.trang-dang-nhap {
    display: grid;
    place-items: center;
    padding: 24px;
    background: radial-gradient(circle at top left, #eaf2ff 0, transparent 40%), var(--nen);
}
.khung-dang-nhap { width: min(430px, 100%); }
.the-dang-nhap {
    background: #fff;
    border: 1px solid var(--vien);
    border-radius: 18px;
    box-shadow: var(--bong);
    padding: 30px;
}
.thuong-hieu { display: flex; gap: 13px; align-items: center; margin-bottom: 26px; }
.logo-chu { width: 46px; height: 46px; border-radius: 13px; font-size: 20px; }
.thuong-hieu h1 { margin: 0; font-size: 21px; }
.thuong-hieu p { margin: 4px 0 0; color: var(--chu-phu); font-size: 14px; }
.o-mat-khau { position: relative; }
.o-mat-khau input { padding-right: 68px; }
.nut-hien-mat-khau {
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    border: 0;
    background: transparent;
    color: var(--chinh);
    cursor: pointer;
    font-weight: 700;
    font-size: 13px;
}


/* THEME V1 - Dang nhap */
.trang-dang-nhap {
    background:
        radial-gradient(circle at top left, rgba(67,160,71,.12) 0, transparent 40%),
        radial-gradient(circle at bottom right, rgba(255,102,0,.10) 0, transparent 36%),
        #f8fafd;
}
.the-dang-nhap {
    border: 0;
    border-radius: 12px;
    box-shadow: 0 3px 15px rgba(0,0,0,.15);
}
.logo-chu {
    background: linear-gradient(90deg,#ff0000,#ff7f00);
    color: #fff;
    border-radius: 10px;
}
.thuong-hieu h1 { color: #025a2a; }
.nut-hien-mat-khau { color: #025a2a; }