;
    max-width: 85%;
    line-height: 1.5;
    font-size: 15px;
    clear: both;
}
.chatbot-message.user {
    background-color: var(--chatbot-user-msg-bg);
    color: var(--chatbot-text-light);
    float: right;
    border-bottom-right-radius: 6px;
}
.chatbot-message.bot {
    background-color: var(--chatbot-bot-msg-bg);
    color: var(--chatbot-text-dark);
    float: left;
    border-bottom-left-radius: 6px;
}
.chatbot-message.loading {
    display: flex; align-items: center; padding: 15px;
}
.chatbot-message.loading span {
    height: 10px; width: 10px; margin: 0 2px; background-color: #b0b8c2;
    border-radius: 50%; display: inline-block;
    animation: bounce 1.4s infinite ease-in-out both;
}
.chatbot-message.loading span:nth-child(1) { animation-delay: -0.32s; }
.chatbot-message.loading span:nth-child(2) { animation-delay: -0.16s; }
@keyframes bounce { 0%, 80%, 100% { transform: scale(0); } 40% { transform: scale(1.0); } }

.chatbot-quick-replies {
    padding: 0 15px 15px;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}
.quick-reply-btn {
    background-color: #fff;
    border: 1px solid var(--chatbot-primary);
    color: var(--chatbot-primary);
    border-radius: 20px;
    padding: 8px 16px;
    font-size: 14px;
    cursor: pointer;
    transition: background-color 0.2s, color 0.2s;
}
.quick-reply-btn:hover {
    background-color: var(--chatbot-primary);
    color: #fff;
}

.chatbot-input-area {
    display: flex;
    padding: 15px;
    border-top: 1px solid #e0e0e0;
    background-color: var(--chatbot-bg);
    gap: 10px;
}
#chatbot-input {
    flex-grow: 1;
    border: 1px solid #ccc;
    border-radius: 25px;
    padding: 12px 20px;
    font-size: 15px;
    font-family: var(--chatbot-font);
}
#chatbot-input:focus {
    outline: none;
    border-color: var(--chatbot-primary);
    box-shadow: 0 0 0 2px rgba(0, 115, 230, 0.2);
}
#chatbot-send-btn {
    background-color: var(--chatbot-primary);
    color: var(--chatbot-text-light);
    border: none;
    border-radius: 50%;
    width: 48px;
    height: 48px;
    flex-shrink: 0;
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
}