@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;600&display=swap');

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: Poppins, sans-serif;
}

/* Nền tím than */
body {
    background: #0a0710;
    color: white;
    display: flex;
    justify-content: center;
    padding: 40px 10px;
}

.container {
    width: 100%;
    max-width: 750px;
}

/* CHAT BOX — màu tím neon */
.chat-box {
    background: #120f1a;
    border-radius: 14px;
    padding: 20px;
    border: 1px solid #b84cff44;
    box-shadow: 0 0 18px #b84cff55;
    margin-bottom: 35px;
}

#chat-messages {
    height: 380px;
    overflow-y: auto;
    margin-bottom: 15px;
    padding-right: 5px;
}

/* Bong bóng */
.message {
    margin: 10px 0;
    padding: 12px 16px;
    border-radius: 10px;
    max-width: 90%;
    line-height: 1.4;
    font-size: 15px;
}

/* User — tím đậm */
.user {
    background: #2b1440;
    margin-left: auto;
    border-right: 3px solid #c46bff;
}

/* Bot — tím tối */
.bot {
    background: #1b1227;
    border-left: 3px solid #c46bff;
}

/* INPUT */
#chat-input {
    width: 100%;
    padding: 13px 14px;
    background: #0b0710;
    color: white;
    border: 1px solid #b84cff66;
    border-radius: 10px;
    outline: none;
    font-size: 16px;
}

#chat-input:focus {
    border-color: #d58dff;
    box-shadow: 0 0 12px #d58dffaa;
}

/* FOOTER */
.footer {
    margin-top: 40px;
    display: flex;
    align-items: center;
    gap: 18px;
    padding: 20px;
    border-radius: 16px;
    background: rgba(25, 15, 40, 0.9);
    border: 1px solid #b84cff44;
    box-shadow: 0 0 12px #b84cff55;
    backdrop-filter: blur(8px);
}

.footer-avatar {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    border: 2px solid #c46bff;
}

.footer-title {
    font-size: 22px;
    font-weight: 600;
    color: #eecbff;
}

.footer-sub {
    opacity: 0.7;
    font-size: 13px;
}

.creator {
    font-size: 13px;
    opacity: 0.9;
}