/* =================================================
   GIAO DIỆN CHAT CHO USER (user.css)
================================================= */

.vip-message-list::-webkit-scrollbar { width: 6px; }
.vip-message-list::-webkit-scrollbar-track { background: transparent; }
.vip-message-list::-webkit-scrollbar-thumb { background-color: #cbd5e1; border-radius: 10px; }

.modern-chat-wrapper {
    display: flex;
    flex-direction: column;
    height: 500px;
    background: #f8fafc;
    border-radius: 12px;
    border: 1px solid #e2e8f0;
    overflow: hidden;
}

.vip-message-list {
    flex: 1;
    padding: 20px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

/* --- FORM & NÚT GỬI CỰC ĐẸP --- */
.vip-message-form {
    display: flex;
    align-items: flex-end;
    gap: 12px;
    padding: 15px;
    background: #ffffff;
    border-top: 1px solid #e2e8f0;
}

.vip-message-form textarea {
    flex: 1;
    min-height: 46px;
    max-height: 100px;
    padding: 12px 18px;
    border-radius: 24px;
    border: 1px solid #cbd5e1;
    background: #f1f5f9;
    font-size: 15px;
    resize: none;
    outline: none;
    transition: all 0.3s ease;
    line-height: 1.4;
}

/* --- FORM & NÚT GỬI (Dùng CSS Mask chống mất icon) --- */
.vip-message-form button {
    width: 46px;
    height: 46px;
    border-radius: 50%;
    background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    flex-shrink: 0;
    box-shadow: 0 4px 10px rgba(59, 130, 246, 0.3);
}

/* Vẽ icon máy bay bằng CSS */
.vip-message-form button::after {
    content: "";
    display: block;
    width: 20px;
    height: 20px;
    background-color: #ffffff; /* Màu trắng của icon */
    -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M2.01 21L23 12 2.01 3 2 10l15 2-15 2z'/%3E%3C/svg%3E") center/contain no-repeat;
    mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M2.01 21L23 12 2.01 3 2 10l15 2-15 2z'/%3E%3C/svg%3E") center/contain no-repeat;
    margin-left: 3px;
    margin-top: 1px;
}

.vip-message-form button:hover {
    transform: translateY(-2px) scale(1.05);
    box-shadow: 0 6px 15px rgba(59, 130, 246, 0.4);
}

.vip-message-form button:active {
    transform: translateY(0) scale(0.95);
}

.vip-message-form button svg {
    display: block !important;
    width: 20px !important;
    height: 20px !important;
    fill: #ffffff !important;
    margin-left: 3px; /* Căn chỉnh quang học cho máy bay giấy */
}

.vip-message-form button:hover {
    transform: translateY(-2px) scale(1.05);
    box-shadow: 0 6px 15px rgba(59, 130, 246, 0.4);
}

.vip-message-form button:active {
    transform: translateY(0) scale(0.95);
}

/* --- BONG BÓNG TIN NHẮN --- */
.vip-message-item {
    max-width: 75%;
    display: flex;
    flex-direction: column;
}

.vip-message-item .msg-content {
    padding: 12px 16px;
    border-radius: 18px;
    font-size: 15px;
    line-height: 1.5;
    word-break: break-word;
}

.vip-message-item.me { align-self: flex-end; }
.vip-message-item.me .msg-content { background: #3b82f6; color: #ffffff; border-bottom-right-radius: 4px; }

.vip-message-item.other { align-self: flex-start; }
.vip-message-item.other .msg-content { background: #ffffff; color: #1e293b; border: 1px solid #e2e8f0; border-bottom-left-radius: 4px; box-shadow: 0 2px 5px rgba(0,0,0,0.02); }

.msg-meta {
    font-size: 11px;
    color: #94a3b8;
    margin-top: 5px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.vip-message-item.me .msg-meta {
    align-self: flex-end;
    flex-direction: row-reverse;
}