/* ================= NÚT MỞ CHAT ================= */
.chat-mini-btn {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 65px;
    height: 65px;
    border-radius: 50%;
    background: linear-gradient(145deg,#f9f6ff,#e0d9ff);
    border: 2px solid #bda9ff;
    color: #7a4fff;
    font-size: 28px;
    box-shadow: 0 8px 18px rgba(122,79,255,0.3);
    cursor: pointer;
    transition: all 0.3s ease;
    animation: pulseGlow 2s infinite ease-in-out;
    z-index: 99998 !important;
}

    .chat-mini-btn:hover {
        transform: scale(1.15) rotate(8deg);
        box-shadow: 0 12px 25px rgba(122,79,255,0.4);
    }

@keyframes pulseGlow {
    0% {
        box-shadow: 0 0 8px rgba(122,79,255,0.4);
    }

    50% {
        box-shadow: 0 0 18px rgba(122,79,255,0.7);
    }

    100% {
        box-shadow: 0 0 8px rgba(122,79,255,0.4);
    }
}

/* ================= CONTAINER CHAT ================= */
.bongbong-chat-container {
    position: fixed;
    bottom: 90px;
    right: 20px;
    width: 340px;
    height: 480px;
    background: #fff;
    border-radius: 22px;
    border: 2px solid #d1c8ff;
    box-shadow: 0 12px 35px rgba(0,0,0,0.15),inset 0 0 18px rgba(190,180,255,0.4);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    animation: popUp 0.4s ease-out forwards;
    z-index: 99999 !important;
}

@keyframes popUp {
    0% {
        transform: scale(0.6) translateY(40px);
        opacity: 0;
    }

    60% {
        transform: scale(1.05);
        opacity: 1;
    }

    100% {
        transform: scale(1);
    }
}

/* HEADER CHAT */
.chat-header {
    background: linear-gradient(135deg,#b298ff,#d4c5ff);
    padding: 15px;
    font-size: 16px;
    font-weight: 600;
    color: #fff;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 2px solid #c9b8ff;
    text-shadow: 0 1px 3px rgba(0,0,0,0.2);
}

    /* NÚT ĐÓNG CHAT - CHỈNH LẠI ĐẸP MẮT */
    .chat-header button {
        background: #e0d9ff; /* đỏ nhẹ nổi bật */
        border: none;
        width: 28px;
        height: 28px;
        border-radius: 50%;
        font-size: 18px;
        color: #fff;
        cursor: pointer;
        display: flex;
        align-items: center;
        justify-content: center;
        transition: all 0.3s ease, transform 0.3s ease;
        box-shadow: 0 3px 6px rgba(0,0,0,0.2), inset 0 1px 2px rgba(255,255,255,0.3);
    }

        .chat-header button:hover {
            background: #e0d9ff; /* đỏ đậm khi hover */
            transform: scale(1.2) rotate(90deg) translateZ(2px);
            box-shadow: 0 6px 12px rgba(0,0,0,0.3), inset 0 1px 2px rgba(255,255,255,0.4);
        }

/* CHAT BOX */
.chat-box {
    flex: 1;
    padding: 15px;
    overflow-y: auto;
    background: #faf7ff;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

    .chat-box::-webkit-scrollbar {
        width: 6px;
    }

    .chat-box::-webkit-scrollbar-thumb {
        background: #4a2df9;
        border-radius: 20px;
    }

/* BONG BÓNG TIN NHẮN */
.chat-message {
    padding: 10px 14px;
    border-radius: 16px;
    max-width: 80%;
    font-size: 14px;
    line-height: 1.4;
    animation: bubblePop 0.25s ease-out;
    word-wrap: break-word;
    white-space: pre-line;
}

@keyframes bubblePop {
    0% {
        transform: scale(0.6);
        opacity: 0;
    }

    80% {
        transform: scale(1.05);
    }

    100% {
        transform: scale(1);
        opacity: 1;
    }
}

.user-message {
    align-self: flex-end;
    background: #a3f7ff;
    border: 1px solid #66e0ff;
    color: #004d66;
    box-shadow: 0 3px 10px rgba(0,180,255,0.3);
    font-family: "Comic Sans MS",cursive,sans-serif;
}

.ai-message {
    align-self: flex-start;
    background: #fff08f;
    border: 1px solid #ffea3d;
    color: #664d00;
    box-shadow: 0 3px 10px rgba(255,215,0,0.4);
    font-family: "Comic Sans MS",cursive,sans-serif;
}

    .ai-message img, .user-message img {
        max-width: 100%;
        border-radius: 12px;
        margin-top: 6px;
        box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    }

/* TYPING AI 3 CHẤM XANH */
.ai-typing span {
    display: inline-block;
    width: 6px;
    height: 6px;
    margin: 0 2px;
    background-color: #1a0dab;
    border-radius: 50%;
    animation: bounce 0.6s infinite alternate;
}

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

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

@keyframes bounce {
    to {
        transform: translateY(-4px);
    }
}

/* FORM GỬI TIN NHẮN 1 HÀNG */
.chat-form {
    display: flex;
    flex-direction: column;
    gap: 4px;
    background: #fff;
    padding: 8px 10px;
    border-top: 2px solid #e3d8ff;
}

.input-row {
    display: flex;
    align-items: center;
    gap: 6px;
}

.chat-form textarea {
    flex: 1;
    resize: none;
    border: 1px solid #cfc2ff;
    border-radius: 12px;
    padding: 8px 10px;
    font-size: 14px;
    background: #faf8ff;
    transition: 0.2s;
    height: 36px;
}

    .chat-form textarea:focus {
        border-color: #9c86ff;
        box-shadow: 0 0 5px rgba(156,134,255,0.4);
    }

.chat-form button[type="submit"] {
    background: #b09bff;
    border: none;
    padding: 8px 12px;
    border-radius: 50%;
    color: #fff;
    font-size: 16px;
    cursor: pointer;
    box-shadow: 0 3px 10px rgba(160,135,255,0.4);
    transition: 0.2s;
}

.chat-form button:hover {
    transform: scale(1.2) rotate(8deg);
}

.file-label {
    font-size: 18px;
    cursor: pointer;
    color: #937cff;
    transition: 0.2s;
}

    .file-label:hover {
        transform: scale(1.2);
    }

/* FILE PREVIEW NẰM TRÊN TEXTAREA */
.file-preview-mini {
    display: flex;
    gap: 6px;
    max-height: 50px;
    overflow-x: auto;
}

.preview-item {
    display: flex;
    align-items: center;
    gap: 4px;
    background: #f5f5f5;
    border: 1px solid #d0c9ff;
    padding: 2px 6px;
    border-radius: 12px;
    max-width: 120px;
    overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis;
    font-size: 12px;
    position: relative;
}

    .preview-item img {
        width: 30px;
        height: 30px;
        object-fit: cover;
        border-radius: 6px;
        flex-shrink: 0;
    }

.file-name {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
}

.remove-file {
    flex-shrink: 0;
    background: #ff4d4f;
    color: white;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    font-size: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
}

    .remove-file:hover {
        transform: scale(1.2);
    }

/* LỜI CHÀO MINI */
.chat-greeting {
    position: fixed;
    bottom: 100px;
    right: 25px;
    background: #ffd6f7;
    color: #5a1aff;
    padding: 10px 16px;
    border-radius: 18px;
    font-size: 14px;
    font-weight: 600;
    font-family: "Comic Sans MS",cursive,sans-serif;
    box-shadow: 0 5px 15px rgba(90,26,255,0.3);
    opacity: 0;
    transform: translateY(20px);
    z-index: 99997;
    pointer-events: none;
}

    .chat-greeting .greeting-text {
        display: inline-block;
        position: relative;
        overflow: visible;
    }

.greeting-effect {
    position: absolute;
    bottom: 0;
    left: 50%;
    pointer-events: none;
    opacity: 0.9;
    animation: floatUp 2s linear forwards, glowBounce 1.5s infinite alternate;
}

    .greeting-effect.heart {
        color: #ff4d6d;
        font-size: 12px;
    }

    .greeting-effect.star {
        color: #ffd700;
        font-size: 14px;
    }

    .greeting-effect.bubble {
        background: rgba(180,120,255,0.5);
        width: 12px;
        height: 12px;
        border-radius: 50%;
    }

@keyframes floatUp {
    0% {
        transform: translate(-50%,0) scale(1) rotate(0deg);
        opacity: 1;
    }

    50% {
        transform: translate(-50%,-60px) scale(1.2) rotate(180deg);
        opacity: 0.8;
    }

    100% {
        transform: translate(-50%,-120px) scale(0.8) rotate(360deg);
        opacity: 0;
    }
}

@keyframes glowBounce {
    0%,100% {
        transform: scale(1);
        filter: drop-shadow(0 0 3px rgba(255,255,255,0.6));
    }

    50% {
        transform: scale(1.3);
        filter: drop-shadow(0 0 8px rgba(255,255,255,1));
    }
}